@@stubbycuts I do the same, but is just a bad habit for me I guess. now what I would really love to lear is how to get a good geometry for a sport tpuring neo cafe bike any advice ? any videos you have made about it? I would highly appreciate your help best regards
I am a 58 year old welder skills like this are on there way out . And yes welding is an art form. You constantly strive for perfection. Brazing is one of the many skills that is hard to perfect. This man has done that . RESPECT
When I left school one of my first jobs was bronze welding motorcycle frames, clip on's, rear sets and headlight brackets for a company called John Tickle racing equipment. I used to do it on piece work rates and earned good money. The job satisfaction at the end of each day was great. (Year was 1969)
I don't think I want to ride on that motorcycle. The braise all those joints it's can't be as strong as regular welding can it? I'm not a welder I am a machinist who was a cop so I don't have as much experience in the shop especially with welding I'm an idiot when it comes to that. This wouldn't be a strong as regular welds would it?
@@brt-jn7kg well, I will love to see what people with more experience have to tell. I have the same thoughts but than I see bikes and motor bikes done like that, and they must be resistant!
@@brt-jn7kg In general they are, the key here is having to deal with less distortion. You also don't get to worry about corrosion. You have to realize the materials are not molten here but the filler is. Either way a good weld or braze is often stronger than the base material. When it comes to precision fit it makes sense to braze. The type of filler is important depending on the application. The cool thing is you can braze dissimilar metals as long as they are "brazable" for example you could have a solid carbide part brazed onto that frame, you could have a stainless steel portion and not have to worry about contaminating it (where it would eventually rust if welded to common steel, specially without ss wire/rod). And probably a bunch of other pros and cons I can't recall right now!
Many, many years ago when I made bicycle frames at Dawes producing joints like this was the test to get the job but once you were on the production line they expected you to produce smooth joints which did not require finishing. The surface tension of the molten brass helps and holds the material in place. Also if you cut through such a joint you will see that there is a secondary smaller fillet on the inside of the tube creating a stronger joint.
"Also if you cut through such a joint you will see that there is a secondary smaller fillet on the inside of the tube creating a stronger joint." A fact that few are aware of. Well fitting and properly preped brazed joints are stronger, more resilient, and less prone to cracking than a TIG weld in general.
My company made race car, experimental aircraft and motorcycle frames out of mild steel [50k psi] to alloy steel [90k psi]. We used Eutectic Brand 1/16'' high silver content brass rod that made a tiny fillet...in and out. However, the joint fit had to be no more than 0.010'' to 0.015'' gap. We used a mill to make the cut to fit the tubes. The brazed joint was stronger than the steel in most cases. The special rod cost 5-6 times normal brass rod, but this was cheaper an stronger as you needed much less gas and rod with less cleanup grinding.
@@lifuranph.d.9440 Why would you make those things out of mild steel and braze them? If you're brazing anyway you might as well use better, stronger steel like Reynolds 531. There was zero grinding at Dawes, we used standard brass filler rods. The silver solder was only used for pump pegs, lugged 753 frames and such like but that had nearly no surface tension and you needed to be really careful and quick to avoid a horrible mess.
When I went to school for welding 20 years ago we did this. I hated it so much at the time for my test I just jammed the rod in the joint handed it in and took the 0. Now how ever this is one of my favorite processes. You are an artist and your work is amazing. good on you sir!
I had never heard of in line gas fluxing, you learn summat every day. I loved doing bronze brazing, It was always stronger than my crappy welding and it's so quiet and lacking in drama. And once painted it makes you look like the neatest welder in the world.
I wouldnt paint it, id give it a few coats of clear lacquer. Have worked for 20years now since leaving school as a pipe welder in the oil and gas industry, and that what he's done in this video os some real top drawer stuff!!
I used to work in a factory that makes fuel filler necks for the fuel tanks for school buses and I was a braze welder for that. Every piece had to be leak tested by pressurizing and submerging in water tank. No bubbles meant good weld. I welded on average 40 filler assemblies an hour. I had done mig and stick prior to working there but never bronze braze with a torch. Small learning curve to get the hang of it but well worth the experience. Now I use it occasionally in my home shop for hobby work. I must say though, my welds were definitely not on par with yours. Beautiful work!
Chrome-moly tube & brazing = how light aircraft frames have been built for at least 1 century. The joints are extremely crack resistant where welding wouldn't be.
Yeah but.... there's always a but(t) - materials science & welding technology have moved so far on that brazing is really not required any more, and unfortunately is becoming a dying art. Selecting modern steels & TIG welding can yield much stronger, lighter and yes crack resistant structures. TIG welding properly also inputs less overall heat into the joint reducing the risk of distortion. Brazing still looks bloody lovely though!
@@sakisdalakos6144 no I don’t care what these other guys say it may have been a technique back in the day nothing holds like the use of a tig with filler metal that matches your product. Yes you can mig or tig a roll cage just make sure to bevel your edges to get proper full penetration.
The FAA in the USA forbids brazing aircraft frames. It is not approved due to the sudden and catastrophic failure of these joints. I examined a wreck many years ago that was brazed and saw evidence of brittle failure. The Pietenpol brothers petitioned the FAA for approval and after much testing, they were denied. Adhesion joints are not approved anywhere on the airplane. Look at your SN diagrams.
This guy is so skilled,he’s controlling precise heating on 3 components at once ,utilizing perfect timing,coordination,the results look very similar to tig welding aluminum,bravo!
Excellent technique, I have a 1979 Rickman Honda with bronze brazed frame. It has done many hard miles and the frame is as good as the day it was made. Reynolds 530 tubes. I enjoyed the video very much, thank you.
What a stunning piece of artwork! Even if the bike was never to be raced around a track and just kept as a piece of static art it would still be breathtaking, no wonder you need to remind yourself to breathe!
A lot of patience to do this but the result is beautiful and professional. People are always ripping me about using a MIG, saying it's not good enough. I'm going to point them in your direction from now on. That looks so good I'd put a clear finish on it LOL
There's no reason why proper mig isn't good enough for an application like this. Youre just a victim of the know-it-all youtube comment section. The vast majority of those making those comments have never used any welding processes in their lives. I promise you that.
It works on stainless and mild steel. For Chrome molly is may produce cracks . Bicycle frames were done like this for decades as well as aircraft. Low temp, self normalizing , Easy to do ,it really has many advantages. Mainly no special tools or machines.
My dad was a fabricator ,millwright, very nice explanation procedure and video.. I learnt The Craft on old school bicycles. Go karts,mini bikes. But yeah this was in 1972 and it was basically the same,.. I was brazing whatever the bikes are made out of iron in 1972 ..9 years old. 🤑🤑🤑
What can I say? What a beautiful job! A real work of art! Up until 2013 MV Agusta TIG-welded their frames and after painting they looked great. Then they switched to MIG welding and now look like rubbish. Too bad they couldn’t continue with TIG or the more time-consuming brazing.
Rickman Brothers built motorcycle frames in the Uk in the 60’s with a technique that must have been similar to this. This is a lost art that you have mastered to the highest level!
Thank you sir, I know Don & Derek from my early days making Metisse/rickman frames (2009-2014) where I got the opportunity to meet some old boys and learn from there methods.. Some of the older frames made by “Pat French” for example where some of the best in my eyes :)
Rickman, Next to know one I know to day even bike rides have heard of Rickman, I had the privilege to have a tour around there workshops and that is how I discovered the gas fluxer and it was all explained to me. The reason I went to Rickman’s was because Reynolds’s were out of 11/8” hardened and tempted 531tubing and they were willing to supply me, They were also building 6 bikes for a Japanese bike company but they wouldn’t say which one, if I was a bike Guy I would have known by the engine because they were all built up, without paint or decals. Great Video 🍺🇯🇪🏁
I have a 1970 Rickman 650 triumph. The welds are great, but the tubing finish was rough when they plated it. Doesn’t look as good as early frames I think.
