Glad you did, Mr. Hinton! It's an interesting little power plant but I still haven't figured out how the 4 pistons work in conjunction with each other!
The twostroke was not desighed for the mini but the Austin A20 of which one working prototype was build. There was also a watercooled twostroke which I have seen running in 1986.
I've been watching you and the name changes on your video site and I have to say; what a nice change to listen you go on with all your knowledge. If only the teaches were as interesting as you we'd have a bunch of better mechanics and teachers! Wonderful site keep up the good work. . . . Cheers from Canada!
Many years ago I used to rebuild DKW/Auto union three-cylinder two-stroke engines, to put the pistons in I had a thick broom handle suspended at either end from the ceiling of the workshop, then with two ropes wound around the broom handle spaced to the crankshaft outer bearings I could raise and lower the crankshaft horizontally by turning the handle, this also allowed the crankshaft to rotate, which in turn moved the pistons up or down. With the engine block upside down on the floor with the crank position directly above it, my wife would lower the crank very slowly by turning the broom handle ( which had a piece of steel clamped to it as a lever ) while I fitted one piston at a time into the block, quite a nerve-racking job.
It is an Ehrlich engine. I believe that BMC tried two Ehrlich engines, this one and a water cooled one. They were intended for use in a prototype, lightweight, smaller version of the Austin A30 to be called the A20 Look up chapter 14 of Postwar Baby Austins by Barney Sharratt, Osprey Press.
My first thought as well, seeing those thick fins. If you're running it stationary, you will need fan cooling unless it is only going to go for five minutes or so.
@@mikewilson631 I had a vintage Puch moped that had a beautiful aluminium cowl around the cylinder to direct air from a fan on the end of the crank. It was a very nice design.
You won't regret getting the cataracts done - it gave me a new lease of life - and suddenly the world was in colour again; I'd got so used to seeing a dulled-down view of the world that I'd forgotten how bright the world is!
Brilliant! A fount of knowledge and wisdom. All this, delivered in the most splendid did way! Thanks as always for the content and video’s. Glad the cataract operation went well! Keep on keeping on!
I'm reasonably certain it was Joe Ehrlich who designed the two stroke engine you have, the same man who designed the EMC split singles, ( same as Puch) and of course many Puch motorcycles were split single same as the engine you have. Which is a twin cylinder split single! The beauty of the split single two stroke is it has asymmetric port timing which can minimise charge loss down the exhaust. Joe also tuned some bloody quick two strokes!
thanks for the latest Ivan & co looking forward to the next instalment on the 2 stroke mini , glad to hear you got one of your peepers sorted your soon be able to see into next week be no stopping you , my late farther said after his cataract operation it was like some one had cleaned the very dirty window he was looking out of it really is amazing procedure , take care every one
Interesting workaround that Puch came up with to disconnect and manipulate the inlet and exhaust port timing. The rotary inlet as used by Bridgestone and Kawasaki motorcycles at one time was another design to do the same. Power output can heavily rely on some sort of exhaust expansion chamber feature. It could be helpful to find even a photo of the complete experimental setup if no better data exists. Some have commented, a 4 cylinder. Yes, but only 2 combustion chambers. In their day, Puchs were able to produce superior low rpm torque and a wider power band than most other 2 strokes. As memory serves, Zundap also used the design principle many years ago on a motorcycle rebadged by the mail order giant Sears & Roebuck in the States.
7:45 "at least we will look good" Ivan a bloody genius keeping the great British art of understatement alive. Lost wax holding in rings..out the box thinking. BTW I tried to assemble a Hercules Wankel and you can use cotton sewing thread and candle wax to hold the multitude of bits in place and same thinking, I dont know where it went but its still running!
I think you could take all the amazing engineering out of this channel and it would still be brilliant. Ivan's wittering is priceless. He makes a great tale out of cataracts. I admit, Ivan, that when you disappeared I Googled a couple of times hoping not to find an obit. I was not disappointed. Keep breathing, feller. A proctology story, perhaps... Or just more Mini history. All the best...
You go steady with those peepers young man! I had cataracts done In my forties and they wouldn’t let me drive or do close work for a month, but when they settle down you are in for a treat! Love the channel!. Phil
Another great project looking forward to seeing the whole series. Thank goodness BMC gave up on both those 2 cylinder engines and very sensibly decided to use an A series engine. Without it the mini wouldn't have been the fantastic success it was.
