Too much engine, too little frame.
HTML-код
- Опубликовано: 5 сен 2024
- Finally got a proper test ride in! Not the best conditions though. Can't complain, I didn't die.
Paul Brodie's channel:
/ paulbrodie
Wheel building video:
• Aermacchi Wheel Build ...
T-shirts, hoodies, stickers etc
teespring.com/...
Support me on Patreon!
/ 2strokestuffing
Donate to 2STROKE STUFFING
www.paypal.com...
or
www.paypal.me/...
Instagram
/ 2strokestuffing
facebook
/ 2strokestuffing
DIY Arduino dyno shield
ardyno.weebly.com
Twostrokerider
www.twostroker...
Twostroke.se
www.twostroke.se
Treatland
www.treatland.tv
Emot Racing
www.emot.nl
Get Simpledyno here:
sites.google.c...
Did you know there's a t-shirt? 2stroke-stuffing-merch.creator-spring.com/listing/new-not-enough-war
you have to losen the spokes before cutting them.you can even break the rim while cutting them
@@ionetuning6231 No worries, they were all loose(and impossible to tighten without breaking)
What is the total weight of the engine?
I have an extra nipple too.
121km/h on Mk pro race, on the proper bike.
If you haven't pushed a 50cc 2t to its limits on a wet and windy day,
you've never really lived!
well its not a 50cc
@@Justus07 close enough ;)
True. I tuned my first Honda C50 to beat Yammy fizzers a million years ago. I was always happy when we raced in the rain because the engine ran better, the leg shields kept me dry, and the competition got soaked! It was on long corners where I pretty much just prayed. Happy days.
Peace
i miss my Honda NS50s.... that thing would do 70 mph stock
Dude you got ballz. Ripping in the rain is CRAZY! Awesome video man
Why not get a used passenger hinged foot peg off a modern bike for the right hand side that way you can flip it up to kick start and flip down to ride 👍
Yeah I was thinking fold up pegs too... The only problem is all folding pegs I've ever seen are sprung.. idk if a detented peg exists? All he'd really need is a small latch or something to hold it in while srarting
@@ianbuilds7712 use the rear passenger pegs, they all lock up and down 👍
@@ianbuilds7712 they exist, have a Chinese bike and they don't bother with the springs
Like on the old brittisch rscing bikes!
Yeah I have had a lot of dirt bikes but the only on road bike I ever owned did not have its rear pegs on it
That sound really brings back all the memories, I feel 16 again.
I can give you some advice on tuning the carb, if you believe that you need it :)
*Air Intake*
The principal of the air filter, is to have as much filtration surface area as is possible.
Ideally (function over form), you would have an air box, that will allow the 'air charge' to take shape, as it approaches the trumpet.
The trumpet will then increase the air density, which will also create momentum (to pull in some extra fuel mix).
Think of the air flow as a train ... with each carriage representing the 'piston descent volume'.
IE. It is not continuous flow; rather, it is packets of gas, being delivered to the combustion chamber.
Clearly; having the packets of air lining up nicely, is the ideal.
This is why the filter at the trumpet edge failed.
Adding the multiple mesh sheets, simply disrupts the air flow - though it offers greater flow than the sponge filter.
Therefore, before you can tune the carb, you must decide upon the primary air intake.
Either a single mesh over the trumpet, or none at all, or a box that can support a good area of high flow sponge filter (Twin Air offer a 0.5m2 sq sheet for cutting to size).
Or make a box or cylinder frame, that can hold the air filter sponge.
For dusty conditions; spray it with a small quantity of very light oil, and massage the sponge, so that each fibre gets finely coated.
Remember that you are tuning the carb fuel flow, to match the air flow; so decide upon your air flow, and tune to it.
If you change the air flow, you must start over again.
*Timing*
Similarly, set your timing and tune to it.
Once done, and max output is achieved, you can fine tune the timing, knowing that you have achieved maximum burn efficiency for that previous timing setting.
Don't jump around, changing this and that ... you will simply lose contact with reality, leaving you with your head in your hands ;)
*Carb Tuning*
One of the problems with choosing an exotic carb, can be the lack of data ... particularly the needle geometry.
