Fantastic! Such an honour to be able to learn from someone with such a distinguished career. Thanks Richard for taking part, and thanks to Crispin for putting this together.
Richard is a real treasure. As a Yankee tool maker, I was familiar with all the British names of materials, save for white metal. Great video, Mr. Crispin!
Good stuff, and a great idea to get Mr. Gibbon in front of the camera. I think the most important note was when Richard, with all his experience and education, said he'd soon be taking a course on steel boiler maintenance. Keep soaking up that knowledge, folks, because we know what happens when we stop moving forward...
Not over done by any means, I could sit and watch someone with Richard's depth of knowledge and experience all day. This really was a an excellent presentation.
Great discourse on common engineering materials, turned parts with a steel with added Lead or Sulphur, modified machining steels, would make many hobbyists and machinists smile. This steel is predominantly supplied in rounds. Excellent both, thanks so sharing.
This was just lovely, _MrCrispin._ It amuses me when someone makes a CAD drawing and sends it to a 3-D printer, and think they've really made something.
hey, not all of us hobbyist/makers can have a lathe or mill, the best I can do is Design something new using CAD and print it in a material that suits. its an art-form in itself, its by no means "send it to the printer" and be done with it, there are a lot of things to take into account! Dont Gatekeep making!
Come on, man. Making things is all about thinking of something useful or something you need, looking at the available tools/materials, making a prototype, refining it and re-making it until it's just right. How you get to the finished thing really doesn't matter, it's the piston or the resin chessman that counts. And yes, a really good interview!!
@@ale6242 Well, give him time. Not belittling others (there is never a good reason for it[1]) is a skill some people have to work hard to acquire. Some never make it to the championship. [1] Because diversity is the hero. The times where a single person can learn or master everything are long gone! Imagine that some day we need help in a sector where we thought that the expertise from exactly that guy a half year ago was all wasted love ... So we better work together with respect. That is what brought us humans forward to this point, through all the bad and good times in history! Have fun making ... both, no all of you!:)
An impressive man, bearing the full majesty of Fellow of the Institute of Mechanical Engineers. As a mere Member (I've been called this many times), it was very instructive to hear him speak. Materials are an important part of my work in aviation so thank you very much for making this video. Best wishes, Dean in Oxfordshire.
Great episode. Really interesting. Some fantastic information, what a knowable chap to talk to. Look forward to hopefully more episodes with Richard in.
I really enjoyed material properties during my studies, because it wasn't just about the basic molecular material, the material could be alloyed, heat treated, work hardened, quenched and tempered to change it's characteristics. Addition of carbon, chromium, molybdenum or manganese to mild steel changes it's properties vastly. I suppose that it appealed to my "Engineering Mind" finding a solution to a problem? My intrigue was piqued when we got onto "Exotic Materials" such as Inconel and Titanium and the alloys of these! I suppose this is why I'm not a carpenter? 😅😅😂😅
Our bread and butter material at our shop is 4140. - Always cold rolled execpt when make amendments,,,,but they get stress relieved at 1100F 1 hour per inch. My point is outside of turning a lot better then hot rolled I never noticed the material "walking" and we carry a thousandth or two on the milling machines and a couple tenths on the grinders. I will say that the cold rolled stock we use if annealed, which amounts to stress relieved so that might be the reason I never noticed any movement of a part during machining,,,,,most of the stuff is pretty thick too so that could be a factor. Just for kicks, I going to order a piece of 1/4 x 2 10 carbon CRS and grind off a hundred thousandths off one side in the suface grinder and see how much it moves. Learn something new every day.
Mr Crispin's skills know no bounds - what a great interview, keeping the interviewee on track, explaining stuff a knowledgeable subject like Richard may take for granted. Loved the cutaways back to your workshop. The only failing was it was too short! Oh, and chuckled at "drill raad" - at least you resisted "sadder"
Hello Mr. Crispin, It was an interesting video, thank you... Very pleased to hear that you have made a tour of Richard's workshop video. Take care. Paul,,
What a delightful gentleman Richard is full of enthusiasm and knowledge and still getting a kick out of making things thanks for putting this together Crispin would like to learn more from you both
Here is a fun fact about cast iron, it is impossible to have 5% carbon because if it did have the melting point would be higher than pure iron. Most cast irons have a maximum carbon of 3.5% except for ductile iron which may be 3.7-9%.
