I wrote: >I can turn 3200 rpm static and turn it up to 2450 or so > wide open with a 2180cc engine with 8.6:1 compression ratio and 30 > degrees of advance at wide open throttle.
Obviously, top RPM is 3450 or so, not 2450 or so. Also, I should mention that I'm now flying a "52x54" Sterba prop on the 650 pound KR2. As the engine gets broken in, I expect the RPMs to come up a bit more also, maybe 3500 or so. And yes, shortening the 48x52 prop may get you there, but I'd still make absolutely sure that engine was putting out peak power before I took to the sky. Best to get all of this done while this winter, while climb rates and engine cooling are good. I do agree that a Type 1 VW on a heavy KR2S is not advisable, and when you throw in high temperatures and high density altitudes, it may be a "winter-only" airplane. My experience with the Type 1 is that it's "cooling challenged" when compared to the Corvair, mainly because head fin area is very limited. Mark Langford ML at N56ML.com http://www.n56ml.com