Other than that, you primarily must set the idle circuit and the main jet.
The needle (with the atomiser) joins the two phases (pretty much; leaving the slide cutaway arc alone, until the first round of tuning has been achieved).
On a Dellorto, for small cap two strokes, the idle jet is kept small 36 - 40.
You want high efficiency fuel burn at tickover (blue flame), to keep the combustion chamber hot for the transition phase.
This is typically prior to hitting the needle taper - so you will be on the parallel land of the needle.
This means that fuel flow increase is entirely 'demand based', resulting from increased piston speed.
... the piston pulls fuel, and accelerates, so pulling more fuel ... until the fuel flow area (atomiser dia. minus needle land dia.) chokes.
The choke point is when an orifice can no longer allow more fuel to pass through the gap.
IE. It is now choked.
If you are still on the needle land (at this point), and you open the throttle further ... more air will enter, but there will be no increase in fuel.
Note: Everything about tuning a carb, is based upon the choke point of any given throttle position ;)
Clearly, at the choke point, you must hit the needle taper.
The taper, then progressively increases the fuel flow area.
Note the term 'progressive' ... think about it....
Once on the taper; not only are you increasing engine speed (and load), to extract more fuel from the gap ... the gap itself is increasing; allowing even more fuel flow!!!
Now you can understand, why the carb tuner wants to hit the taper, just as the power band is hit.
In the powerband, the engine is voracious, and it will consume almost anything that you throw at it :D
When this is achieved, the bike will be totally fun to ride ... entirely responsive, and will accelerate out of corners, putting a huge grin on your face.
But how to achieve this?
The key point to note, is that on small cap bike, the main jet generally exerts influence throughout the range (lessening towards tickover, but the influence is there).
Hence why you must re-set the idle circuit when changing the main jet (two minutes so hey)!
So don't worry AT ALL about mid range performance ... just gradually get the bike to top speed; whilst looking for the throttle dead zone.
IE. when you open the throttle, nothing happens - meaning at that point, the mix is too rich or too lean.
If you hit the dead zone ... edge back the throttle for a second or two, then throttle off to a stop, and check the plug colour.
If no colour it's too lean; if dark it's too rich.
This is easy peasy, fast carb tuning.
You just need a long straight road, a plug spanner, and a couple of new plugs (to change if the plug is carbonised).
Okay; so you now have the main jet pretty close, and the idle circuit set.
Now, you need to install a needle with a taper that begins when you hit the power band.
if you have started with an atomiser diameter that is too small ... this will be difficult to achieve.
... but let's say that you've got lucky :)
You now have a needle that can be adjusted (notch positions), so that you hit the taper when the engine hits it's power band.
Now it is time to select the taper angle ... do you see how this is a different phase?
Gradually sharpen the needle, to discover how much fuel can be burnt, to produce an increase in power.
When no further increase is achieved, then go back to the previous taper (to stop wasting fuel).
You will have then achieved maximum fuel burn efficiency, according to your riding style, air flow, and timing :)
The old school tuners did the maths for each needle ... nightmare!
I couldn't face that, so I designed the Needle Carb Fuel Mapper™.
If you want a graphical fuel flow map, that relates to throttle position (showing the curve, and exactly when the taper is hit), then you can find it at fuelmapper.com.
You can add any carb, as long as the needle geometry is available (measuring a needle can be done, but best with an optical gauge).
There are walkthrough vids, listed on the website.
It allows multiple overlays of different needles, so that you can virtually design your fuel flow, before buying the needles.
I created it for myself, and like minded individuals, so it's just a friendly €20 hit, to join the carb tuning club :)
I also throw in a 'carb tuning guide' (work in progress).
Either way, I hope that the above info helps you.
Good luck with your project :D
Very good input. I've watched most of your videos to decipher all aspects of carb tuning with mixed results. This comment made everything much more clear to me!
Thank you :D
Wow very good information carburetors can be a pain
@@Formula400Pontiac Yeah sorry !
I'm guilty, but with mitigating circumstances ;)
With things as they are, you can probably imagine the shit hitting the fan, back then when I was all set to make the definitive series.