Now that is art! Never really understood the pretentious nature of splattering paint on canvas, that doesn't really do anything! This, just by looking at it evokes emotions. I think no one who has watched this video will say otherwise! Simply amazing! Sir, I am getting into bespoke bike making, rather unconventional bikes, one is a semi prone position and the other is fully covered recumbent, and the last one is a bit conventional but a do it all bike designed to take you anywhere, with just wheel changes. I'd love to have a chat with you about this, if you like the sound of it. I'm a designer and would love those bikes to be a work of art as well.
Love the look of this, I have been watching Paul Brodie do a lot of brazing of bike frames. If I welded like this I would leave the frame raw and just clear coat it.
Excellent quality bronze welding and demonstration. Is an oxidizing flame preferred with bronze welding or can a neutral flame be considered acceptable? I have a jet fluxer and will begin to practice on scraps to get the hang of the technique using Sifbronze 101 - which I have a small bundle of. I'm using 18 gauge mild steel pieces, no.2 tip and 3/32" rod. I use emery to clean the m.s. and then MEK to clean it up in preparation for bronze welding. I'm not expecting to get anywhere near the quality and appearance of your welds, but I'm doing it safely, and taking my time after taking a welding course at my local tech.. Any further advice is greatly appreciated. Have also viewed the gas flux bronze welding of Brian at Arch Motors working on an Ariel Atom frame. British motor racing companies preferred the use of bronze welding using a jet fluxer, and Lotus, Lola, Reynard and many more use(d) it for space frames as opposed to Mig/Tig due to less distortion. Thanks for a very interesting video. A+
Ed Wills wow, if you have experienced Brian Ashcroft on the job, you have seen the master at work.. it sounds like you got all the right stuff to have a go and get practising. All the items you describe sound perfect to start melting some bronze onto steel and just get to grips with how it moves with the heat. It’s really simply after the basic principles of the liquid bronze under heat are understood. Good luck my friend!
That, is a piece of art! Have worked as a coded pipe welder for the 20yrs since leaving school, started off at college with oxy acetylene before going into other techniques and processes. Only ever tried Tig Brazing and that was only a few times with silicon bronze. Oxy acet brazing that is one id love to say i can do anywhere near as well as in this video👌👌👌
Beautiful work, I learnt to mig and gas weld as a panel beater in the 80/90s and always preferred gas. It looks so much better and you have so much more control over the end result and the materials used. What a shame that frame is hidden behind plastic/carbon. Keep up the great work.
I am an old bicycle road racer. Bicycle frames with steel tubing (very thin and butted) were either joined with lugs....fixtures that were made and the individual tubes were inserted into them and that were brazed or if the builder was really good and when using the thinnest highest strength tubes or very difficult joint transistions they would use lugless brazing. I have a racing tandem bicycle that was built with lugless method for me by the legendary Bernie Mikkelson in California back in the 70s. The joints have perfectly smooth transitions. Besides less stress a lugless brazed joint also has a bit of a fillet on the inside of the tubes so increased strength benefit. Modern TIG welding and computer welding machines can lay a flawless weld every time but those old artist frame builders created wonderful lug or lugless works of art by hand that I marvel at the skill they had. A side benefit is if a crash happens and a tube is damaged.....it can easily be restored by removing the bad tubes and brazing in the new tubes. That is a very difficult process with a luged frame.
You make this look so easy and Looks Absolutely Amazing!!! I went to school for Welding and blueprints in 1997, When we were learning to braze, All the Popping and Slag flying like Sparks everywhere, I don’t think I’ve ever laughed that had in my life!!!! Great video
Been welding for about 17 years with more common process, i mist say, torch brazing is one string missing to my arc that i would love to add. Great video!
ofc it's not as strong, but just like welding the joint here is stronger than the base material, and you can't join dissimilar metals with welding, so brazing is the only choice, the heat also peaks at a much lower temp.
@@jsullivan05 I join dissimilar metals everyday with welding not sure where you get your info I am a 25+ year xray pipewelder and the filler metal in the video isnt stringer than the base material I am sure the base metal was either chromoly or mild carbon steel so do your research I weld stainless to carbon and inconell to carbon and hastaloy to carbon steel wich are all dissimilar metals
@@chrislindsey3523 I'm having a hard time believing you have 25+ years experience if you think those brazes are weaker than the tube itself, he literally has another video showing him testing to failure and the tube fails LONG before the join. 2. Dissimilar metals can be welded yes, but WAY more often than not they can't, the welds crack, and for those that do work you need all kinds of fun back purging rigs and what not. You make it seem like welding those tubes together is even an option over brazing, it's not, as soon as you put an electrode near it you'll blow right thru that tube, brazing is the only way to join them by hand.
@@jsullivan05 I guess that's why when I make a xray weld on dissimilar metals in a refinery or Petro chemical plant or nuclear power plant they always tell me to braze it not to weld it you can believe what you want I know the truth maybe all the welding engineers should get with you next time they do a shutdown to see if we need to braze or weld🤣🤣
Its That your Chair Creaking or the Frame? Every Time I hear a Creak, Ting, Tick or Crack I know that there is a Stress Point Forming in the Joints across the whole system. Work Heat the Entire frame then Fusion Tack all the Joints, Then One should Go about the Fine Brazing procedures you are doing. I'm not telling you what to do, I'm coming from lotus Race team experience as a TIG Welder and I would like to take up Old Skool Brazing to make Bicycles in as my Hobby. In the moment I am here to learn from your Beautiful Work. I have not attempted to Braze since Jr. school.
This is a wonderful display of skill . The final result looks amazing . I understand that this technique is not always cost effective in day to day engineering but in the workshop where I work I thinks it’s ignorance; they don’t understand the advantages.
at 6:00 that was a super sweet step to use the filler rod & torch together to target heat induction around the joint . . . . interesting jig you have built. would be nice to have a quick 'walk-a-round' of the tool that impresses as a well thought out kit.
In my apprentice program i took a welding class at a local college , turned out i was older then the instructor. He did not know how to braze, so i thought the class and got and a out of it. This type of welding is beyond my skills but love the way it looks. GREAT SKILL.
Am I the only person who dislikes this guy and his work🙄🙄🙄It is unfair to people like me trying and this dude comes along holds his breath for 10min and brazes a bike frame that looks like it is held by Gold😁😁😁😁Great work ✌🏼✌🏼✌🏼✌🏼
I learned to weld with a coat hanger and cutting torch in 1980 maybe, older guy taught me and learned bronze weld shortly after however never quite this good at it and didnt need that skill much. Takes me back to my early years.
For Welding most metals TIG is my go to for Welding. But saying that Brazing definitely has it's place. Great for Welding dissimilar metals like Non Ferrous to Ferrous metals. The plus of using Brazing over TIG as shown in this video is the COOL factor too, LOL. Brazing does have that appeal ( IF done correctly ???? ) One other argumentative plus of Brazing vs TIG. Brazing is usually a slightly cooler / colder welding process. Where the base metal is Welded at a lower temperature ( of course this depends on the experience of the person doing the process ???? ) Regardless of which process is best. Definitely enjoyed watching something different here on RUclips. Thanks for posting this video. Peter.