Undoubtedly. If you look through out history, big engine in a small car has always been a winning formula. It helps that the A series is a brilliant engine, driveable and quite dependable.
Hi Ivan, I owned several Puch motorcycles back in the 1970's. the ignition timing was very critical on them, there was a plug in the crankcase and a hole in the crank, when a pin went in through the m5 hole and into the crank the points should just be breaking, incorrect timing or weak mixture (dirty jets or filters) would burn away the edge of a piston and break rings !!! I loved the torque of the engine though, my 175cc Puch would climb hills as if they weren't there
Ivan, apologies if it's been mentioned before,but a few years ago I had a DKW/ Auto union/ Wartburg triple. To refit the pistons I used some Brass shim wrapped around the rings and the ends of the shim material pegged together with some brazing rod. Offer up the pistons in the usual way, the brass shim can be removed by unpegging the ends This is on UA-cam if you search Auto union Munga ..DKW engine build. Keep up the good work.
Fascinating and funny, your use of wax to retain the rings reminds me that many machinists use Superglue for temporary fixing, ie to attach a part to a fixture in a lathe. When they want to detach the part they just heat it.
Hi Ivan I've just had my eyes done 15 min operation, 6weeks 4 times a day for the eye drops that is the worst bit .That engine looks interesting , if I remember correctly DR Joe Ehrlich was the Puch man his company was E M C at Southall . Cheers
Well done Ivan another great introduction to a very interesting project , Will look forward to seeing how the four piston set-up works, good camera work, keep safe and good luck👋
Thank you for making these incredibly interesting, informative, entertaining and educational videos. They are some of the best on on UA-cam! Keep up the good work Ivan and team.
Hi! I’ve been reading a book which mentions this engine. It comes from a pre-war Germany and the two piston design was a way of effectively supercharging the two stroke, before a Mr Walter Kaaden used pressure waves and resonance used in the expansion chamber exhaust to do a similar job. The engine design was referred to as the Ladepump. (which Google translates to Charge Pump) Pre-war Germany was a hive of internal combustion wizardry. I really look forward to seeing the engine go together, I didn’t know any of this actually existed! Congrats on the eye operation
50 years ago I had a Sears motorcycle, made by Puch. it was a 2 cyl. single or "twingle". not a great bike but it got me around. interesting part of 2 stroke history.
Ivan I love your cataract story! I had the same a couple of years ago - it is almost miraculous what can be done nowadays, I did find high-contrast lighting changes, like into tunnels, to be bothersome, so I do suggest you keep a pair of sunglasses handy. All the best! Now to watch the rest of the movie..... Mike
Always happy to see a two stroke Ivan, of course it will need Tiger Seal! You're not far from me at Thame, I'm near Wallingford. Good luck with the other peeper. You'll be 20/20 when they're done. Best wishes, Dean at Retromeccanica.
I have read that it was Ralph Lucas in the UK that designed the first split single engine in 1905 and was used in I am assuming was a prototype car after this it was the turn of the Italian Alberto Garelli to patent one in 1911, Garelli later went on to form Garelli motorcycles which used the split single on the road and in road racing, Trojan (UK) then reinvented the type in 1913. After the first world war an Italian engineer, Giovanni Marcellini, arrived at Puch with the intention of winding the business down instead he designed another iteration of the split single which debuted in 1923 in the form of the Puch LM racing motorcycle.
A typical two stroke uses the front top edge covering and uncovering the exhaust port to establish exhaust timing while the lower rear edge of the piston controls the air/fuel flow timing into the crankcase. Since both functions are established by the piston, the intake and exhaust timing are coupled. With the two piston design, the front of one piston controls exhaust timing while the rear of the second piston controls intake timing. So where’s the trick? Note that the crank pins for each piston are offset slightly which in turn alters the intake/exhaust timing relationship. As I mentioned in a previous post a rotary intake valve disk mounted on the end of the crank can accomplish the same. The drawback - a very wide engine. Reed valves can do the same, but they were prone to breakage with the broken bits being drawn into the crankcase. A bad deal. In the early 70s Yamaha introduced a reliable reed valve engine which reset the clock in two stroke performance. Their engines were legendary with 350cc engines often dominating in the 750cc class
Ear olde 'un! Thinking about the 2 stroke engine and its basic form, what are your or Johns plans for keeping the little bleeder kool? With four barrels, it will become very warm very quickly without forced cooling. Especially if it is running as a stationary engine in a frame. I think you really should build it up with a view to putting it in your mini. So you can report on how things may have turned out at the end of the 50's. That would be extra special as so far as I know, it has yet to be done. I will allow you to give me a slap sooner than you may think. But I worn you, bring a step ladder! Bw Mike the Barchetta driver.