It wasn't pretty ... a bit like a heavy bag that swings in a boxing gym; only that they are designed to be pummeled.
I had the knowledge (the full picture), and I knew how I could tell it over a few videos.
I'd been working so long, and intensely (on the matter), everything had clicked into place ... and I knew that no one was talking about the reality of what was actually happening (it was all copy and paste).
I figured that just 3 hours would cover everything.
Ha!
That was obviously not acceptable.
"Aye they'll stand" is a great quote; until the first volley of musket balls slice through the ranks ... followed by a second, a third, and a fourth ... until you can't stand.
:) The thing is ... that sounds romantic.
It isn't ... and the knock on impact, is even worse.
Hence why the series was never completed.
I survived, and am now entirely fit and healthy ... but the full and true explanation of carb tuning might never be told.
The above text, is just a brief overview.
However, I am pleased that you made sense of it.
For the win, is to visualise what is happening.
I saw an interview with the guy who developed the first micro-chip.
He ingested a very small quantity of LSD, and then (in his mind) rode on a space hopper through all the gates.
That was his virtual test, and he knew that he'd done it :D
Understanding the carb is very much like that.
So re-read the text, and go for a ride.
You might see so much more.
You might see crankcase compression, and the physical limitation, of moving a packet of gas (over the distance), to get it fully in place for combustion - whilst cooling the piston crown, prior to the next combustion cycle.
... and much more :)
It's a great journey.
:)
Hi thanks for the advice
@@EngineTuning Damn I could have used this information when I built my first motorcycle/bicycle from scratch to get to high school. I built a motorcycle/bicycle hybrid with 3 1984 Yamaha 50cc moped engines combined together. I never got it to ruin perfect but it was reliable and made lots of noise with triple pipes. I wanted to try to machine an intake to run 1 big carb but I really hand no clue what I was doing. I was lucky to get it to work in the first place, lol. I now runs off of 1 125cc CR 125 engine from an old dirt bike. Not as powerful as the triple 50cc for some reason. Not even close, the the triple had double the power IMO and it wasn't even running perfect. Mostly running super rich. thanks for al that info.
Allen Millyard--“Hmm that would make a nice triple”
well that brought back some happy memories, my first 50cc trials bike that I gave full throttle and it stuck wide open and then some, it was a white knuckle ride for a fifteen year old, scared me to death, excellent, she sounds great can not wait for the tune up and test run, just do not get yourself killed, if you do I will never speak to you again, lol
🤣😂🤣
2 stroke stuffing, Alan Milyard, Paul Brodie and Works46 - really great stuff
Don't forget ASoftaaja.
I have never seen a drywall lift used to hoist a motorbike before 🤔 but I do respect the hustle 😎
😁
An air duct/box between the tank and the radiator. Then add a large pod filter at the end. When the airbox capacity exceeds 1l the restriction of the pod is compensated with the air stream from riding. Always good clean air at the carb, with practically no restriction. Adding a drain tube and a velo stack inside the box keeps the air pressure always ambient, consistant, clean and dry.
this!
Great idea!
I was hoping the supercharger was on this engine where it would breathe no matter what but it didn’t look like it
@@kevintucker3354 While the supercharger looks intimidating and seems like a powerful setup, it's a lost cause. The engine is too small, and doesn't have enough cylinders to run the blower, and the power band of the engine is way too high on the rev range for the blower to operate. Even if the pulleys were geared to slow the blower down, it will still rob more power than it can gain. Also for the two seconds of runtime, it's pointless to mount it to any bike. Great project for YT videos, very bad for actual use.
Pretty damn fantastic! Oh how I miss my bike.. But at 70 with my back and hips problems those days are behind me.. took me years to come to terms with it.. But watching you rip down the road made me remember.. thanks brother ;-) Carry on!
Brother I relate to hip and back , I did pro BMX and surfing our bodies took atoll
@@johnmartin2079 Who knew John, that we would have to pay for our adventure and fun when we got older.. I never expected to get to 70.. now.. Well, heck.. not much to do but remember the fun and wait for the end.. It's not to bad though.. Hang in there my brother.. and keep carrying on!