Wow! Beautiful work, it looks amazing. I had no idea that bronze brazing had such strength. I have so much to learn when it comes to welding, brazing and fabrication. Nice job and thanks for showing us how it's done!
Absolute craftsmanship and I can appreciate the nostalgia but I could tig it with silicon bronze in about a third of the time with a lot less heat induced stress
Not to mention the Reynard, Van Dieman, Ray, Quest etc. etc. etc. Formula Fords and other small bore tube frame racing cars made in the UK over the years. Certainly very strong, mine survived my off track excursions! Well done, many thanks for posting this!
Watching things like this show cases real skills, most people learn away from brazing but i personally find it satisfying kind of like making a knife by hand you have to practice and learn your metals etc..
When you wrote that the health hazards are much less than with TIG did you mean due to the Thorium and Tungsten and the high-frequency electromagnetic fields and Ultraviolet and Infrared exposure with TIG compared to just some particulates and possibly a little phosphine or arsenic in the acetylene welding gas?
@@goodbyemr.anderson5065 really? Ha ha! Well, nobody's hurt here...and I wasn't proven wrong. There is no UV light from that brazing flame...the guy is talented with his task. You don't need to get upset if someone else calls out a wrong. Ridiculous!
Brazing can withstand vibrations much better as a normal steel weld,this is why good motorcycle frames were braze welded.Nowadays we have no more time and all is welded with steel....nice job👍
Hope I don't sound dumb for asking but is he welding bronze on cold rolled steel or aluminum never seen this done before I only weld stick or mig with argon of course amateurly
@@eyyymanuel He is joining chrome moly (eg 4340, 4140) steel. Bronze (or silver-based) brazing alloys can be used to join most metals provided they melt at a higher temperature than the brazing alloy. Aluminium would not qualify, but there are low temperature brazing (it would border on soldering, which is a lower temperature process than brazing; I think the terminological cutoff is about 450 deg C) Brazing does not melt the parent metal, so it's not a welding process. The brazing alloy forms a strong intermetallic compound (an alloy of bronze and steel, in this case) at the interface, so it's more than just an adhesive. Bronze is also very tough (good impact strength): depending on the exact alloy it can be tougher than steel, if it includes nickel and aluminium, particularly.
Damn, that’s amazing!! I’m now inspired to try this. The rate of travel is higher than I thought it would be (the pool solidifies quicker than I imagined). Obviously prep is key like with tig too, your fitup is super crisp.
I used to do this kind of work, making frames at Zip Karts. The inline fluxers are great for production work as there is no need to paint flux onto the joint- it is already supplied directly through the flame.
I wish you would have done part of this with a lens on the camera so that we could have seen the placement of the rod and the puddle. I had to do a small piece once for a aircraft class and it took me several tries to get one piece that would pass! Thanks for the video. What is a in line gas fluxer?
There are special lenses for this kind of thing, "Didymium glass", goggles, filter plates, clip-ons. Glassblowers use this also, it cuts out the yellow sodium flare so you can see. NO IDEA how this deals with all the green light from the flux! Gas Fluxer is a commercial product. It's a chunky little pressure-vessel filled with flux, your fuel gas bubbles through it and carries a little along to the flame. Super rugged but of course a little expensive. I once saw one in production, people were silver-soldering all day long, the green flame was really striking. They loved the Gas Flux action and were really positive about it. This was for constant daily use. I want one, but only braze and silver-solder occasionally, so a little regular flux is good enough. Here's a trick I got from an old BOOK: If you heat your brazing rod and put it in some flux (maybe lengthwise, in a little trough)... then gently heat this wire with your torch you can fuse that flux and make it run down the wire in a clear glassy form. So all that bubbling action is done, right? Now your brazing rod has a few inches of a clear flux coating on it, it doesn't make all that mess and confusion when it gets on the work! Just spreads out a little. This is for small delicate work. For something big you can just slather it on there with a brush!
Im not sure but i think normal welding is stronger than brazing because when welding normally you fuse the metals together to one piece and when brazing you are like adding a glue between the parts. they are together but they arent fused. sorry for bad english and correct me if im wrong
For thin wall alloy tubing there is probably no difference in strength between braze or welding as in a destructive test geometry comes in to play so it is always the tube that fails or collapses. Not the filler material. The advantage of brazing for this application is that its lower temperature than welding so there is less distortion and less chance of locking in stress so less chance of fatigue cracking over time in use.
on alloy steel, there is no nitrogen embrittlement that needs stress relieving with brazing, there is a choice of brazing material that exceeds most steels.
Awesome video! I hate filming myself for the same reason... the voice lol. Don't worry though, everyone's voice sounds bad to themselves. You're voice is not offputting. Keep up the good work!
I have raced formula cars (Lotus, Chevron, Brabham and currently a VanDiemen) all made in England. Every one of them was done like this. Never had one problem. This is high art and takes practice. Tig welding, although it takes some practice, is much easier. Another advantage is that you can remove parts brazed on which makes repair much easier. I flipped my car some years ago and had to replace the roll bar. Just melted the brazing and off it came. Re-brazed the new one on. Beautiful work!!
Great to hear this from your experiences racing.. it’s amazing how this process is not that old yet completely forgotten about in the modern world of fabrication. Thanks for your input! Cheers
As an American viewer, Your voice, accent, pronunciation and cadence are perfectly pleasing to listen to. Your speaking lends a knowledgeable flair and gravitas. Now...where can I get the flux core silicon bronze brazing rod. Flux coated is messy. Thanks !
Thank you sir! Very kind, oh good question, not something I’m familiar with, only the flux coated rods I’ve seen from my supplier.. good luck my friend!
Hey there! Nice video. I was trying hard to see the actual melted bronze fall onto the frame but too bright. Any filter for the camera make it so the viewer can see what's occurring?
Hello my master, is it necessary that the wire we use for welding oxygen-propane and stainless steels with brass must be 'cored brass welding wire' sold for tig-brass welding? Or can we also weld with pure brass wires? (provided to use flux, flux etc.).
One advantage is being able to get into very tight spaces. There are lots of arguments out there over the strength of this type of joining but one argument FOR it is that the HAZ is much less than for tig welding. This is a lower temperature. For heat treated Chromoly...there is nothing better.
@@Golgi-Gyges TIG Brazing is tricky because the arc is so intense that it's difficult not to bring the parent metal close to liquification, which diminishes the performance of the joint and cannot be detected after the joint is made (and sometimes is not even obvious to the person making the joint)
@@Gottenhimfella Wrong. Any good welder knows how to control the heat. And that is easier with TIG. All nonsense you wrote there. There is quite a melting point difference in the base metal and the bronze rod.
Those are beautiful joints! How do you tack the tubes before brazing? Do you put a little tig weld tack on them? I'd really like to try this process on bicycle frames.
Sometimes a bridge tack could work when small adjustments need to be made. The small wire bridge can be bent instead of breaking or grinding a tack out. Then grind it off when the weld is done
The correct terminology is "bronze welding" In bronze welding a fillet of bronze is created which adds structural strength to the joint as well as sticking the surfaces together . In brazing there is no fillet ,the bronze filler is restricted to the jointed surfaces and is drawn in by capillary action .The bronze merely acting to hold the joint together as a adhesive would ,but adding no structural strength to the joint.
@@Iblis666ful The low heat input results in less changes in the base metal. I don't know if it is still the case,but tubular space frames for aircraft were always braze welded because the strength of the tubing was not compromised.
