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I think it is generally accepted that Ram Air is good for about 1">>> of
manifold pressure. When you're at altitude, that's a good boost.
For the naive, why is ram air in ice unsafe, but a filtered pseudo ram air
okay? Is it the filter that helps in an icing situation? or something
else?
Matt
I watched my pressures last weekend and at 8,000 and 9,000 ft I had a 1.3" increase in manifold pressure over what the outside atmosphere should have been. I was traveling at 160 kts indicated and between 180 and 190 kts true.
I have a downdraft carburetor and had an RV-4 air filter put on. This oval air filter gives me filtration all of the time. I also feel that the air filter has helped the air enter the carburetor with less turbulence.
Oh, and by the way, both fate and God also help us out of icing conditions.
--
Lorn H. 'Feathers' Olsen, MAA, DynaComm, Corp.
248-478-4300, mailto:lorn@dynacomm.ws
LNC2, O-320-D1F, N31161, Y47, SE Michigan
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