Brake will hold against full power, but you have to have someone sit on the
tail. We have a brake parking lock, pinched from Jon Tye, (one of the few perks
of being an inspector) just a cam which holds the brake on. Don't know about the
force, my arm isn't callibrated, 20 lbs?
BTW G-KWIP henceforth GK Whip,:-} flew on Tuesday and Thursday. Flies perfectly,
hans and phiet off straight and level. Didn't cool too well at first, oil &
coolant at 85 deg C but CHT 150. :-(. Eventually we diluted the glycol (100%) to
about 70% and the CHT came down to 116 deg at full power climb. 100% glycol is
quite viscous and doesn't conduct as well as water. Also some of the proprietary
inhibitors put a significant oxide layer on the castings which may also affect
cooling, I'm told . Then we had what might be carb icing at full power in the
rain, sounded a bit like fuel starvation from the ground, (don't think it was
Pete Clarke farting) the engine settled down at reduced power. Pete said fuel
flow increased at the time it missfired. No sensible performance figures yet but
rate of climb was about 1100 fpm at 1000lbs and 5000 rpm on the 912.
We are very pleased with the way it's going. BTW bean bags are the best seat
cushions ever! And the lightest.
Graham
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