@@shhhdontshout It's all about the HAZ (heat affected zone) en.wikipedia.org/wiki/Heat-affected_zone Brazing and TIG put less heat into the base metal so the HAZ is smaller
Some steel alloys like the Reynolds 531 are practically unweldable, sometimes because of their composition, sometimes because of a heat treatment. Also when using a very thin walled tubing, or a mix of different steel alloys. A braze welding, a kind of super gluing with a bronze is preferred in these cases. Another advantage brazing does not introduce HAZ steel hardening, nor welding internal stresses (which sometimes need an heat treatment to relieve those stresses).
What I've read, but no experience, the torch process (weld or braze) allows the chrome tubing to retain strength without a heat treat cycle after it is finished. I've read the wire feed welding can be weaker on this tubing because of the extra heat input, some racing organizations used to require heat treat if the roll cage was wire welded, but TIG was considered OK and torch weld was also OK. As far as braze vs tig weld, I'm not sure which is why I landed on this question. Good bronze braze has a strength up need decent weld and certainly puts less heat in the joint. So I'm guessing a combination of factors for this specific why A over B process. And again, only stuff I've read.
@@minigpracing3068 The chrome molybdenum tubing hates violent welding, the R 531 loses strength if heated above certain temperature. I've used bronze welding on competition 50 cc motorcycles frames because we were using 0.8 mm walls Reynolds 531 tubing. When using weldable steel alloys at decent thickness bronze welding is of little interest. You have also other tricks like using stainless steel 312 sticks for welding very different steel alloys or when you want to minimize distortion.
@@pabloricardodetarragon2649 wow, thanks a million for that explanation. Makes total sense now but I was really confused before reading what you wrote.
@@stubbycuts I've never saw that process for bike frame. I'm just wondering how strong it comparing to steel soldering. Do you use some particular bronze allow to keep the joint not too brittle ?
@@UPR91 Silver alloys are usually used for bicycles, bronze for motorbikes. (Probably for cost reasons. Bronze is not as easy to get a good tidy result, but the filler metal is much more affordable and slightly stronger)
Absolutely stunning, this shows that with patience and a steady hand, anything can be achieved... well almost anything... Now if someone could just post a video of how to please a woman, or at least how to braze their mouth shut, then I could say with complete confidence, that anything is possible!!
@@goodbyemr.anderson5065 lol I have heard the first part before, but the polishing the pear is new to me.. just shows you learn something new every day!
I had a read of your Description I had a giggle at your preemptive strike against the it isn't strong enough crowd I didn't know about inline gas fluxes I'll now have something to google this evening thank you
A very beautiful job, I'm hoping ican bring my own work up to this standard. A couple of points... This is called bronze welding when fillets of bronze which chemically combines with the surface of the parent metal. Very much in the way soldering works. Brazing is technically when the bronze rod is flowed by capillary action into a joint as in a tube and lug frame of old. I was told off by an old timer for mixing up the terms bronze welding and brazing. Just as a note, in bronze welding the parent metals are not melted together which makes the term a little misleading. I'm interested in the in line fluxer as I've been using fluxed rods and would like to try a different fluxing method.
Thanks you, it’s only time with the torch, Good luck! Haha, yes I’ve got in trouble before with old timers and so on with definitions. Something just won’t let me call it welding as it doesn’t makes sense! Metallic adhesion maybe? 😂 And in line fluxer is the best investment you can make when doing this process, I highly recommend it 👍🏼 cheers
![Noob To Max With DRAGON REWORK In Blox Fruits [FULL MOVIE]](http://i.ytimg.com/vi/LnBMOinoOvA/mqdefault.jpg)
For beginner brazing tuition to masterclasses please visit www.solduramotorsport.com
Are you holding your breath during welds?
@@M4DBMX haha, yes, I use a technique adopted by snipers 😂
@@stubbycuts I do the same, but is just a bad habit for me I guess.
now what I would really love to lear is how to get a good geometry for a sport tpuring neo cafe bike
any advice ? any videos you have made about it? I would highly appreciate your help best regards
I am a 58 year old welder skills like this are on there way out . And yes welding is an art form. You constantly strive for perfection. Brazing is one of the many skills that is hard to perfect. This man has done that . RESPECT
I worked in oil and gas using oxy acetylene brazing for years. This video was great to see.
The bible declares in the last days he will take away the craftsmen of this world
Thanks John, very kind words. Cheers 👍🏼
@@NOBOX7 where the fuck does the Bible say that?
@@goodbyemr.anderson5065 I believe he may be referring to the fall of Babylon in Revelations 18
When I left school one of my first jobs was bronze welding motorcycle frames, clip on's, rear sets and headlight brackets for a company called John Tickle racing equipment. I used to do it on piece work rates and earned good money. The job satisfaction at the end of each day was great. (Year was 1969)
What an absolute work of art. A an engineer myself, I am in total awe of this sort of craftmanship. I just hope these skills are never lost.
THIS IS THE CLEANEST BRAZING I EVER SEEN IN 40 YEARS AS A WELDER...CONGRATS!
I don't think I want to ride on that motorcycle. The braise all those joints it's can't be as strong as regular welding can it? I'm not a welder I am a machinist who was a cop so I don't have as much experience in the shop especially with welding I'm an idiot when it comes to that. This wouldn't be a strong as regular welds would it?
@@brt-jn7kg well, I will love to see what people with more experience have to tell. I have the same thoughts but than I see bikes and motor bikes done like that, and they must be resistant!
@@brt-jn7kg In general they are, the key here is having to deal with less distortion. You also don't get to worry about corrosion. You have to realize the materials are not molten here but the filler is. Either way a good weld or braze is often stronger than the base material. When it comes to precision fit it makes sense to braze. The type of filler is important depending on the application. The cool thing is you can braze dissimilar metals as long as they are "brazable" for example you could have a solid carbide part brazed onto that frame, you could have a stainless steel portion and not have to worry about contaminating it (where it would eventually rust if welded to common steel, specially without ss wire/rod). And probably a bunch of other pros and cons I can't recall right now!
@@brt-jn7kg there is a good reason to use bronze....which is malleability
@@brt-jn7kg the early lotus race cars and such were all brazed together
Brilliant mister 👏👍
Was taught this method as a proper apprentice(5yrs)many moons ago.... Funny because gas welding and brazing are still my favourite
Many, many years ago when I made bicycle frames at Dawes producing joints like this was the test to get the job but once you were on the production line they expected you to produce smooth joints which did not require finishing. The surface tension of the molten brass helps and holds the material in place. Also if you cut through such a joint you will see that there is a secondary smaller fillet on the inside of the tube creating a stronger joint.
Thank you for sharing that.
"Also if you cut through such a joint you will see that there is a secondary smaller fillet on the inside of the tube creating a stronger joint." A fact that few are aware of. Well fitting and properly preped brazed joints are stronger, more resilient, and less prone to cracking than a TIG weld in general.
My company made race car, experimental aircraft and motorcycle frames out of mild steel [50k psi] to alloy steel [90k psi]. We used Eutectic Brand 1/16'' high silver content brass rod that made a tiny fillet...in and out. However, the joint fit had to be no more than 0.010'' to 0.015'' gap. We used a mill to make the cut to fit the tubes. The brazed joint was stronger than the steel in most cases. The special rod cost 5-6 times normal brass rod, but this was cheaper an stronger as you needed much less gas and rod with less cleanup grinding.
@@lifuranph.d.9440 Why would you make those things out of mild steel and braze them?
If you're brazing anyway you might as well use better, stronger steel like Reynolds 531. There was zero grinding at Dawes, we used standard brass filler rods. The silver solder was only used for pump pegs, lugged 753 frames and such like but that had nearly no surface tension and you needed to be really careful and quick to avoid a horrible mess.