Make a see through head to allow a visual of the combustion! Use a high speed camera to see exactly why it's firing through the carb,! A block of aluminum with a block of acrylic should do it, just roughly get the combustion chamber cut through the aluminum, then cover with acrylic about 20-25mm thick. Maybe make a steel retainer to spread the clamping force. Use any spark plug, it just a wood screw thru the acrylic to arc on the aluminum. It could show something no one would ever thought of!
This was Interesting he’s definitely knowledgeable and humble too. Also really enjoyed hearing about his life, it was very pleasant and quite charming so I immediately subscribed. P.S. Good deal having your eyes squared away, glad all is well. Take care and have a good day.
Mini is a red herring... This engine was developed circa 1954 for a lightweight version of the Austin A30, known as the A20, that never progressed beyond the prototype stage...
Hi Re: piston rings, if you can find some old cast iron drainpipes the correct size you won't get better because it's weathered. That's what hepolite wellworthy used.
Really funny, spend £600 on new peepers and can't find them. Seem to remember reading "Grapes of Wrath" and if I remember correctly Tom used copper wire (piano) to squeeze the rings. Best of luck with second surgery. I'm going next month to have mine cleaned up after 2 yrs.
That's why I didn't see any updates recently, the channel has changed name. But good to be back and subbed now, and this engine looks to be another very interesting one. Can you imagine a Mini sounding like a Trabant? Hééng ting ting.
Mini is a red herring... This engine was developed circa 1954 for a lightweight version of the Austin A30, known as the A20, that never progressed beyond the prototype stage...
Sorry to keep bothering you, but also back in the day, they probably used a 16 to 1 ratio of normal 30 wt to gas. May not need to use 30 wt but i would run 16 to 24 to 1 with a modern 2 stroke oil. Metalurgy and it being prototype, clearances may not have been optimized
Love watching your garage show, I'm making a 2 stroke engine of my own design. It's a 500 cc horizontally opposed twin, a wet sump and it's olied like modified four stroke so it doesn't smoke and runs on straight petrol but I haven't finished it yet so I don't know if my idea works, I just picked up the pistons of my own design, I've made a crankshaft, conrods, I need 75 mm diesel sleeves and rings, You could make my engine in a week, it's much more simple than the 2 stroke that your working on, If I get it going I'll send you a video, no other engine looks like mine,
It might be an idea to insert the pistons with the engine inverted and lower the ends of the crankshaft into position. It's going to test your ingenuity either way.
The geometry on that crankshaft must be really weird - can we have a look at in the next episode please? (I found a handful of Puch videos but they didn't say a lot either).
I know the thing about rubbish opticians, I've currently got the worst pair I've ever had that keep falling into piles of swarf 😡 We'll, what an interesting engine project! I'm in the process of building my 270° offset, short stroke Norton 'Domiracer' engine. I'm trying to figure out how I can make a set of alloy barrels. I hadn't seen your channel for a bit in my UA-cam thing and I'm glad I found the new title.
I can relate to your glasses fiasco Ivan, I've just gone through the same thing but I only lost 130 quid not 600! 2 stroke Mini well I never knew that, this will be interesting.
Having just broken many piston rings trying to assemble a Riley 9 engine any tips would be greatly appreciated! And after your last mention of Tiger Seal I looked for it here in NZ but have had no luck yet. All the local piston ring makers have stopped now it seems. The last place I talked to said they had an old bloke who used to come in and do just that. He stopped doing it and they said it's no longer worth trying to train someone younger up to do it. Every time I broke a ring I had to order more from the UK and wait....
I was the bloke at the HLR Brooklands winter lunch that pestered Ivan to do a series on rebuilding the 2 stroke Mini engine .
Glad you did, Mr. Hinton! It's an interesting little power plant but I still haven't figured out how the 4 pistons work in conjunction with each other!
Good for you!
There should also be crankshaft seals between the 2 crankshaft chambers
". . . and probably had a lot to do with accountants." Truer words were never spoken. Can't wait to hear that little engine sing!
