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Old 11-28-2020, 12:07 AM
charosenz's Avatar
charosenz charosenz is offline
Join Date: Aug 2009
Location: Longview, Wash
Posts: 536
Default hard climb info on PSRU

I did some hard climb tests today.

Normally in level cruise the engine/gearbox seems to settle in best at 4500RPM and depending on altitude about 25" of MAP. The gearbox stays about 190-195F

During hard climbout after take off at about 35" MAP and 4800rpm, about 1000FPM.....the gearbox rose slowly to about 225F when I had reached about 7000 ft. I had to level off to let it cool off. OAT was about 45F MSL and about 32F at 10K.

When I reduce the climb to about 500fpm the box stayed at about 200F.

I have not added my second blast tube to the top of the gearbox yet, but I absolutely will do that on the next rainy day I cannot fly.
Charlie Rosenzweig
RV6A - Honda engine. Now flying
2020 Dues paid
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