The driving conditions in this video really ad to the deathtrap feeling 👌🤘
Not a death trap at all he says. While only running with a sketchie front brake with skinny bicycle tires in the wet ! Great work and glad you are still alive to tell the tail !
Rather skinnies in the wet...
Whoever did 109kmh on that bike is a total mad man, I hope you told them 🤣
Get a proper filter sock which is designed to be slid over a velocity stack, even mesh can be very restrictive when you work out how much area is removed by the wire.
I'd happily do it 😂👍
Mesh on that velocity stack is very bad for the air flow but anyway it´s a fast bike and even I would not want to test it´s max speed. I have ridden many different built bikes but that one is something else really =).
My Yamaha Aerox scooter goes 120kmt ^^ ^^
Not to brag
Stage 6
@@RegulareoldNorseBoy Your Yamaha Aeromax probably has suspension and brakes though.
@@ferrumignis I would gladly swap my scooter for this insane bike anyday
Fuck me, when that comes on pipe it's insane. Reminds me of my old KR1-S. Except without suspension or brakes, and with bicycle tyres. You're a madman.
Dude that bike. That weather. That speed. This guy is my hero
In 2007-2008 I raced 50cc in the Belgian Championchip. On long tracks we reached 165Km-h with an average track speed of 122km-h. I also had a derbi setup with metrakit cilinder-kit and Metrakit gearing. On the bench we topped at 19HP
You're a madman, respect to you building and driving that in the rain!! Mad Props
So Good to hear that little motor sing towards the end of the video! Makes me want to get out now on my DT-1 but it's 1.30 in the morning..........Soon.
Great to see you actually get out of the shop and enjoying yourself.:()
This is TRUE EDUCATION. I didn't miss one episode since you started your 50cc project. 💪💪💪💪
Thanks for taking us along for the rides. Man that thing sounds like fun when you get in the power!
This is my #1 channel on RUclips your an amazing mechanic/ designer builder please keep the videos coming !
Excellent! That looked like the right amount of fun after all the work, thanks for taking one for the team and going for a rip in the rain!
After watching that video in the rain, "Death Trap" seems a more fitting name than ever before.
Kind of reminds me of testing Mark Lavoies Bultaco 125 new chamber I made, 1971 in the winter snow down my snowy driveway, screaming WOT, spinning the rear wheel of course in the power and, stuck throttle cannot stop flying into garden not hitting anything but the hard frozen ground with both wheels locked up. Great to be young and have motorcycles!
Great to hear it rev out
24:38 you had my heart at "BRRRRRRR BRRRRRRRRRRRRRR"
'It rips and I'm wet' Pure quality, keep it up matey
its ALIVEEE!!!! youve made a beast man! good job.
Sounds like you nailed the running of the engine. Well done!
I'm glad you got my screenshot from my legal run on the interstate!
😁👍
Good to see you having fun there's nothing more exciting than hitting the powerband on a 2 stroke
Outstanding shipmate. Press on. USS Kitty Hawk CV-63 Jan 1980 to July 1983.
Watched your video and subscribed. I can see you like what you do! Thanks for mentioning my name. I'm glad you didn't fall off those bicycle tires on those wet roads. Paul
Hell yeah Paul Brodie has a bunch of killer videos! Good looking out
The part with the gloves 🧤 killed me! 🤣🤣
😁
Love the Paul Brodie shout out!! He is a fine master craftsman!
Employer: what do you do best?
Me: 4:33
Employer: uhmm...okay. Any specialties?
Me: 6:57
Hahahaha good one!
Wow, that bike is wicked, well done and thank you for the video!!
Great back to basic build 😎 The bike is really clean and scary fast.
LOL I was watching that dialogue "so now I'm tightening the spokes, one at a time" and I'm like ahhh... hate to break it to you brother, but this film is either flipped or you're loosening ALL YOUR SPOKES. Then you owned up and I'm like this guy is honest bahaha. Well done on your build and your videos I love them.
Thanks for doing it with a chestmount! Love your channel :)
Love that crazy bike, ya madman 😁✌️
You mentioned it was cold: is the engine warming up okay?
