X-Mozilla-Keys:                                                                                 
Chuck Wrote:

Paul wrote:

Chuck, have you changed that rad scoop on the bottom of the airplane
since I saw it around the time of Arlington?

Not yet because I've been making further gearbox mods and I want to
confirm the results before I make further changes.

Is your airplane still flying? 

Yes, and no. Yes I have had 6 flight (3 hrs total),
but no flights in the last few weeks while I make the gearbox mods. I've gone
to a 4 point spray bar system to oil the sun gear directly. The gears were
beginning to show wear with only 15 hrs of running time (50% under load). 
I was getting a  50-60 deg F rise in oil temp thru the gearbox 
(@ approx 170hp) whereas it should be about 30. As
you know, several people have had longevity problems with these gearboxes at
lesser horsepower, so I'm concerned for when I increase the power.

Have you considered going to six planets? There is an off-the-shelf
source on the ACRE NL web site.

If so measure some air pressures in front of your rads for us. Use
the input to the airspeed indicator (dynamic pressure) as a reference.
I suspect your scoops are not working as well as they might.

I've solved my cooling problems with the current scoops 
(180-200max degF water and oil) by addition of the other coolers 
I previously mentioned. I will install a more aerodynamic
lower scoop soon, but I believe it will primarily reduce drag.

For those new people: Chuck has a turbo three rotor powered Velocity.

Paul Lamar

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