Interesting meeting Crispin, the final comment was the gold missing from the materials list in the discussion! Interesting American accent by the way, got a laugh from me even if it did not land across the water lol. Cheers, Jon
The more and more I watch great videos such as this really makes me regret not taking up an apprentice ship in machining\engineering. Now at almost I feel a lot of my working life has been a waste. In saying all that I truly hope the remaining years will be so much better in my little work shop just from the pure enjoyment of working with metal.
When I machine phosphor bronze I always make sure I use a smaller drill and then bore it. Unless you have a controlled feed on a CNC I find the drill likes to wander. We manufacture gun mounts for the army and we have used brass for bearing bushing during the design stages requested by the designer and it wears so quickly on moving parts bronze is so much better.
Thanks for introducing us to Richard with his wide experience in materials. In America black mild steel is known as “hot rolled”. I suppose to differentiate it from “cold rolled”.
loved all the information about what the types of metal is good for, Also Richard is a legend , going on a course at his age to learn more about boilers. Who say's you cant teach an old dog new tricks. Bravo to you Richard.
Thank you Richard and Crispin for this insight into metals. The topic of dezincification was particularly interesting. Also Richard your comment at the end, couldn’t agree with you more, nothing more satisfying than designing, building and using something you have created!
Thank you for bringing us along to hear from a person with such expertise! I never knew about de-zincification, it has ruined many a day for me. It is so lovely to hear from someone like Richard. Please give him my regards.
Thank you, Mr. Crispin, for having Mr. Gibbon and his wisdom in your video. As we say here in the States, every project needs at least one "hairy-eared" engineer on it. The only downside is that now I just have spend the money to get that T-shirt he wore (being hairy-eared myself)!
being near completion of my first engine (Stuart S50 ) I did make my cross rails from Gauge plate , However the cross head is from the brass supplied with the kit . This has set me to thinking that I now need to remake it from Phosphor bronze . It shall be so having listened to your wise words , Thanks and Cheers Ade.
Thanks for a very engaging video. I loved every minute of this. I also had a few wise old sages as teachers when in my early engineering days and the knowledge they share is absolute treasure. Looking forward to the tour of Richard's workshop. I'm wondering if the shaper behind your head is an Alba 1A like mine or the later Elliot 10M version.
Yes, the properties of metals vary extensively so careful thought is paramount when designing any machine, thank you for clarifying those differences, you have a wealth of knowledge that I very much appreciate,,Rick in Alabama (USA) ,SAYS THIS,,Good on ya.
Could you do a similar film on when to soft solder, when to silver solder, when to braze, when to weld, and so on please? Always been making things, and as Richard says, imagining how to make things. That's one the real skills that's hard to gain and one you will never finish adding to. The more you know the more you can do and work out how to do.
Another very informative video for those that are less informed. Here in Australia we have a Boiler Code that we in the Hobby must follow. The Australian Miniature Boiler Safety Commitee or as we know it the A.M.B.S.C. There are 4 codes being Copper, Steel, Duplex and Sub Miniature Boilers. I grew up in the hobby as my Grandfather was heavily involved with it to the extent of being the Technical Representative back in the early 1980's as he was a C Eng, MIE (Aust) for John Lysaght & Australian Iron & Steel. Our code was started in the 1960's to set a standard for the hobby to follow to keep things safe.
Crispin, this video is excellent. Thanks to both of you for the effort. Being new to the model engineering world, I find I have to guard against believing “facts” from my memory that were placed so long ago I can’t recall the sources. Metallurgy is in particular need of reinforcement, so thanks for that!
Thanks Mr C. If I got nothing else out of that discussion the lubrosity of cast iron being used for loco wheels made me chuckle especially when the "experts" at the hobby shops sell them. How insane is that. Thank you and Mr Gibbons for taking the time to put this chat together. Most appreciated. One request. Please get some better microphones for each of you. The level difference between the chat and your personal inserts were very marked. Regards from Canada's banana belt.🤞🇬🇧🤔🕊️🇺🇦🍌🇨🇦👍
A great insight into what to use and where. A lifetime of knowledge. What an excellent video. Hopefully more interviews with Richard in the future Mr Crispin. Regards Kevin
some years ago i was looking for some 5/16×5/16 rolers for a1925 camy Velothis chap i know said to me get some 5/16 silver steel and part the rollers of+a few thou once hardened polllish all over and reduce l to ,312.I did not try this wangle but i can see the point Iactuly found some original Hoffmann rollers ttfn&ty
Wonderfully informative chat. It's great to have the wealth of knowledge from people like Richard recorded in the public domain. For me such content is priceless and is what the internet is all about. Each of us has snippets of knowledge that others may not have come across as we stumble through our lives. So share the gems locked in your head people. Thus ends my rant and I'll put my hobby horse back in the barn. Cheers Eric
Thank you for a excellent discussion. I have many years of education and experience with materials and I picked up a few tid bits and remembered a lot of information that I have forgotten over the years.