When I went to school for welding 20 years ago we did this. I hated it so much at the time for my test I just jammed the rod in the joint handed it in and took the 0. Now how ever this is one of my favorite processes. You are an artist and your work is amazing. good on you sir!
At last, someone who is showing us how to do it properly!
One of the Positives of RUclips.
Not that there are many, LOL.
I had never heard of in line gas fluxing, you learn summat every day. I loved doing bronze brazing, It was always stronger than my crappy welding and it's so quiet and lacking in drama. And once painted it makes you look like the neatest welder in the world.
I wouldnt paint it, id give it a few coats of clear lacquer.
Have worked for 20years now since leaving school as a pipe welder in the oil and gas industry, and that what he's done in this video os some real top drawer stuff!!
I used to work in a factory that makes fuel filler necks for the fuel tanks for school buses and I was a braze welder for that. Every piece had to be leak tested by pressurizing and submerging in water tank. No bubbles meant good weld. I welded on average 40 filler assemblies an hour. I had done mig and stick prior to working there but never bronze braze with a torch. Small learning curve to get the hang of it but well worth the experience. Now I use it occasionally in my home shop for hobby work. I must say though, my welds were definitely not on par with yours. Beautiful work!
Chrome-moly tube & brazing = how light aircraft frames have been built for at least 1 century. The joints are extremely crack resistant where welding wouldn't be.
It’s so refreshing to have someone educated commenting :) thank you sir!
Can i build my roll cage like that?is it reliable as much the tig or mig welding is?why noone uses that technic for something like that?
Yeah but.... there's always a but(t) - materials science & welding technology have moved so far on that brazing is really not required any more, and unfortunately is becoming a dying art. Selecting modern steels & TIG welding can yield much stronger, lighter and yes crack resistant structures. TIG welding properly also inputs less overall heat into the joint reducing the risk of distortion. Brazing still looks bloody lovely though!
@@sakisdalakos6144 no I don’t care what these other guys say it may have been a technique back in the day nothing holds like the use of a tig with filler metal that matches your product. Yes you can mig or tig a roll cage just make sure to bevel your edges to get proper full penetration.
The FAA in the USA forbids brazing aircraft frames. It is not approved due to the sudden and catastrophic failure of these joints. I examined a wreck many years ago that was brazed and saw evidence of brittle failure. The Pietenpol brothers petitioned the FAA for approval and after much testing, they were denied. Adhesion joints are not approved anywhere on the airplane. Look at your SN diagrams.
Your skills are awesome. Thank you for not playing the opening music for the entire video.
Thank you too!
Absolutely gorgeous! That frame is a work of art and you sir are an artist.
Thank you sir, appreciate your kind words! Cheers
This guy is so skilled,he’s controlling precise heating on 3 components at once ,utilizing perfect timing,coordination,the results look very similar to tig welding aluminum,bravo!
Excellent technique, I have a 1979 Rickman Honda with bronze brazed frame. It has done many hard miles and the frame is as good as the day it was made. Reynolds 530 tubes. I enjoyed the video very much, thank you.
What a stunning piece of artwork! Even if the bike was never to be raced around a track and just kept as a piece of static art it would still be breathtaking, no wonder you need to remind yourself to breathe!
A lot of patience to do this but the result is beautiful and professional. People are always ripping me about using a MIG, saying it's not good enough. I'm going to point them in your direction from now on. That looks so good I'd put a clear finish on it LOL
Agreed. Clear finish! You make it look so easy!
Dual pulse mig and silicon bronze wire should do the trick
@@danvanmuizenberg6650 I wonder how much the joint characteristics would change?
There's no reason why proper mig isn't good enough for an application like this. Youre just a victim of the know-it-all youtube comment section. The vast majority of those making those comments have never used any welding processes in their lives. I promise you that.
I would prefer tig for the precision but mig will be just fine.
It works on stainless and mild steel. For Chrome molly is may produce cracks . Bicycle frames were done like this for decades as well as aircraft. Low temp, self normalizing , Easy to do ,it really has many advantages. Mainly no special tools or machines.
My dad was a fabricator ,millwright, very nice explanation procedure and video.. I learnt The Craft on old school bicycles. Go karts,mini bikes. But yeah this was in 1972 and it was basically the same,.. I was brazing whatever the bikes are made out of iron in 1972 ..9 years old. 🤑🤑🤑
Awesome man, great to hear! Started young!
I'd happily have that frame as a piece of art in my living room. Absolutely superb.
Cheers Andy, my old man’s done just that!
What can I say? What a beautiful job! A real work of art! Up until 2013 MV Agusta TIG-welded their frames and after painting they looked great. Then they switched to MIG welding and now look like rubbish. Too bad they couldn’t continue with TIG or the more time-consuming brazing.
Rickman Brothers built motorcycle frames in the Uk in the 60’s with a technique that must have been similar to this. This is a lost art that you have mastered to the highest level!
Thank you sir, I know Don & Derek from my early days making Metisse/rickman frames (2009-2014) where I got the opportunity to meet some old boys and learn from there methods.. Some of the older frames made by “Pat French” for example where some of the best in my eyes :)
Rickman, Next to know one I know to day even bike rides have heard of Rickman, I had the privilege to have a tour around there workshops and that is how I discovered the gas fluxer and it was all explained to me. The reason I went to Rickman’s was because Reynolds’s were out of 11/8” hardened and tempted 531tubing and they were willing to supply me, They were also building 6 bikes for a Japanese bike company but they wouldn’t say which one, if I was a bike Guy I would have known by the engine because they were all built up, without paint or decals. Great Video 🍺🇯🇪🏁
@@stubbycuts ..do you know Mark Jannink - he worked for Pat French for years and the new owners subsequently. His brazing is pure art.
I have a 1970 Rickman 650 triumph. The welds are great, but the tubing finish was rough when they plated it. Doesn’t look as good as early frames I think.
@@stubbycuts The first bultaco motocross frames were Matisse/Rickman.
Then Bultaco made their own...Pursang [pureblood]...not as good looking.
I can't say anything that hasn't been said. Amazing, beautiful, work of art,
What a great skill sir.
Thank you.
I thought it was only me who quit breathing when I do things like this, welcome to the club!
You are not alone! 😁
Haha! The lack of oxygen club.
I never knew I could hold my breath that long.
Breathing equals ending your mission 🤣🤣
Same
Now that is art! Never really understood the pretentious nature of splattering paint on canvas, that doesn't really do anything! This, just by looking at it evokes emotions. I think no one who has watched this video will say otherwise! Simply amazing!
Sir, I am getting into bespoke bike making, rather unconventional bikes, one is a semi prone position and the other is fully covered recumbent, and the last one is a bit conventional but a do it all bike designed to take you anywhere, with just wheel changes. I'd love to have a chat with you about this, if you like the sound of it. I'm a designer and would love those bikes to be a work of art as well.
At long last, i finally found a brazed bike frame video
You Sir Are a pure Artisan, I learned to do this more years ago than I care to remember now, So very well done and both thumbs up to you
Love the look of this, I have been watching Paul Brodie do a lot of brazing of bike frames. If I welded like this I would leave the frame raw and just clear coat it.
That is the most beautifully done brazing I have ever seen or probably ever will see. Nice!
