On Sat, 19 Nov 2005 20:19:15 -0800 (PST) Daniel Weseman
<[email protected]> writes:
> Joe sounds like your having fun and have a fast ship there. How is
> your air intake on the cowl. since the third flight i had a
> intermitent stumble(if thats how to describe it?) at high power ,
> would do it once a flight or so out of the blue and somtimes not at
> all. Carb heat ALWAYS cured it but ive felt it was a effect from the
> air intake so close to the prop(1/2 inch). by pulling carb heat the
> ram air is not in the system. I moved the air inlet and got rid of
> the long scat tube connecting it to the filter box. Ive flown it
> twice and actually picked up 30 or so static Rpm and it seems the
> same on the top end? also its a little smother in climb and the egts
> at high power are almost the same(they were never far off but are
> even better now) I thought if you had ram air your stumble might be
> somthing similar, may be not though stay safe have fun and keep us
> updated Dan
>
Dan
I am not using ram air. The Aerocarb doe snot like it. I am using
air from in the cowl and have carb heat off the exhaust via 2" scat tube.
Like yours it did occur at a high power setting. I can not remember
exactly what the conditions were right now as i was able to log over 2
1/2 hrs at 3 different times this weekend.
The 3100 is running great and I get to places that I wasn't even
going to before I know it.
I have a lot of testing to go yet but here are some early findings
First the equipment:
KR2S with the new airfoil-trigear-- all fairings and paint complete-724#
empty
3100cc corvair aerocarb and just about everything done to the engine that
could be done
58" x 64 Sterba prop
The numbers:
normal climb-90 mph indicated-- 1200'/min
best angle climb-- 80 mph -- 1500'/min
75%power cruise -- 2800 rpm-- 145mph
WOT--3150 rpm--170mph
cruse climb-- 2800 rpm--700'/min
stall power off--55mph indicated
pattern speeds have been 90 downwind--80 on base, 1 notch flaps--75
finial add last 2 notches of flaps--
70 over the numbers and just keep holding the nose up to touch
down.
Total time is 7.5 hours and about 20 landings ( the last 10 could
actually be called landings)
Joe Horton, Coopersburg, PA.
[email protected]