What a splendid, informative & entertaining interview. You are very lucky Crispin to have such a wonderful mentor & the obvious respect and friendship you both share was a real pleasure to watch!
The spindle bushings in my 1928 south bend lathes headstock are bronze. They're original and because all the previous owners either lightly used or kept oiled are still within spec..mind you its on its last cap shims so its almost time to replace but not bad for 95 yrs of use eh? :) bronze is amazing stuff.
I enjoy materials science. That was an excellent video. Richard is a highly knowledgeable and accomplished man. You are lucky to count him as a friend and we are blessed to have been afforded a glimpse of his knowledge.
Moustache 4tw. Materials 4tw. Love the interview. The shirt and the correctness. You sir are an excellent example of British politeness. In the best sort of way.
Awesome, had no idea about the drill-rod silver steel connection, and that is hardenable right? Interesting how you use the term free graphite in white cast irons, I thought I was just iron carbide. Have you heard of A 10. It was a steel containing a light carbon content, I think 1.5 or 2, that supossedly had graphite or even graphene structures when heat treated, I wonder how hard it would be to get.
You omitted the most important aspect in the production of bright steels, viz. the black scale from hot rolling is removed by acid etching before cold rolling or, in the case of profiles, cold drawing.
What about using stainless steel crankshafts with bronze bushings? I usually get a pretty good surface finishing in stainless especially after emery cloth (though not of course as good as ground rod).
One dislike I have is the use of brass for parts such as the cab, smoke box, running boards etc. I have built 7 locos and never experienced problems with steel parts rusting given reasonable care. Steel is also much cheaper and takes paint better.
I really enjoyed the video, but I still have a question about silver steel. I know that it is tool steel, which is what drill rod is made from. The thing is that drill rod comes in many “flavors “ such as water hardening (usually W1), oil hardening (usually O1), and a variety of air hardening alloys. Does the term silver steel apply to all these alloys or just to (water hardening) carbon steel?
A very good video Crispin that covered a lot which should be better known. Yes that white metal/Babbit is used as a bearing material, and yes the correct lubrication was mentioned. But what should have been strongly pointed out is the axles or anywhere else that Babbit or any metal including bronze is used as a sleeve type bearing those axles or crankshaft need to float on an oil wedge exactly as it does in every automotive engine. In use with the proper and enough lubrication that oil wedge forms as the parts start to rotate. At that point there is or should be zero metal to metal contact. With too little clearance or with too much, that oil wedge can't properly form and you will have bearing problems.
"If the lubrication is suspect" What a phrase! Excellent Interview Mr C. I always learn something from the old timers. I seem to recall Richard's voice from your talk at York, is that the same fella? (I may have to go look at that again). While not quite there yet at 57, I am rapidly approaching old timer status at a rate that alarms me 🤣. Hopefully I will able impart some of my knowledge of things as eloquently as Richard does when the time comes. One things that stands out, Richard, despite a lifetime of engineering work is going to take a course on steel boilers. Always trying to improve ones knowledge is the hallmark of people who like to build things and never a bad idea. A refresher on material terms was most welcome, however Bright & Black steel was a new one for me. I did know what white metal was simply from watching some of the old LMS shop videos that can be found on You Tube. Long live Richard, thank you sir. Cheers gentlemen.
JUST THE JOB no better feeling when you make something that works , or taking something that somebody has put in the skip ,and you fix it , excellent video keep on learning
Fantastic video. Mr Richard Very-smart-man (can’t remember his surname - sorry) mentioned that wheels could be mild steel. Is that MS for only the centres, with a harder tyre, or was he saying MS for the whole wheel? I would have thought MS would wear poorly, especially if running on MS tracks. Can anyone clarify please?