Excellent quality bronze welding and demonstration. Is an oxidizing flame preferred with bronze welding or can a neutral flame be considered acceptable? I have a jet fluxer and will begin to practice on scraps to get the hang of the technique using Sifbronze 101 - which I have a small bundle of. I'm using 18 gauge mild steel pieces, no.2 tip and 3/32" rod. I use emery to clean the m.s. and then MEK to clean it up in preparation for bronze welding. I'm not expecting to get anywhere near the quality and appearance of your welds, but I'm doing it safely, and taking my time after taking a welding course at my local tech.. Any further advice is greatly appreciated. Have also viewed the gas flux bronze welding of Brian at Arch Motors working on an Ariel Atom frame. British motor racing companies preferred the use of bronze welding using a jet fluxer, and Lotus, Lola, Reynard and many more use(d) it for space frames as opposed to Mig/Tig due to less distortion. Thanks for a very interesting video. A+
Ed Wills wow, if you have experienced Brian Ashcroft on the job, you have seen the master at work.. it sounds like you got all the right stuff to have a go and get practising. All the items you describe sound perfect to start melting some bronze onto steel and just get to grips with how it moves with the heat. It’s really simply after the basic principles of the liquid bronze under heat are understood. Good luck my friend!
That, is a piece of art! Have worked as a coded pipe welder for the 20yrs since leaving school, started off at college with oxy acetylene before going into other techniques and processes.
Only ever tried Tig Brazing and that was only a few times with silicon bronze.
Oxy acet brazing that is one id love to say i can do anywhere near as well as in this video👌👌👌
Beautiful work, I learnt to mig and gas weld as a panel beater in the 80/90s and always preferred gas. It looks so much better and you have so much more control over the end result and the materials used. What a shame that frame is hidden behind plastic/carbon. Keep up the great work.
I am an old bicycle road racer. Bicycle frames with steel tubing (very thin and butted) were either joined with lugs....fixtures that were made and the individual tubes were inserted into them and that were brazed or if the builder was really good and when using the thinnest highest strength tubes or very difficult joint transistions they would use lugless brazing. I have a racing tandem bicycle that was built with lugless method for me by the legendary Bernie Mikkelson in California back in the 70s. The joints have perfectly smooth transitions. Besides less stress a lugless brazed joint also has a bit of a fillet on the inside of the tubes so increased strength benefit. Modern TIG welding and computer welding machines can lay a flawless weld every time but those old artist frame builders created wonderful lug or lugless works of art by hand that I marvel at the skill they had. A side benefit is if a crash happens and a tube is damaged.....it can easily be restored by removing the bad tubes and brazing in the new tubes. That is a very difficult process with a luged frame.
Great job, definitely an art! Like gas welding Aluminum, takes a lot of patience to learn and a distinct touch to get it right.
You voice is clear and concise, your instruction is also.
Don't sweat the small stuff.
You’re like the Bob Ross of welding. I know it’s difficult but you make it look easy.
Haha, the Bobster is incomparable to no man...
You make this look so easy and Looks Absolutely Amazing!!! I went to school for Welding and blueprints in 1997, When we were learning to braze, All the Popping and Slag flying like Sparks everywhere, I don’t think I’ve ever laughed that had in my life!!!! Great video
Haha! Yep I’ve been there but in 1999! :)
For a minute I thought I kept seeing a crack in your weld. It turns out it was just the screen on my phone. Lovely lawn chair you're making btw.
Been welding for about 17 years with more common process, i mist say, torch brazing is one string missing to my arc that i would love to add. Great video!
Nice but what's the strength compared to welding? Can't be much seeing how its dissimilar metals brass and chromolly?
ofc it's not as strong, but just like welding the joint here is stronger than the base material, and you can't join dissimilar metals with welding, so brazing is the only choice, the heat also peaks at a much lower temp.
It's Bronze, not brass
@@jsullivan05 I join dissimilar metals everyday with welding not sure where you get your info I am a 25+ year xray pipewelder and the filler metal in the video isnt stringer than the base material I am sure the base metal was either chromoly or mild carbon steel so do your research I weld stainless to carbon and inconell to carbon and hastaloy to carbon steel wich are all dissimilar metals
@@chrislindsey3523 I'm having a hard time believing you have 25+ years experience if you think those brazes are weaker than the tube itself, he literally has another video showing him testing to failure and the tube fails LONG before the join. 2. Dissimilar metals can be welded yes, but WAY more often than not they can't, the welds crack, and for those that do work you need all kinds of fun back purging rigs and what not. You make it seem like welding those tubes together is even an option over brazing, it's not, as soon as you put an electrode near it you'll blow right thru that tube, brazing is the only way to join them by hand.
@@jsullivan05 I guess that's why when I make a xray weld on dissimilar metals in a refinery or Petro chemical plant or nuclear power plant they always tell me to braze it not to weld it you can believe what you want I know the truth maybe all the welding engineers should get with you next time they do a shutdown to see if we need to braze or weld🤣🤣
Its That your Chair Creaking or the Frame? Every Time I hear a Creak, Ting, Tick or Crack I know that there is a Stress Point Forming in the Joints across the whole system. Work Heat the Entire frame then Fusion Tack all the Joints, Then One should Go about the Fine Brazing procedures you are doing. I'm not telling you what to do, I'm coming from lotus Race team experience as a TIG Welder and I would like to take up Old Skool Brazing to make Bicycles in as my Hobby. In the moment I am here to learn from your Beautiful Work. I have not attempted to Braze since Jr. school.
This is a wonderful display of skill . The final result looks amazing . I understand that this technique is not always cost effective in day to day engineering but in the workshop where I work I thinks it’s ignorance; they don’t understand the advantages.
Many thanks, well said
I’ve watched this about 10 and it never ceases to amaze me as to how beautiful these frames are,,,
Thanks buddy, very kind. Shame the project ceased eventually
You're good at explaining the process, can you do more videos please?
at 6:00 that was a super sweet step to use the filler rod & torch together to target heat induction around the joint . . . . interesting jig you have built. would be nice to have a quick 'walk-a-round' of the tool that impresses as a well thought out kit.
That’s outstanding. A real art form that’s functional. 👏
Would love to see more videos
In my apprentice program i took a welding class at a local college , turned out i was older then the instructor. He did not know how to braze,
so i thought the class and got and a out of it. This type of welding is beyond my skills but love the way it looks. GREAT SKILL.
Am I the only person who dislikes this guy and his work🙄🙄🙄It is unfair to people like me trying and this dude comes along holds his breath for 10min and brazes a bike frame that looks like it is held by Gold😁😁😁😁Great work ✌🏼✌🏼✌🏼✌🏼
Haha, thanks buddy! I’m sure you’d be doing the same in good time.. ha, best comment yet! 😂
I feel jealousy 😂
I learned to weld with a coat hanger and cutting torch in 1980 maybe, older guy taught me and learned bronze weld shortly after however never quite this good at it and didnt need that skill much. Takes me back to my early years.
Thanks.. Nice, haha! A coat hanger.
This is some of the sexiest brazing I've ever seen.
Haha, thanks :)
@@stubbycuts is there a particular reason you would choose this over the superior be strength of a full weld?
@@jonathangarzon2798 cosmetics reasons only.
Nicer if you use tig torch
@@stubbycuts he said, "some of", don't get too prideful. Lol
For Welding most metals TIG is my go to for Welding.
But saying that Brazing definitely has it's place.
Great for Welding dissimilar metals like Non Ferrous to Ferrous metals.
The plus of using Brazing over TIG as shown in this video is the COOL factor too, LOL.
Brazing does have that appeal ( IF done correctly ???? )
One other argumentative plus of Brazing vs TIG.
Brazing is usually a slightly cooler / colder welding process.
Where the base metal is Welded at a lower temperature
( of course this depends on the experience of the person doing the process ???? )
Regardless of which process is best.
Definitely enjoyed watching something different here on RUclips.
