Strange valve train.

Cyborg

Cyborg

Well Known and Active Forum User
VOC Member
If you think the Vincent’s valve train is a little odd… read this….mon Dieu!

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eharris

eharris

Well Known and Active Forum User
VOC Member
A combined rotary and poppet valve. The rotary part acts as a distributor, switching the path from inlet to exhaust, so as you only need one poppet valve in the cylinder head.

See the GRI Hybrid Rotary Valve engine of 1920 on the splendid Douglas Self’s RetroTech website:

Rotary-Valve Internal Combustion Engines.

Douglas Self, rotary valve engines, Minerva, Aspin valve, Cross valve, Froede valve, Wankel valve, Mellors Rotary Valve
douglas-self.com

Apologies in advance if you lose several hours reading round his site!

Cheers,

Ed.
 
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