I wonder how much of that 2 MPH is due to bypassing the air filter,
though. On my other plane, carb heat air is "rammed" into a 2-1/2"
duct. But pull carb heat and we know what happens to to RPM, due to
the greater effect of the hot air. Conversely, temp could be the most
noticeable
benefit in externally scooping induction air?
Regards,
Fred F.
Peter van Schoonhoven wrote:
>
> Mooneys from the late sixties had a cockpit control you could activate to
> bypass the air filter and get air from a forward facing cowl opening. Those
> airplanes cruised just about as fast as Europas and the ram inlet gave
> about 2 mph improvement so we would probably benefit about the same. But no
> air filtering, so watch out in smoky, or dusty environments, especially
> take off and landings.
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