The twostroke was not desighed for the mini but the Austin A20 of which one working prototype was build. There was also a watercooled twostroke which I have seen running in 1986.
The water cooled version is on display at the British Motor Museum at Gaydon... 😉
I've been watching you and the name changes on your video site and I have to say; what a nice change to listen you go on with all your knowledge. If only the teaches were as interesting as you we'd have a bunch of better mechanics and teachers! Wonderful site keep up the good work. . . . Cheers from Canada!
Ivan you sir are a gem..... I could listen to your stories all day......
Many years ago I used to rebuild DKW/Auto union three-cylinder two-stroke engines, to put the pistons in I had a thick broom handle suspended at either end from the ceiling of the workshop, then with two ropes wound around the broom handle spaced to the crankshaft outer bearings I could raise and lower the crankshaft horizontally by turning the handle, this also allowed the crankshaft to rotate, which in turn moved the pistons up or down. With the engine block upside down on the floor with the crank position directly above it, my wife would lower the crank very slowly by turning the broom handle ( which had a piece of steel clamped to it as a lever ) while I fitted one piston at a time into the block, quite a nerve-racking job.
It is an Ehrlich engine.
I believe that BMC tried two Ehrlich engines, this one and a water cooled one. They were intended for use in a prototype, lightweight, smaller version of the Austin A30 to be called the A20
Look up chapter 14 of Postwar Baby Austins by Barney Sharratt, Osprey Press.
My first thought as well, seeing those thick fins. If you're running it stationary, you will need fan cooling unless it is only going to go for five minutes or so.
@@mikewilson631 I had a vintage Puch moped that had a beautiful aluminium cowl around the cylinder to direct air from a fan on the end of the crank. It was a very nice design.
You won't regret getting the cataracts done - it gave me a new lease of life - and suddenly the world was in colour again; I'd got so used to seeing a dulled-down view of the world that I'd forgotten how bright the world is!
Ivan, your videos are a total joy...
Thank you, sir!
Brilliant! A fount of knowledge and wisdom. All this, delivered in the most splendid did way! Thanks as always for the content and video’s. Glad the cataract operation went well! Keep on keeping on!
I'm reasonably certain it was Joe Ehrlich who designed the two stroke engine you have, the same man who designed the EMC split singles, ( same as Puch) and of course many Puch motorcycles were split single same as the engine you have. Which is a twin cylinder split single! The beauty of the split single two stroke is it has asymmetric port timing which can minimise charge loss down the exhaust. Joe also tuned some bloody quick two strokes!
Glad you have had a good result with the cataract surgery.
Looking forward to hearing this one scream!
Congratulations on the cataract surgery! I can't wait to see you put this engine together, it's the most unusual thing I think I've ever seen.
thanks for the latest Ivan & co looking forward to the next instalment on the 2 stroke mini , glad to hear you got one of your peepers sorted your soon be able to see into next week be no stopping you , my late farther said after his cataract operation it was like some one had cleaned the very dirty window he was looking out of it really is amazing procedure , take care every one
Interesting workaround that Puch came up with to disconnect and manipulate the inlet and exhaust port timing. The rotary inlet as used by Bridgestone and Kawasaki motorcycles at one time was another design to do the same. Power output can heavily rely on some sort of exhaust expansion chamber feature. It could be helpful to find even a photo of the complete experimental setup if no better data exists. Some have commented, a 4 cylinder. Yes, but only 2 combustion chambers. In their day, Puchs were able to produce superior low rpm torque and a wider power band than most other 2 strokes. As memory serves, Zundap also used the design principle many years ago on a motorcycle rebadged by the mail order giant Sears & Roebuck in the States.
7:45 "at least we will look good" Ivan a bloody genius keeping the great British art of understatement alive. Lost wax holding in rings..out the box thinking. BTW I tried to assemble a Hercules Wankel and you can use cotton sewing thread and candle wax to hold the multitude of bits in place and same thinking, I dont know where it went but its still running!
First class again such great stories and priceless knowledge 👍
Had a cataract done last November all good and have my other eye done next Thursday. Had to wear glasses all my life and now I don't, amazing!