Thanks for posting this video.
Peter.
Amazing craftmanship sir! Beautiful joints!
Brazing a motorcycle frame? Curious.
Beautiful job every bit as good as the bronze welded harris frames
Much respect
Keep up the good work
Thanks, they are done well. Very kind. Cheers
Great work, I remember when quality bicycle frames were made like this in the UK using Reynolds tubing, was a big industry.
The Brits seem to excel at marrying machinery, materials, motorcycles and art. Beautiful work! Listen to his breathing.
Wow! Beautiful work, it looks amazing. I had no idea that bronze brazing had such strength. I have so much to learn when it comes to welding, brazing and fabrication. Nice job and thanks for showing us how it's done!
I learned brazing in autobody class but we didnt do much, love it and i should get back into it
Absolute craftsmanship and I can appreciate the nostalgia but I could tig it with silicon bronze in about a third of the time with a lot less heat induced stress
I can see myself enjoying the whole process. Art meets function
Not to mention the Reynard, Van Dieman, Ray, Quest etc. etc. etc. Formula Fords and other small bore tube frame racing cars made in the UK over the years. Certainly very strong, mine survived my off track excursions! Well done, many thanks for posting this!
We definitely have a successful history with this process.. no worries! glad you enjoyed.
Watching things like this show cases real skills, most people learn away from brazing but i personally find it satisfying kind of like making a knife by hand you have to practice and learn your metals etc..
When you wrote that the health hazards are much less than with TIG did you mean due to the Thorium and Tungsten and the high-frequency electromagnetic fields and Ultraviolet and Infrared exposure with TIG compared to just some particulates and possibly a little phosphine or arsenic in the acetylene welding gas?
@Knott Bobby there is no UV light from a flame. Infrared, yes.
@Knott Bobby no need to get upset.
I'll use a lens...but that's for brightness, not UV rays.
@@Golgi-Gyges poor baby got proved wrong then he went and got all butt hurt 😢
@@goodbyemr.anderson5065 really?
Ha ha!
Well, nobody's hurt here...and I wasn't proven wrong. There is no UV light from that brazing flame...the guy is talented with his task. You don't need to get upset if someone else calls out a wrong.
Ridiculous!
Brazing can withstand vibrations much better as a normal steel weld,this is why good motorcycle frames were braze welded.Nowadays we have no more time and all is welded with steel....nice job👍
Poetry in motion. Beautiful to watch mate 🇦🇺👍👍
Been a welder for 17 years tig MIG stick, only tried brazing when I was an apprentice but this is beautiful, looks amazing.
Hope I don't sound dumb for asking but is he welding bronze on cold rolled steel or aluminum never seen this done before I only weld stick or mig with argon of course amateurly
@@eyyymanuel He is joining chrome moly (eg 4340, 4140) steel. Bronze (or silver-based) brazing alloys can be used to join most metals provided they melt at a higher temperature than the brazing alloy. Aluminium would not qualify, but there are low temperature brazing (it would border on soldering, which is a lower temperature process than brazing; I think the terminological cutoff is about 450 deg C)
Brazing does not melt the parent metal, so it's not a welding process. The brazing alloy forms a strong intermetallic compound (an alloy of bronze and steel, in this case) at the interface, so it's more than just an adhesive.
Bronze is also very tough (good impact strength): depending on the exact alloy it can be tougher than steel, if it includes nickel and aluminium, particularly.
Damn, that’s amazing!! I’m now inspired to try this. The rate of travel is higher than I thought it would be (the pool solidifies quicker than I imagined).
Obviously prep is key like with tig too, your fitup is super crisp.
I used to do this kind of work, making frames at Zip Karts. The inline fluxers are great for production work as there is no need to paint flux onto the joint- it is already supplied directly through the flame.
I wish you would have done part of this with a lens on the camera so that we could have seen the placement of the rod and the puddle. I had to do a small piece once for a aircraft class and it took me several tries to get one piece that would pass! Thanks for the video. What is a in line gas fluxer?
There are special lenses for this kind of thing, "Didymium glass", goggles, filter plates, clip-ons. Glassblowers use this also, it cuts out the yellow sodium flare so you can see. NO IDEA how this deals with all the green light from the flux! Gas Fluxer is a commercial product. It's a chunky little pressure-vessel filled with flux, your fuel gas bubbles through it and carries a little along to the flame. Super rugged but of course a little expensive. I once saw one in production, people were silver-soldering all day long, the green flame was really striking. They loved the Gas Flux action and were really positive about it. This was for constant daily use. I want one, but only braze and silver-solder occasionally, so a little regular flux is good enough. Here's a trick I got from an old BOOK: If you heat your brazing rod and put it in some flux (maybe lengthwise, in a little trough)... then gently heat this wire with your torch you can fuse that flux and make it run down the wire in a clear glassy form. So all that bubbling action is done, right? Now your brazing rod has a few inches of a clear flux coating on it, it doesn't make all that mess and confusion when it gets on the work! Just spreads out a little. This is for small delicate work. For something big you can just slather it on there with a brush!
Absolutely flawless, from one tradesman to another, respect sir.
Thanks buddy, kind words cheers
Amazing skills and it looks great, Can anybody tell me what is the advantage of bronze brazing over normal wedding? Which one is stronger?
Im not sure but i think normal welding is stronger than brazing because when welding normally you fuse the metals together to one piece and when brazing you are like adding a glue between the parts. they are together but they arent fused. sorry for bad english and correct me if im wrong
@@hujop thanks this is what I was thinking but still not sure
For thin wall alloy tubing there is probably no difference in strength between braze or welding as in a destructive test geometry comes in to play so it is always the tube that fails or collapses. Not the filler material. The advantage of brazing for this application is that its lower temperature than welding so there is less distortion and less chance of locking in stress so less chance of fatigue cracking over time in use.
on alloy steel, there is no nitrogen embrittlement that needs stress relieving with brazing, there is a choice of brazing material that exceeds most steels.
Beautiful job, looks great but it's obviously very strong which is the real point of this. Thanks for sharing.
Thanks man, yes, survived 3 full racing seasons so far :) cheers
Have been looking for this detail for bicycle building, thankyou
Fantastic welding mate , I do lead burning what’s the chances me pulling this of ????
Pretty high! Lead work is a very similar feeling, good luck
Awesome video! I hate filming myself for the same reason... the voice lol. Don't worry though, everyone's voice sounds bad to themselves. You're voice is not offputting. Keep up the good work!
Finally a video without clickbait.
THIS IS A T R U E art well done my only problem is after its done I would just want to hang it up and just Stare at it
I have raced formula cars (Lotus, Chevron, Brabham and currently a VanDiemen) all made in England. Every one of them was done like this. Never had one problem. This is high art and takes practice. Tig welding, although it takes some practice, is much easier. Another advantage is that you can remove parts brazed on which makes repair much easier. I flipped my car some years ago and had to replace the roll bar. Just melted the brazing and off it came. Re-brazed the new one on. Beautiful work!!
Great to hear this from your experiences racing.. it’s amazing how this process is not that old yet completely forgotten about in the modern world of fabrication. Thanks for your input! Cheers
Thank you I can see we’re I’ve been going wrong mine always looks like a molten mess I’ll try and do better
As an American viewer, Your voice, accent, pronunciation and cadence are perfectly pleasing to listen to. Your speaking lends a knowledgeable flair and gravitas. Now...where can I get the flux core silicon bronze brazing rod. Flux coated is messy. Thanks !
Thank you sir! Very kind, oh good question, not something I’m familiar with, only the flux coated rods I’ve seen from my supplier.. good luck my friend!
