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.