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Like Dennis I am
having to throttle back and reduce boost after reaching pattern altitude. Flight
testing this week showed I can stabilize my oil temp at 220F at 130 mph, 6400
rpm and 30" MP. Air Delta T after my radiators averaged 81F. This
power setting gives a 600 fpm climb and about 185-190 HP. Not very impressive
for a RV10. My initial climb out was around 1000-1250 fpm with OAT at 95F.
Water temp stabilized at 200F. My oil to water exchanger was
transferring 43F to the water.
My total inlet area
is 58 sqin and 21% of core face. The numbers indicate that opening my inlet area
to 68 sqin or 25% should allow me to cool my full net 238 HP. Before
starting major fiberglass work at 102 F I am thinking of testing a super fine
mist on the radiators. I would like to see what my oil temps would be if I
can drop the water temp by 10-20 degrees. The pump information attached is
a 15 bar pump and meets the specification for continuous use and is safe to run
dry. It's an espresso machine type pump but does not have on\off time
limitations. Other pumps like his have a 1/1 or 2/1 On/Off in minutes for
cooling. If lowering my water temps to 180-185F has a positive effect on
oil temps then I will open my radiator duct this fall when it's cooler. Besides,
I have another test for this pump. I don't have an intercooler and having a 1
pound 15 bar pump will tempt me to test manifold water injections after my super
charger.
Bobby
RV-10 SC
Renesis.
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