I'm o happy those old boys got you to start this job it's the one I've been waiting for
I think you could take all the amazing engineering out of this channel and it would still be brilliant. Ivan's wittering is priceless. He makes a great tale out of cataracts. I admit, Ivan, that when you disappeared I Googled a couple of times hoping not to find an obit. I was not disappointed. Keep breathing, feller. A proctology story, perhaps... Or just more Mini history. All the best...
Looking forward to this rebuild, especially using the wax. Glad the eye operation went well. See you 🤣🤣 in the next one. 👍👍
Ivan the "Wizard" of engines and good old fashioned motor engineering.
More brilliant knowledge/entertainment from Ivan. I had the same thing happen with my eyes and Specsavers worked wonders when others failed.
You go steady with those peepers young man! I had cataracts done In my forties and they wouldn’t let
me drive or do close work for a month, but when they settle down you are in for a treat! Love the channel!.
Phil
You look like just an old guy who is feeding pigeons in the park - but you are a Genius! Greetings from Austria, where Puch was established.
Brilliant! I've been looking forward to this project. Thanks Ivan.
Another great project looking forward to seeing the whole series.
Thank goodness BMC gave up on both those 2 cylinder engines and very sensibly decided to use an A series engine. Without it the mini wouldn't have been the fantastic success it was.
Undoubtedly. If you look through out history, big engine in a small car has always been a winning formula. It helps that the A series is a brilliant engine, driveable and quite dependable.
@@johnpearson492 Yes.
Great to see you back Ivan, we missed you! Great vid and looking forward to the wax trick.
Hi Ivan, I owned several Puch motorcycles back in the 1970's. the ignition timing was very critical on them, there was a plug in the crankcase and a hole in the crank, when a pin went in through the m5 hole and into the crank the points should just be breaking, incorrect timing or weak mixture (dirty jets or filters) would burn away the edge of a piston and break rings !!! I loved the torque of the engine though, my 175cc Puch would climb hills as if they weren't there
that is probably the cure , excellent
Thanks for the ideas and inspiration. I can't wait for the next episode.
Yay! An Ivan video always makes the day good.
Ivan, apologies if it's been mentioned before,but a few years ago I had a DKW/ Auto union/ Wartburg triple. To refit the pistons I used some Brass shim wrapped around the rings and the ends of the shim material pegged together with some brazing rod. Offer up the pistons in the usual way, the brass shim can be removed by unpegging the ends
This is on UA-cam if you search Auto union Munga ..DKW engine build.
Keep up the good work.
Brilliant Video Ivan ( As usual). love the story of the glasses as I had an identical story. Robbing sods.
Two good tips in this episode. I wish I could attend a Lotus Seven club event sometime, I have a 1958 Lotus Seven series 1.
Fascinating and funny, your use of wax to retain the rings reminds me that many machinists use Superglue for temporary fixing, ie to attach a part to a fixture in a lathe. When they want to detach the part they just heat it.
Hi Ivan I've just had my eyes done 15 min operation, 6weeks 4 times a day for the eye drops that is the worst bit .That engine looks interesting , if I remember correctly DR Joe Ehrlich was the Puch man his company was E M C at Southall . Cheers
Well done Ivan another great introduction to a very interesting project , Will look forward to seeing how the four piston set-up works, good camera work, keep safe and good luck👋
Brilliant , I could listen to Ivan for hours.
Very professional looking video, switching cameras. Excellent and interesting, as always. Thank you
Well done Ivan another great episode- Regards Australia
Thank you for making these incredibly interesting, informative, entertaining and educational videos. They are some of the best on on UA-cam! Keep up the good work Ivan and team.
Hi! I’ve been reading a book which mentions this engine. It comes from a pre-war Germany and the two piston design was a way of effectively supercharging the two stroke, before a Mr Walter Kaaden used pressure waves and resonance used in the expansion chamber exhaust to do a similar job. The engine design was referred to as the Ladepump. (which Google translates to Charge Pump) Pre-war Germany was a hive of internal combustion wizardry. I really look forward to seeing the engine go together, I didn’t know any of this actually existed! Congrats on the eye operation
50 years ago I had a Sears motorcycle, made by Puch. it was a 2 cyl. single or "twingle". not a great bike but it got me around.
interesting part of 2 stroke history.
Ivan
I love your cataract story! I had the same a couple of years ago - it is almost miraculous what can be done nowadays,
I did find high-contrast lighting changes, like into tunnels, to be bothersome, so I do suggest you keep a pair of sunglasses handy. All the best!