You could 3d print a throttle tube with a larger diameter cable up take mount/spool. Alternatively, you can buy throttle tubes with multiple sized cable cams, so you can mix and match the ratio.
I reckon your carb intake is battling against the air flow when you're at speed. Any form of rudimentary air box will help.
🤙
Not every day a favourite RUclips channel mentions another favourite RUclips channel that's hosted by the same hands that made both of my favourite mountain bikes. Paul brodie makes Saturday better.
Nice to see you ride it even in the rain.
Do you cell your own homemade cylinder? Iam from sweden and ive watched alot of videos of you.
I concidring to split a rotax twin 600 cylinder to get a singel 300cc stroker that is relible, but when i have seen your ports and the thickness och the skrit on your own i wanna buy one, get one.
Low cc with high performance with long life time is what i wanna get..
And iam just a normal guy who love twostroke engines, and i wanna get my old Sherco motard -08 a new life, ive saved it for my lifetime. Sorry for my terrible english and i hope you got time to read this
Dude I’m a wheelchair user and I don’t trust the wheels I’ve laced up. You are a cold blooded beast. Bravo sir!
Rotate the clutch perch up so your natural lever position is down away from the travel stop. Maybe that’ll help in the mean time while awaiting parts.
Kick ass project!!
Thank you as always!
-CY Castor
Looks like it's doing at least 60 to 70 mph. Awesome as always
I love the crackle of a two-stroke my rd350 was very fast I always enjoy Two Strokes on the street
Ha, that was awesome! Hope you don't need to stop quickly, but the roads look nice and empty at least.
Thanks for taking the time to post all of these videos. They have been invaluable to me when I was trying to learn more about 2 stroke performance and trying to build faster, more powerful engines for my bikes. Without your videos I'm not sure I'd have anything close to what I've built in the last few months. Good to see you out riding and once you got that bike tuned up and dialed in she seemed to want to blast right off into space..LOL Not sure I'd have much fun on wet roads, but your tires are probably better than mine...LOL. You do a lot of good work, and always seem to have some very interesting ideas. Thank you again, I've learned a lot just watching you do what you do.
Man, I'm freezing just watching. Weather is awful! Bike sounds very good now. Fun! I'm going to uncover the Aprilia RS50 now, have not ridden it for years.
Wow! She rips man! Nice build, great video.
Been looking forward to this all week!
its Tuesday
@@la_plata3588yes only Tuesday sadly so.....
@@dirkventer8112 it’s been a week since the last video 🤦🏻♂️
Good to see your progress man. 👍 take care on those roads .
Nice job, if you could get a Uni filter with the rubber base it will clamp on your velocity stack and have enough surface area to work properly. Or try a different velocity stack.
Thanks for the ride.
I appreciate your @ stroke envy. I'm a old hand at two stroke racing did it for years, kart racing! Love those Italian motors, open two strokes no rules was my favorite.
Yeah Keith, I'm an old kart guy too. I loved the Italian 2 stroke open engines like komet k88, BM ss and the last one I had was the parilla reedjet 100cc is all I had. If you go way back I started in junior high with the McCullough 91 series engines. Good old days. Wish I would have had these videos back then to get ideas for more horses! Thanks...great channel!
"Can't complain, I didn't die." Classic!! 🤣🤣🤣
Love your videos,…. But I’m at 23::06 and anxious because your not tuned!
A few minutes later and I’m loving the video! Dial that motor!
Love your content!
Takes me back to the days of Garelli's and Dutch Sachs engined Brommers!! Great project!
That little bike sounds so good and looks like it goes a lot faster than I would want to go on those skinny little tires!!! It looks so fast!! Thanks for Sharing!
You are a madman @ 24:40 🤣🤣 especially when you are on bicycle tires 😉😁🤣
😳 27min? YES!
The NSU Quickly finally lives up to its name
This thing moves pretty good.
You are one crazy dude! And that someone that drove something in 109 kmh is ever crazier ;)
awesome! my rieju drac RR -03 had a top speed of 145km/h, that thing was a deathtrap too! 80cc, ported, tk exhaust (modified), 24mm carb, homemade intake, carbonfibre reeds, top racing crank, it was just made to go fast, it was insane!
