Speaking
of comparisons, Ed, I am using the 68/74 prop that Jim Mossur sold
me. I know that you had it on your plane at one time. Do you
by chance recall what your static RPM was with my prop? I am only getting
4600 at 30"MAP which I fear is going to lead me to needing a fair amount of
boost just to match n.a. performance. But maybe those extra 2" of pitch
are slowing it down on the ground and it will be just right with some
boost (yea right :-)
Dave
Leonard
Since Tracy and I had identical props by the same maker 68/72 and the
same model engine 90 Turbo II, both with high compression rotors, we were about
as identical as could get on engine/prop. Oh, yes, our intake systems were
very similar although not identical. We both would get a nominal 5200 rpm
static (on cold mornings due to the EDDIE effect my static would go as high as
5600-5800 rpm). In my 120 mph (TAS) WOT climbout I normally would
get from 5600-5800 (depending on OAT). So if you are not getting at least
5000 static, you have some tuning to do.