Now to watch the rest of the movie.....
Mike
excelent project guys
Always happy to see a two stroke Ivan, of course it will need Tiger Seal! You're not far from me at Thame, I'm near Wallingford. Good luck with the other peeper. You'll be 20/20 when they're done.
Best wishes, Dean at Retromeccanica.
Excellent, looking forward to seeing it run.
A good laugh at 4:25, 35 original replica cars.😂
Reminds me of my old Sears Alstate 2-stroke (Puch) when I was a kid in about 1968.
I have read that it was Ralph Lucas in the UK that designed the first split single engine in 1905 and was used in I am assuming was a prototype car after this it was the turn of the Italian Alberto Garelli to patent one in 1911, Garelli later went on to form Garelli motorcycles which used the split single on the road and in road racing, Trojan (UK) then reinvented the type in 1913.
After the first world war an Italian engineer, Giovanni Marcellini, arrived at Puch with the intention of winding the business down instead he designed another iteration of the split single which debuted in 1923 in the form of the Puch LM racing motorcycle.
The artist Claude Monet had one of the first cataract operations. He must have been brave.
Great vid Ivan, thankyou................glad ya eyes are ok
That looks really intriguing with the four tiny pistons . Looking forward to seeing how that works in practice.
A typical two stroke uses the front top edge covering and uncovering the exhaust port to establish exhaust timing while the lower rear edge of the piston controls the air/fuel flow timing into the crankcase. Since both functions are established by the piston, the intake and exhaust timing are coupled. With the two piston design, the front of one piston controls exhaust timing while the rear of the second piston controls intake timing. So where’s the trick? Note that the crank pins for each piston are offset slightly which in turn alters the intake/exhaust timing relationship. As I mentioned in a previous post a rotary intake valve disk mounted on the end of the crank can accomplish the same. The drawback - a very wide engine. Reed valves can do the same, but they were prone to breakage with the broken bits being drawn into the crankcase. A bad deal. In the early 70s Yamaha introduced a reliable reed valve engine which reset the clock in two stroke performance. Their engines were legendary with 350cc engines often dominating in the 750cc class
@@myrlstone8904 interesting - thanks for the explanation 👍
it.. the type.. was termed a Twingle.. twin cylinder single
Ear olde 'un! Thinking about the 2 stroke engine and its basic form, what are your or Johns plans for keeping the little bleeder kool? With four barrels, it will become very warm very quickly without forced cooling. Especially if it is running as a stationary engine in a frame. I think you really should build it up with a view to putting it in your mini. So you can report on how things may have turned out at the end of the 50's. That would be extra special as so far as I know, it has yet to be done.
I will allow you to give me a slap sooner than you may think. But I worn you, bring a step ladder! Bw Mike the Barchetta driver.
4:51 "He's got a very special pooch, and he looked straight at it"
For a moment, I thought Ivan was talking about a dog.....
Make a see through head to allow a visual of the combustion! Use a high speed camera to see exactly why it's firing through the carb,! A block of aluminum with a block of acrylic should do it, just roughly get the combustion chamber cut through the aluminum, then cover with acrylic about 20-25mm thick. Maybe make a steel retainer to spread the clamping force. Use any spark plug, it just a wood screw thru the acrylic to arc on the aluminum. It could show something no one would ever thought of!
Great stories as always. Thanks! Oh, and the audio is a lot better now.
Greatly looking forward to this series.
This was Interesting he’s definitely knowledgeable and humble too. Also really enjoyed hearing about his life, it was very pleasant and quite charming so I immediately subscribed. P.S. Good deal having your eyes squared away, glad all is well. Take care and have a good day.
Fascinating engine. I just knew you would need some Tiger Seal.
They look like a pair of Puch split singles on a common block, if they are, rings shouldn't be to hard to obtain
Looking forward to this! It's going to be interesting, to say the least.
Be nice fitted in the mini. Like to hear it going by
Mini is a red herring... This engine was developed circa 1954 for a lightweight version of the Austin A30, known as the A20, that never progressed beyond the prototype stage...
All good stuff.
Thanks.
Now you guys just need to construct half a mini to try these engines out in, especially for the two cylinder engine!
Knowing how powerful 2-strokes can be, I expect this engine might have more poke than the old 850 engines!
Well done with your eyecare. I have been looking out for you next video with considerable anticipation.
