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Author Topic: M91 water cooled vertical H&M. A recap.  (Read 751 times)

Raphael

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Re: M91 water cooled vertical H&M. A recap.
« on: March 30, 2022, 12:27:36 pm »
Bonjour,
After a few moments of use, the crankshaft had taken some play and especially the flywheels no longer held on the crankshaft, so we improved this engine by replacing its worn needle bearings with shouldered bronze rings and made small flats on the crankshaft so that the flywheel retaining screws can be housed there.
In addition, we raised the gas tank by 15mm to help the carburettor work.
Besides this, I have successfully tested Alkylate 2-stroke gasoline.
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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
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