Hi Mr Crispin Thankyou so much for publishing this and of course all your other videos. They have be invaluable, entertaining and informative. As a fitter machinist (more production maintenance and general machining than full machining) for 30+ years in Western Australia it all started with a mentor name Bob Brown (RIP) who introduced me to model engineering at the age of 12 that started my journey and interest. He started me on a journey to build a "Tich" which I still have the whistle, unfortunately life got in the way and I never completed this. I am however building a Rob Roy and your videos are part of the driving force for this. I live and work in a mining town and the closest model railway is 1200km from me so this is currently a solo project with noone else close by to share advice. That is why your channel is so invaluable. As you discussed in one of your videos things some time get in the way of projects, this I am guilty of this too (Rob Roy was started in 2000) but I always get back to this. Thankyou and keep videos like this being published. It certainly helps. Kind regards Rusty
This was a great video and you have done yet again a great job. I take my hat off to Richard Gibbon for getting in front of the camera and sharing his big pool of Knowledge in steam engine building. This has save me as a potential newbie in doing this hobby from costly material mistakes. Its a real treat to watch you get into the detail on Loco building. It would be great to see Richard again. I looking at building a super simplex 5 inch gauge and what a channel.
Bright mild steel also contains an amount of lead and sulphur, depending on the grade. Basically added to make machining easier. When brazing or silver soldering it is much harder to get a good joint with BMS than with hot rolled steel. The dezincification problem with brass is overcome with the addition of tin. Domestic water taps are made of this DR grade brass. So you could make the what I know as "sockets" out of DR brass and silver solder them to the copper sheeting - if you could find DR brass anywhere. Phosphor bronze derives its good bearing properties from the addition of phosphor and the tin in the bronze forms hard bearing areas in the soft copper matrix. If you ever wanted a harder bronze you could use aluminium bronze which can be heat treated to over 60 Rockwell C and is used in some parts of plastic moulds in place of steel for its greater heat conductivity. Cast iron comes in several grades but the biggest difference is between spheroidal graphite (SG) grade cast irons and grey cast irons with SG irons being somewhat stronger. Meehanite is a USA trade name for one manufacturer's grades of SG iron and over the last half century that name is now in common use to mean SG iron. White metal or Babbit metal is useful as a bearing lining as when rubbing against the journal on start up it has the surface properties of "regenerating" itself until the film of oil builds up to support the journal off the bearing surface. White metal eventually fails by fatigue but can be melted out of a bearing housing, recast and machined and then scraped to fit. Auto engines of course now use disposable half shell bearings for main and big end bearings pre sized to fit. A Production Engineer by profession, I always enjoy videos such as Mr. Crispin's! Richard Gibbon's Tee shirt reads "All Men are Created Equal But The Best Are Engineers In Their Seventies!! At the age of 73 now, that made me chuckle Richard!!!
Fantastic! Such an honour to be able to learn from someone with such a distinguished career. Thanks Richard for taking part, and thanks to Crispin for putting this together.
Richard is a real treasure.
As a Yankee tool maker, I was familiar with all the British names of materials, save for white metal.
Great video, Mr. Crispin!
Good stuff, and a great idea to get Mr. Gibbon in front of the camera.
I think the most important note was when Richard, with all his experience and education, said he'd soon be taking a course on steel boiler maintenance. Keep soaking up that knowledge, folks, because we know what happens when we stop moving forward...
Not over done by any means, I could sit and watch someone with Richard's depth of knowledge and experience all day. This really was a an excellent presentation.
Great discourse on common engineering materials, turned parts with a steel with added Lead or Sulphur, modified machining steels, would make many hobbyists and machinists smile. This steel is predominantly supplied in rounds.
Excellent both, thanks so sharing.
This was just lovely, _MrCrispin._
It amuses me when someone makes a CAD drawing and sends it to a 3-D printer, and think they've really made something.
A great interview with Mr Gibbons.
hey, not all of us hobbyist/makers can have a lathe or mill, the best I can do is Design something new using CAD and print it in a material that suits. its an art-form in itself, its by no means "send it to the printer" and be done with it, there are a lot of things to take into account! Dont Gatekeep making!
Come on, man. Making things is all about thinking of something useful or something you need, looking at the available tools/materials, making a prototype, refining it and re-making it until it's just right. How you get to the finished thing really doesn't matter, it's the piston or the resin chessman that counts. And yes, a really good interview!!
@@ale6242 Well, give him time. Not belittling others (there is never a good reason for it[1]) is a skill some people have to work hard to acquire. Some never make it to the championship.
[1] Because diversity is the hero. The times where a single person can learn or master everything are long gone! Imagine that some day we need help in a sector where we thought that the expertise from exactly that guy a half year ago was all wasted love ... So we better work together with respect. That is what brought us humans forward to this point, through all the bad and good times in history!
Have fun making ... both, no all of you!:)
I was electronic engineering in the ’70s. I’ve started making things recently. This was really good information. Thanks
Very good Mr Crispin, everyday is a schoolday, I learned a lot and enjoyed the video :)
Thank you Mr. Gibbon, for taking time to speak with Chrispin and us as well. Quite enjoyable!