Excellent stuff Ivan. Really interesting.
Hi Re: piston rings, if you can find some old cast iron drainpipes the correct size you won't get better because it's weathered. That's what hepolite wellworthy used.
ill watch this BEFORE christian tries to get it taken down this time...
Very good to see see another video. Is the Salmson to be "done" alongside the two stroke or will it follow afterwards?.
Good to see a new episode Ivan,do you think the piston ring was broken when they first assembled the engine ?
My ears always ring, and it good hearing from ya.carry on
Oh right! Nice engine Ivan.
Very good video. Thanks.
Really funny, spend £600 on new peepers and can't find them. Seem to remember reading "Grapes of Wrath" and if I remember correctly Tom used copper wire (piano) to squeeze the rings. Best of luck with second surgery. I'm going next month to have mine cleaned up after 2 yrs.
I just finished a Puch 250 Twingle
It looks like Alan Milliyard got his hands on yours!
Have a look at outboard motor ring clamps 👍
That's why I didn't see any updates recently, the channel has changed name.
But good to be back and subbed now, and this engine looks to be another very interesting one.
Can you imagine a Mini sounding like a Trabant? Hééng ting ting.
Mini is a red herring... This engine was developed circa 1954 for a lightweight version of the Austin A30, known as the A20, that never progressed beyond the prototype stage...
Sorry to keep bothering you, but also back in the day, they probably used a 16 to 1 ratio of normal 30 wt to gas. May not need to use 30 wt but i would run 16 to 24 to 1 with a modern 2 stroke oil. Metalurgy and it being prototype, clearances may not have been optimized
A brilliant fascinating video
You should fabricate a set of expansion chambers for it, not just a set of exhaust pipes.
You should try to turn the heads so the spark plugs are on the first piston to go up.
Are the sleeves long enough to turn a lead in taper for the pistons below the swept area? The pistons look particularly long!
Love watching your garage show,
I'm making a 2 stroke engine of my own design.
It's a 500 cc horizontally opposed twin, a wet sump and it's olied like modified four stroke so it doesn't smoke and runs on straight petrol but I haven't finished it yet so I don't know if my idea works, I just picked up the pistons of my own design, I've made a crankshaft, conrods,
I need 75 mm diesel sleeves and rings,
You could make my engine in a week, it's much more simple than the 2 stroke that your working on,
If I get it going I'll send you a video, no other engine looks like mine,
It might be an idea to insert the pistons with the engine inverted and lower the ends of the crankshaft into position. It's going to test your ingenuity either way.
The geometry on that crankshaft must be really weird - can we have a look at in the next episode please? (I found a handful of Puch videos but they didn't say a lot either).
I know the thing about rubbish opticians, I've currently got the worst pair I've ever had that keep falling into piles of swarf 😡
We'll, what an interesting engine project! I'm in the process of building my 270° offset, short stroke Norton 'Domiracer' engine. I'm trying to figure out how I can make a set of alloy barrels.
I hadn't seen your channel for a bit in my UA-cam thing and I'm glad I found the new title.
if the flote in carby is to low a tow strock will back fir Trev
Interested to know how the 2 stroke cycle works with the two pistons? Its not for example like a motorcycle two stroke?
Hi love your Chanel love the way you solve problems , bit like myself ( I love tiger seal to )
Mr Crispin made a couple of youtube videos about making piston rings, they were for a steam engine though.
I can relate to your glasses fiasco Ivan, I've just gone through the same thing but I only lost 130 quid not 600! 2 stroke Mini well I never knew that, this will be interesting.
Going to do the math and make some trick expansion chambers for the exhaust?
Lovely about the eyes. All the better for driving fast. ;-)
What a great bloke
Gday mate , thats an entertainin show , im definitely guna subscribe. Lookin forward to it cheers
It appears to have a pressed together crankshaft
Can’t wait to see that running 👌🏻😎
Having just broken many piston rings trying to assemble a Riley 9 engine any tips would be greatly appreciated! And after your last mention of Tiger Seal I looked for it here in NZ but have had no luck yet. All the local piston ring makers have stopped now it seems. The last place I talked to said they had an old bloke who used to come in and do just that. He stopped doing it and they said it's no longer worth trying to train someone younger up to do it. Every time I broke a ring I had to order more from the UK and wait....
Welcome to the cataract "renovation" brotherhood!