What gearing?
@@88brderpi20 i dont remember, but it was not that high gearing, it reved really high tho.
@@danielostman5805 i dont really know if thats true that you got 145on that setup🤔 its just that the carb and tk exhaust and 90bibalot goes 150-160
@@88brderpi20 according to the gps it had a top speed of 145, and when we checked with a car it had a top speed of 140. could maybe be a little downhill where we tested with gps, but not much.
with the earlier set up it had a top speed of 120, but that was 75cc, no porting and not the same intake. with a good portjob, the right intake, and a well designed exhaust its not that hard to get that kind of top speed with 80cc. :)
@@danielostman5805 tk is not the best exhaust and 88 with porting and good setup close to 140.. and what 80cc you had
Hey brother, she sounds a bit rough to start with but ya got her leaned out n she turned into a ground pounder!! BLOODY GOOD JOB!!
Putting spokes in wrong sequence is something you only do once. Problem seems to be the descriptions of inside and outside spokes. I've always used spokes going from centre of hub to outside as the 'outside' spokes and from outside of hub inwards as inside spokes.. As long as you fit 'outside' spokes first it generally isn't a problem, providing your not trying to do some custom pattern or have wheels where they are laced differently (usually pre-1960)
BTW, really like Paul Brodie's channel, does some fun stuff with old bikes
True. During this first time I realized why it had to be done in the correct order.
At 23:30 you got the tune close to perfect! That bike will run!
Best poweband I've seen in awhile👍🏻
I can't wait to see the brute force finished
Sweet , nice rip at the end ! She Fly’s !!!
Awesome I'm glad I found this channel.
I’ve ridden minibikes on many roads but that look like the most awesome ride I’ve ever seen good job
I love your videos🔥im from swizerland and a watch all your videos!
I love this project...
I would of loved even more if the engine was mounted higher I.e forming subframe with the chassis downtube
Bloody hell you're brave
Had Derbi Senda one year ago with stage6 77cc cylinder kit on that Rabasa engine and I already miss it. It was real fun
just so you know that mesh is still a restriction, I used similar over the mouth of a T28 turbo(looks similar size). couldnt make more than 19psi of boost (200whp in my application) removed the mesh and boost unlimited. im sure your not up near 200hp but it will obviously have an effect on your jetting
Yes, definitely 👍
Dude you are awesome, but I have to say I've never seen your crazy side, be safe riding fast like that in the rain with those little skinny tires..big balls 😆 🤣 😂 stay safe and keep the awesome videos coming 😀 👍 🙌
Its great to be alive living on the edge like a man and his machine should ,
Your vibration, could it be that the wheels need balancing? that engine sounds great when it come on song. Well done my friend !!! Thank you for posting.
It looks like one of those old board track racers.
Merci pour ce grand moment !
It DOES rip,maybe 65 or 70 miles per hour next time.You Rock,you are Badass man.
OK! All the tuning parameters came together at the 23:00 minute onward... Now your power velocity is pushing the other systems to compete with the Death Trap paradigm! The upward or downward spiral... Only the Creator and/or stuffing maker can make the call. This is an uncharted dimension.
That’s a lot of testicular fortitude. Friggen love it.
That looks properly lethal. Perfect!
Good to see there are some Vikings left in Norge!
I just came home from school thx for uploading
Been exactly here where you are. Currently loving all-metal cored wheels. Less chance of that sprocket destroying your wheels.
i love the sound of that engine at full tilt!! love your vids!
Lacing a wheel is a special skill. Many ways to lace a wheel.
Pretty cool machine! Wet road looked sketchy, I always had problems with moped tires in the rain.
i used to have a 'bretta with the same gearchange. technique is all. #1 when you're ready to change up, press lightly on the clutch lever, to initiate a twist on the shifter. #2 drop throttle #3 flick clutch in and release as you turn the shifter. #4 keep turning the shifter, with fingers off the clutch, and it will drop in to its slot....................
That's humming now! You are a wildman!