An impressive man, bearing the full majesty of Fellow of the Institute of Mechanical Engineers. As a mere Member (I've been called this many times), it was very instructive to hear him speak. Materials are an important part of my work in aviation so thank you very much for making this video.
Best wishes, Dean in Oxfordshire.
Great episode. Really interesting. Some fantastic information, what a knowable chap to talk to. Look forward to hopefully more episodes with Richard in.
Great video! I enjoyed sitting with you both and just soaking in the knowledge! Thank you!
I really enjoyed material properties during my studies, because it wasn't just about the basic molecular material, the material could be alloyed, heat treated, work hardened, quenched and tempered to change it's characteristics. Addition of carbon, chromium, molybdenum or manganese to mild steel changes it's properties vastly. I suppose that it appealed to my "Engineering Mind" finding a solution to a problem? My intrigue was piqued when we got onto "Exotic Materials" such as Inconel and Titanium and the alloys of these! I suppose this is why I'm not a carpenter? 😅😅😂😅
Our bread and butter material at our shop is 4140. - Always cold rolled execpt when make amendments,,,,but they get stress relieved at 1100F 1 hour per inch. My point is outside of turning a lot better then hot rolled I never noticed the material "walking" and we carry a thousandth or two on the milling machines and a couple tenths on the grinders. I will say that the cold rolled stock we use if annealed, which amounts to stress relieved so that might be the reason I never noticed any movement of a part during machining,,,,,most of the stuff is pretty thick too so that could be a factor.
Just for kicks, I going to order a piece of 1/4 x 2 10 carbon CRS and grind off a hundred thousandths off one side in the suface grinder and see how much it moves.
Learn something new every day.
Yes I'm sure the annealing helps. Let me know how your experiment goes.
An excellent video. The comment, “making things is the most wonderful way of spending time” is so true!
Mr Crispin's skills know no bounds - what a great interview, keeping the interviewee on track, explaining stuff a knowledgeable subject like Richard may take for granted. Loved the cutaways back to your workshop. The only failing was it was too short! Oh, and chuckled at "drill raad" - at least you resisted "sadder"
Fantastic. Please thank Richard for sharing his knowledge. This was a great interview.
Hello Mr. Crispin,
It was an interesting video, thank you... Very pleased to hear that you have made a tour of Richard's workshop video.
Take care.
Paul,,
Drill RAD. Made me laugh.
What a delightful gentleman Richard is full of enthusiasm and knowledge and still getting a kick out of making things thanks for putting this together Crispin would like to learn more from you both
Here is a fun fact about cast iron, it is impossible to have 5% carbon because if it did have the melting point would be higher than pure iron. Most cast irons have a maximum carbon of 3.5% except for ductile iron which may be 3.7-9%.
Well what a wonderful guy the knowledge that Richard has built up is fascinating, thank you Crispin for introducing him. 👴🏻👍
Morning Mr Crispin 🤠 What a fantastic interview & explanation of different metals 🤩
Thanks for the video. Lots of important information provided there. Excellent tip about using cast iron for the wheels. Cheers, Aaron.
Interesting meeting Crispin, the final comment was the gold missing from the materials list in the discussion! Interesting American accent by the way, got a laugh from me even if it did not land across the water lol. Cheers, Jon
You have a nice day now😂
The more and more I watch great videos such as this really makes me regret not taking up an apprentice ship in machining\engineering.
Now at almost I feel a lot of my working life has been a waste.
In saying all that I truly hope the remaining years will be so much better in my little work shop just from the pure enjoyment of working with metal.
When I machine phosphor bronze I always make sure I use a smaller drill and then bore it. Unless you have a controlled feed on a CNC I find the drill likes to wander.
We manufacture gun mounts for the army and we have used brass for bearing bushing during the design stages requested by the designer and it wears so quickly on moving parts bronze is so much better.
Thanks for introducing us to Richard with his wide experience in materials. In America black mild steel is known as “hot rolled”. I suppose to differentiate it from “cold rolled”.
Yes we have the same here. Cheers.
loved all the information about what the types of metal is good for,
Also Richard is a legend , going on a course at his age to learn more about boilers.
Who say's you cant teach an old dog new tricks.
Bravo to you Richard.
Thank you Richard and Crispin for this insight into metals. The topic of dezincification was particularly interesting. Also Richard your comment at the end, couldn’t agree with you more, nothing more satisfying than designing, building and using something you have created!
