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On Monday, April 18, 2005, at 05:24 PM, George Lendich wrote:
Hi Ernest, one assumption you make that I will throttle back for
cruise, is probably not true. At least I have seldom done so with my
Continental powered Tailwind. I plan to take off full throttle and
cruise right around 6000 rpm which is the sweet spot (lowest bearing
load) for the 13B. But your point about the complexity of the
switchable intake is well taken. I prefer the idea of filtered ram
air and am going to see I can fit it under the cowl. It is amazing that
we have been able to talk ourselves into supplying unfiltered air at
all. Lot of rationalizing on that one. I am as guilty as anyone else.
BTW, a few months ago I proposed the filtering ram air on the other
list and was told that filters and ram air did not go together. I gave
it up at that time but here we are again. Jerry
Jerry,
Am I wrong in thinking that a ram intake will force air through a filter?
George ( down under)
I am betting on it George. Seems logical, but pressure loss across the filter was the concern. PL said the pressure loss would negate the ram air effect. I think that is a little strong. I imagine there will be some performance degradation but not too much. On the positive side there is Bill Jepson's report that filtered ram air is being utilized on motorcycles with good results. As someone else has noted, protecting the engine is worth a few hp. Jerry
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