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In a message dated 12/31/2004 12:50:47 PM Eastern Standard Time,
writes:
> If you don't understand how they work....If you are in cuise flight you
> may set the RPM at 2200. If you increased power with the throttle(different
> control lever than RPM), the RPM of the prop/engine remains the same but the
> propellor increases pitch therfore increaseing drag and therefore maitaining
> RPM(aided y springs and couterweights). Simple as that.
> I reckon a ship could do the same thing.
>
>
My boat, like most Detroit engines, has a variable speed governor. When I
change the throttle setting I am actually changing the governer setting so that
the governer now attempts to hold the engine at the new RPM.
If I should change the setting of my propellor pitch control, the governor
will attempt to keep the rpm constant. If I increase the pitch until the engine
cannot deliver more power the rpm will sag and I will get lots of black smoke
from unburned fuel.
Norm
S/V Bandersnatch
Lying St Augustine
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