Hey there! Nice video. I was trying hard to see the actual melted bronze fall onto the frame but too bright. Any filter for the camera make it so the viewer can see what's occurring?
Hello my master, is it necessary that the wire we use for welding oxygen-propane and stainless steels with brass must be 'cored brass welding wire' sold for tig-brass welding? Or can we also weld with pure brass wires? (provided to use flux, flux etc.).
Nice job. What's the advantage of brazing like this opposed to TIG welding? I thought brazing with bronze was for dis-similar metals. Thanks.
One advantage is being able to get into very tight spaces. There are lots of arguments out there over the strength of this type of joining but one argument FOR it is that the HAZ is much less than for tig welding. This is a lower temperature. For heat treated Chromoly...there is nothing better.
"TIG brazing"
@@Golgi-Gyges TIG Brazing is tricky because the arc is so intense that it's difficult not to bring the parent metal close to liquification, which diminishes the performance of the joint and cannot be detected after the joint is made (and sometimes is not even obvious to the person making the joint)
@@Gottenhimfella Wrong. Any good welder knows how to control the heat. And that is easier with TIG. All nonsense you wrote there. There is quite a melting point difference in the base metal and the bronze rod.
This is beautiful worksmanship! Really enjoyed watching
Thanks buddy, glad to hear. Cheers
Those are beautiful joints! How do you tack the tubes before brazing? Do you put a little tig weld tack on them? I'd really like to try this process on bicycle frames.
Yes on certain jobs I use a tiny tig tac, also small magnets are good at times with tube work I find..
Sometimes a bridge tack could work when small adjustments need to be made. The small wire bridge can be bent instead of breaking or grinding a tack out. Then grind it off when the weld is done
The correct terminology is "bronze welding"
In bronze welding a fillet of bronze is created which adds structural strength to the joint as well as sticking the surfaces together . In brazing there is no fillet ,the bronze filler is restricted to the jointed surfaces and is drawn in by capillary action .The bronze merely acting to hold the joint together as a adhesive would ,but adding no structural strength to the joint.
What, if any, are the advantages of bronze brazing or welding over TIG welding?
@@Iblis666ful The low heat input results in less changes in the base metal.
I don't know if it is still the case,but tubular space frames for aircraft were always braze welded because the strength of the tubing was not compromised.
@@paulg3336 Thanks for the reply. Makes sense in high stress applications I suppose. Or with specific alloys.
@@paulg3336 i was told welding prone to cracking compare to braze, since it give a bit of flex. Is it?
@@shhhdontshout It's all about the HAZ (heat affected zone) en.wikipedia.org/wiki/Heat-affected_zone
Brazing and TIG put less heat into the base metal so the HAZ is smaller
Absolutely gorgeous! I have to ask though, why braze over TIG welding? I know nothing about frame building, I’m genuinely curious.
Some steel alloys like the Reynolds 531 are practically unweldable, sometimes because of their composition, sometimes because of a heat treatment. Also when using a very thin walled tubing, or a mix of different steel alloys. A braze welding, a kind of super gluing with a bronze is preferred in these cases. Another advantage brazing does not introduce HAZ steel hardening, nor welding internal stresses (which sometimes need an heat treatment to relieve those stresses).
What I've read, but no experience, the torch process (weld or braze) allows the chrome tubing to retain strength without a heat treat cycle after it is finished. I've read the wire feed welding can be weaker on this tubing because of the extra heat input, some racing organizations used to require heat treat if the roll cage was wire welded, but TIG was considered OK and torch weld was also OK. As far as braze vs tig weld, I'm not sure which is why I landed on this question. Good bronze braze has a strength up need decent weld and certainly puts less heat in the joint. So I'm guessing a combination of factors for this specific why A over B process. And again, only stuff I've read.
@@minigpracing3068 The chrome molybdenum tubing hates violent welding, the R 531 loses strength if heated above certain temperature. I've used bronze welding on competition 50 cc motorcycles frames because we were using 0.8 mm walls Reynolds 531 tubing. When using weldable steel alloys at decent thickness bronze welding is of little interest. You have also other tricks like using stainless steel 312 sticks for welding very different steel alloys or when you want to minimize distortion.
@@pabloricardodetarragon2649 wow, thanks a million for that explanation. Makes total sense now but I was really confused before reading what you wrote.
@@pabloricardodetarragon2649 Thanks for both replies, I have read of other people brazing racing frames before, now I have a better idea why.
Last time I did that I was in school. Nice job; but why braze it over TIG welding it?? Wouldn't a Tig Steel weld be a lot stronger?
I love the look of bronze brazing !
Me too! :)
@@stubbycuts I've never saw that process for bike frame. I'm just wondering how strong it comparing to steel soldering. Do you use some particular bronze allow to keep the joint not too brittle ?
@@UPR91 Silver alloys are usually used for bicycles, bronze for motorbikes. (Probably for cost reasons. Bronze is not as easy to get a good tidy result, but the filler metal is much more affordable and slightly stronger)
Beautiful work. I didn’t understand what you meant by in line flux, please can you explain? Excuse my ignorance.
Absolutely stunning, this shows that with patience and a steady hand, anything can be achieved... well almost anything... Now if someone could just post a video of how to please a woman, or at least how to braze their mouth shut, then I could say with complete confidence, that anything is possible!!
Three in the pink, one in the stink, and a thumb to polish the pear.
You're welcome lol.
@@goodbyemr.anderson5065 lol I have heard the first part before, but the polishing the pear is new to me.. just shows you learn something new every day!
@@goodbyemr.anderson5065 kinda like liquer in the front poker in the rear!
@@Brandon_Hisey_music exactly like that 🤣🤣🤣
Only youre gonna wanna watch your spelling. But yeah just like that saying.
Torch 'welding' hard copper plumbing fittings with copper filler rod looks similar - thick puddle, nice welds.
Excellent content. Thanks for sharing. What type/shade lens do you use to view the puddle in the flame?
For brazing I use a shade 3-5..it helps if you are in a dimly lit room with no draft.. you want the joint to cool as slow as possible..
Yup! Agree with this :)
For accuracy like a sniper, you have to hold your breath like him.
Congratulations, nice work!
I had a read of your Description
I had a giggle at your preemptive strike against the it isn't strong enough crowd
I didn't know about inline gas fluxes I'll now have something to google this evening thank you
I thought wizards had pointy hats? Excellent work & great video. Can you tell me what material is being joined ? 4041?
Please make more of these videos.
What is the brand of the torch with the inline fluxer you use and where is it available to purchase ?
I use a boc torch, I believe the fluxer I use is obsolete, there are new units you can purchase from ‘the gas flux company’
I would Love to be able to Tig Braze.
A very beautiful job, I'm hoping ican bring my own work up to this standard.
A couple of points...
This is called bronze welding when fillets of bronze which chemically combines with the surface of the parent metal. Very much in the way soldering works.
Brazing is technically when the bronze rod is flowed by capillary action into a joint as in a tube and lug frame of old.
I was told off by an old timer for mixing up the terms bronze welding and brazing. Just as a note, in bronze welding the parent metals are not melted together which makes the term a little misleading.
I'm interested in the in line fluxer as I've been using fluxed rods and would like to try a different fluxing method.
Thanks you, it’s only time with the torch, Good luck!
Haha, yes I’ve got in trouble before with old timers and so on with definitions. Something just won’t let me call it welding as it doesn’t makes sense! Metallic adhesion maybe? 😂
And in line fluxer is the best investment you can make when doing this process, I highly recommend it 👍🏼 cheers