Thank you for bringing us along to hear from a person with such expertise! I never knew about de-zincification, it has ruined many a day for me. It is so lovely to hear from someone like Richard. Please give him my regards.
Every video is a masterclass. Thanks to you and Richard Gibbon. Cheers !
Very interesting
Important to record for history the experienced engineers (old timers) on camera while they are still active
Thank you, Mr. Crispin, for having Mr. Gibbon and his wisdom in your video. As we say here in the States, every project needs at least one "hairy-eared" engineer on it. The only downside is that now I just have spend the money to get that T-shirt he wore (being hairy-eared myself)!
A riveting video. I learned a lot. I'll be sharing it with my technically inclined buddy.
being near completion of my first engine (Stuart S50 ) I did make my cross rails from Gauge plate , However the cross head is from the brass supplied with the kit . This has set me to thinking that I now need to remake it from Phosphor bronze . It shall be so having listened to your wise words , Thanks and Cheers Ade.
Well up to you! I probably would go to the trouble of remaking it for a stationary steam engine but I'd bear it in mind for next time! Cheers
Lovely job Gentleman thanks for sharing your knowledge with us.
Thanks for a very engaging video. I loved every minute of this. I also had a few wise old sages as teachers when in my early engineering days and the knowledge they share is absolute treasure.
Looking forward to the tour of Richard's workshop. I'm wondering if the shaper behind your head is an Alba 1A like mine or the later Elliot 10M version.
It's an Elliott. Cherrs
What a legend he is. So much experience and skill. I bet some amazing stuff has come out that relatively small workshop. Thanks for sharing!
Yes, the properties of metals vary extensively so careful thought is paramount when designing any machine, thank you for clarifying those differences, you have a wealth of knowledge that I very much appreciate,,Rick in Alabama (USA) ,SAYS THIS,,Good on ya.
Excellent! I've learned a lot from this video! Thank you both, gentlemen!
Great stuff! Love to hear more about this type of subject. Thanks for sharing. Can't wait to get my shop up and running again.
Could you do a similar film on when to soft solder, when to silver solder, when to braze, when to weld, and so on please?
Always been making things, and as Richard says, imagining how to make things. That's one the real skills that's hard to gain and one you will never finish adding to. The more you know the more you can do and work out how to do.
Another very informative video for those that are less informed. Here in Australia we have a Boiler Code that we in the Hobby must follow. The Australian Miniature Boiler Safety Commitee or as we know it the A.M.B.S.C. There are 4 codes being Copper, Steel, Duplex and Sub Miniature Boilers. I grew up in the hobby as my Grandfather was heavily involved with it to the extent of being the Technical Representative back in the early 1980's as he was a C Eng, MIE (Aust) for John Lysaght & Australian Iron & Steel. Our code was started in the 1960's to set a standard for the hobby to follow to keep things safe.
Very enjoyable video many thanks for sharing knowledge 😊
Crispin, this video is excellent. Thanks to both of you for the effort. Being new to the model engineering world, I find I have to guard against believing “facts” from my memory that were placed so long ago I can’t recall the sources. Metallurgy is in particular need of reinforcement, so thanks for that!
Thanks Mr C. If I got nothing else out of that discussion the lubrosity of cast iron being used for loco wheels made me chuckle especially when the "experts" at the hobby shops sell them. How insane is that. Thank you and Mr Gibbons for taking the time to put this chat together. Most appreciated.
One request. Please get some better microphones for each of you. The level difference between the chat and your personal inserts were very marked.
Regards from Canada's banana belt.🤞🇬🇧🤔🕊️🇺🇦🍌🇨🇦👍
A great insight into what to use and where. A lifetime of knowledge. What an excellent video. Hopefully more interviews with Richard in the future Mr Crispin. Regards Kevin
some years ago i was looking for some 5/16×5/16 rolers for a1925 camy Velothis chap i know said to me get some 5/16 silver steel and part the rollers of+a few thou once hardened polllish all over and reduce l to ,312.I did not try this wangle but i can see the point Iactuly found some original Hoffmann rollers ttfn&ty
Wonderfully informative chat.
It's great to have the wealth of knowledge from people like Richard recorded in the public domain. For me such content is priceless and is what the internet is all about. Each of us has snippets of knowledge that others may not have come across as we stumble through our lives. So share the gems locked in your head people.
Thus ends my rant and I'll put my hobby horse back in the barn.
Cheers Eric
Very enjoyable
Love to see a shop tour of his machines and tools
Thank you for a excellent discussion. I have many years of education and experience with materials and I picked up a few tid bits and remembered a lot of information that I have forgotten over the years.
