On Mon, 20 May 2002, Alan B. Pearce wrote:

>>When I said 'vintage spark ignition engine' I meant
>>a model engine from the 1950's or 60's. Engines of
>>this type had their ignition timing adjusted by hand
>>and I have been working on the principle of being able
>>to start the engine at a fixed igniton and throttle setting.
>
>I wonder what weight of flywheel they had. I don't think there is very much
>flywheel on the modern glowplug engine. I suspect that they may use the
>inertia of the flywheel to keep the mass moving until the advance is
>adjusted.

The flywheel was the wooden propeller blades. Nowadays it is smaller
(nylon etc).

Peter

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