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1. 09:16 AM - (Jason Edwards)
2. 03:56 PM - Re: sudden high temps (thomas sargent)
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| Subject: | Re: sudden high temps |
Just to finish this episode, I spent several hours scraping loose paint off
the cooling fins using small brushes, dental picks, pipe cleaners with wire
bristles and anything else I could think of. Got a huge pile of paint
chips. I finally got to fly it this morning. This made a definite
improvement. In climb it performed better than it ever has. It seemed like
I could keep it in a 105kt climb indefinitely. Oil temp 190 F, CHT usually
< 400F.
In cruise at 2400rpm with my fixed pitch Catto prop and 40 or 50 F rich of
peak I was able to run at a little lower fuel burn than usual. usually it's
about 8.5gph. This morning it was about 7.8, which I take as a sign of
better cooling. It warmed up when I was motoring around the pattern at 80kt
with full flaps, but no where near as bad as last week.
So I'm pretty sure that remoiving all that paint from the fins had a
benefit. Conditions were not identical - OAT was a couple degrees cooler
and last week there was an inversion layer - it was 80F at 6500 ft - but I
still think it is distinctly better now.
--
Tom Sargent, RV-6A
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