I'll look forward to Richard's workshop tour but I'd also like a tour of his lathe !
What a splendid, informative & entertaining interview. You are very lucky Crispin to have such a wonderful mentor & the obvious respect and friendship you both share was a real pleasure to watch!
The spindle bushings in my 1928 south bend lathes headstock are bronze. They're original and because all the previous owners either lightly used or kept oiled are still within spec..mind you its on its last cap shims so its almost time to replace but not bad for 95 yrs of use eh? :) bronze is amazing stuff.
A great video containing exceptional information.
i was eating pizza when you said "drill raad" ..now im picking pepperoni off my shirt..
Oh dear!
I enjoy materials science. That was an excellent video. Richard is a highly knowledgeable and accomplished man. You are lucky to count him as a friend and we are blessed to have been afforded a glimpse of his knowledge.
Those shaft bearing boxes could maybe be tin plated to get a more suitable friction pair.
Moustache 4tw. Materials 4tw.
Love the interview. The shirt and the correctness. You sir are an excellent example of British politeness. In the best sort of way.
Thanks
Awesome, had no idea about the drill-rod silver steel connection, and that is hardenable right? Interesting how you use the term free graphite in white cast irons, I thought I was just iron carbide. Have you heard of A 10. It was a steel containing a light carbon content, I think 1.5 or 2, that supossedly had graphite or even graphene structures when heat treated, I wonder how hard it would be to get.
Thank you- great information!!! Respect from Texas
You omitted the most important aspect in the production of bright steels, viz. the black scale from hot rolling is removed by acid etching before cold rolling or, in the case of profiles, cold drawing.
Hi Chrispin, I found this video very interesting and enjoyed watching the enthusiasm and skill of you both.
Thanks
Great video, very informative for us novices. Thank you for sharing.
Just visited the Museum last Tuesday, not only are its things a treasure but also the people who curate, restore and maintain those things. Cheers!
What about using stainless steel crankshafts with bronze bushings? I usually get a pretty good surface finishing in stainless especially after emery cloth (though not of course as good as ground rod).
American here - awesome pronunciation of 'drill rod'. You're halfway to a row house in south Boston!.
Very interesting conversation for someone without a formal engineering background, I learnt a lot. Thanks to you both.
One dislike I have is the use of brass for parts such as the cab, smoke box, running boards etc. I have built 7 locos and never experienced problems with steel parts rusting given reasonable care.
Steel is also much cheaper and takes paint better.
I really enjoyed the video, but I still have a question about silver steel. I know that it is tool steel, which is what drill rod is made from. The thing is that drill rod comes in many “flavors “ such as water hardening (usually W1), oil hardening (usually O1), and a variety of air hardening alloys. Does the term silver steel apply to all these alloys or just to (water hardening) carbon steel?
All I can say is I'm not sure! That's one for Google I think
Silver steel is water hardening. See BS1407 for the technical details.
Excellent informative video. Thank you.
A very good video Crispin that covered a lot which should be better known.
Yes that white metal/Babbit is used as a bearing material, and yes the correct lubrication was mentioned. But what should have been strongly pointed out is the axles or anywhere else that Babbit or any metal including bronze is used as a sleeve type bearing those axles or crankshaft need to float on an oil wedge exactly as it does in every automotive engine. In use with the proper and enough lubrication that oil wedge forms as the parts start to rotate. At that point there is or should be zero metal to metal contact. With too little clearance or with too much, that oil wedge can't properly form and you will have bearing problems.
Thank you for bringing us Richard's wisdom.
Over here in the States we generally refer to O1 as drill rod, sometimes d2 but usually its O1 in my exp.
That was a really great interview. Thank you both for bringing it together
What a fascinating engineer to listen to.
Thankyou
Mild steel rods are fine on piston and valve rods. The big danger with stainless in these positions is they pick up too quickly.
Fascinating! thanks for sharing your expertise :)
Great video! I learned a TON! Thanks guys.
"If the lubrication is suspect" What a phrase!
Excellent Interview Mr C. I always learn something from the old timers. I seem to recall Richard's voice from your talk at York, is that the same fella? (I may have to go look at that again). While not quite there yet at 57, I am rapidly approaching old timer status at a rate that alarms me 🤣. Hopefully I will able impart some of my knowledge of things as eloquently as Richard does when the time comes. One things that stands out, Richard, despite a lifetime of engineering work is going to take a course on steel boilers. Always trying to improve ones knowledge is the hallmark of people who like to build things and never a bad idea.
