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Unknown flat-twin engine
Letters to the editor
Hello from a French engineer in Lyon. I bought a barn-find engine some time ago and I've tried since then to identify it. I have no clue what it came from but it is an air-cooled flat-twin engine with manual two-speed (and reverse) transmission. It was equipped with an Ericsson ETM23 magneto and a Solex 26MHG carburettor (but I'm not sure either are original components). The clutch is reverse cone-clutch type.
The only information I have is that 'MaB' is stamped on most gears and shaft. It corresponds to the Malicet et Blin brand which was a big supplier of gears and drivetrain components.
Hello from a French engineer in Lyon. I bought a barn-find engine some time ago and I've tried since then to identify it. I have no clue what it came from but it is an air-cooled flat-twin engine with manual two-speed (and reverse) transmission. It was equipped with an Ericsson ETM23 magneto and a Solex 26MHG carburettor (but I'm not sure either are original components). The clutch is reverse cone-clutch type.
The only information I have is that 'MaB' is stamped on most gears and shaft. It corresponds to the Malicet et Blin brand which was a big supplier of gears and drivetrain components.
Thank you very much for your help.
Regards,
Georges
Originally published April 13th, 2024.
Originally published April 13th, 2024.
Published:
Monday November 18th, 2024
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Comments
Bignon
20 November 2024, 13:51
The bike: Genial Lucifer. I modified it to have a clutch and a gear box. It runs much better now.
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Keith Kuehn
19 November 2024, 22:07
I have no idea, but that home-made motorbike looks wonderful! It would be very neat if we could see all of it... Good job!
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Bignon
18 November 2024, 12:01
I have found in Germany an unknown flat-twin engine. It is an o.h.v. liquid-cooled engine with a big bronze Solex carburetter. If somebody has any information on it, it will be received with thanks. The restored engine is mounted on a home-made bike now.
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Nicolas Arduin
13 April 2024, 18:46
Bonjour,
Je viens de récupérer un moteur de ce style inconnu également. Renseignements bienvenus .
D'avance merci.
---------------------------------------------------
I have just recovered an engine of this unknown style as well. Information would be welcome.
Thank you in advance.
Nicolas
Read more
Je viens de récupérer un moteur de ce style inconnu également. Renseignements bienvenus .
D'avance merci.
---------------------------------------------------
I have just recovered an engine of this unknown style as well. Information would be welcome.
Thank you in advance.
Nicolas
Den Shevchenko
13 December 2022, 22:27
Casting has no designations. Clean it of dirt and take a larger photo. I think I recognize the factory stamp. But it seems to me that this is the first engine that was produced jointly with Germany from 1927 to 1930. Then the Germans used these cooling fins on BMW R71 motorcycles.
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Den Shevchenko
12 December 2022, 21:32
This is an old Soviet Moto/Car motor from the '20s.
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Georges
13 December 2022, 12:10
Thanks for this precious information. Do you have any brand/model idea? What makes you think it is Russian? Regards
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