Subject: Ed and Jim's performance
From: Paul
Date: 10/2/1999, 2:38 PM
To: zz

X-Mozilla-Keys:                                                                                 
Ed Anderson wrote:


Gross weight at take off on that flight was 1575 lbs, ROC at 90 mph was 700
fpm.  Water Rad thickeness is 3 3/8" thick - GM Air condition condenser
cores canted at approx 30 degree to airflow set back 10" from cowl air
intake opening with fiberglass ducts forcing all captured air through
radiators.

Jim Mosur flew his RV-6 down from Canada on Thursday with Neil Kruiswky.  So
we compared aircraft and tried to account for my lessor performance compared
to his.  With the two of us on board at same climb airspeed he was getting
over 1000 fpm compared to my solo climb of 700 fpm.  My aircraft is approx
120 lbs heavier, but with two in Jims that was more than accounted
for.  I turn approx 100-200 more rpm than he does during the same flight
regime.  His pitch is 74 mine is 72 but as anyone knows comparing pitch
between two different prop makers is not reliable. However, that could
account for my engine turning slight more rpm.   In any case, the cord of
his prop is approx 6 1/4 inches while the chord of my prop is 5 1/8".
Clearly don't know if that would make that kind of difference in
performance, but it was the only thing we could come up with.  I set my
timing differently today and will go out and fly it tomorrow.

Ed Anderson
Matthew NC

 
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