A refresher on material terms was most welcome, however Bright & Black steel was a new one for me. I did know what white metal was simply from watching some of the old LMS shop videos that can be found on You Tube. Long live Richard, thank you sir. Cheers gentlemen.
Hi Yes that is indeed the same Richard who I was conversing with during my talk. Cheers!
Excellent information. Thank you!
Great video....learned a few things. Thanks for doing it
Thank you both for taking the time to make such a comprehensive video on materials!
What, no hat throw-?! Hope ya didnt lose it, tell us it aint so-!! --- AHH-! there it is !!
This was just lovely, MrCrispin.
JUST THE JOB no better feeling when you make something that works , or taking something that somebody has put in the skip ,and you fix it , excellent video keep on learning
I like the lights above your wrenches! 😊
Like all your videos this is very very interesting. Thanks
I love the thought that Richard is going on a boiler maintenance course.
im not a model engineer but found this very interesting thank you both
Very useful video and well put together...
Haha, that was useful and you guys are great. I laughed so hard at "drill rod"
Excellent as usual, this weeks Crispin report is in the can.
Fantastic video. Mr Richard Very-smart-man (can’t remember his surname - sorry) mentioned that wheels could be mild steel. Is that MS for only the centres, with a harder tyre, or was he saying MS for the whole wheel?
I would have thought MS would wear poorly, especially if running on MS tracks.
Can anyone clarify please?
Yes the whole wheel is mild steel
Hi Mr Crispin
Thankyou so much for publishing this and of course all your other videos. They have be invaluable, entertaining and informative. As a fitter machinist (more production maintenance and general machining than full machining) for 30+ years in Western Australia it all started with a mentor name Bob Brown (RIP) who introduced me to model engineering at the age of 12 that started my journey and interest. He started me on a journey to build a "Tich" which I still have the whistle, unfortunately life got in the way and I never completed this. I am however building a Rob Roy and your videos are part of the driving force for this. I live and work in a mining town and the closest model railway is 1200km from me so this is currently a solo project with noone else close by to share advice. That is why your channel is so invaluable. As you discussed in one of your videos things some time get in the way of projects, this I am guilty of this too (Rob Roy was started in 2000) but I always get back to this. Thankyou and keep videos like this being published. It certainly helps.
Kind regards
Rusty
Thanks for your comment
This was a great video and you have done yet again a great job. I take my hat off to Richard Gibbon for getting in front of the camera and sharing his big pool of Knowledge in steam engine building. This has save me as a potential newbie in doing this hobby from costly material mistakes. Its a real treat to watch you get into the detail on Loco building. It would be great to see Richard again. I looking at building a super simplex 5 inch gauge and what a channel.
Thanks
Very informative, thank you.
Bright mild steel also contains an amount of lead and sulphur, depending on the grade. Basically added to make machining easier. When brazing or silver soldering it is much harder to get a good joint with BMS than with hot rolled steel.
The dezincification problem with brass is overcome with the addition of tin. Domestic water taps are made of this DR grade brass. So you could make the what I know as "sockets" out of DR brass and silver solder them to the copper sheeting - if you could find DR brass anywhere.
Phosphor bronze derives its good bearing properties from the addition of phosphor and the tin in the bronze forms hard bearing areas in the soft copper matrix. If you ever wanted a harder bronze you could use aluminium bronze which can be heat treated to over 60 Rockwell C and is used in some parts of plastic moulds in place of steel for its greater heat conductivity.
Cast iron comes in several grades but the biggest difference is between spheroidal graphite (SG) grade cast irons and grey cast irons with SG irons being somewhat stronger. Meehanite is a USA trade name for one manufacturer's grades of SG iron and over the last half century that name is now in common use to mean SG iron.
White metal or Babbit metal is useful as a bearing lining as when rubbing against the journal on start up it has the surface properties of "regenerating" itself until the film of oil builds up to support the journal off the bearing surface. White metal eventually fails by fatigue but can be melted out of a bearing housing, recast and machined and then scraped to fit. Auto engines of course now use disposable half shell bearings for main and big end bearings pre sized to fit. A Production Engineer by profession, I always enjoy videos such as Mr. Crispin's!
Richard Gibbon's Tee shirt reads "All Men are Created Equal But The Best Are Engineers In Their Seventies!! At the age of 73 now, that made me chuckle Richard!!!
Thanks very much for this excellent comment. Cheers.
Thanks for making this video. I loved it
Thank you for teaching a novice brilliant