Help!!! OS 32
03-08-2003, 08:05 PM
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Help!!! OS 32
Details:
Rap 30 V1 stock with exception of head which I run with leading edge pitch arms to prevent out of track conditions, OS 32, OS #8, Century 3033 muffler, 15% Cool Power, Pitch range +- 9 degrees. Approx 4 gallons thru motor
Problem:
Engine sags horribly accelerating out of hover. Always has some but is becoming particularily worse. Pulling a simple loop and the engine will sag on the backside when adding pitch and throttle to recover. I have hit the ground twice because of this. I was able the auto out of one but the other caused substantial damage.
Solutions Tried;
Glo plug, fuel, replaced fuel lines, header tank. original head configuration. None of helped thus far. I can't believe the motor is finished after only 4 gallons. Compression is solid, no scoring on piston or sleeve, no evidence of over lean running
Anybody have any thoughts. Help is much appreciated
Rap 30 V1 stock with exception of head which I run with leading edge pitch arms to prevent out of track conditions, OS 32, OS #8, Century 3033 muffler, 15% Cool Power, Pitch range +- 9 degrees. Approx 4 gallons thru motor
Problem:
Engine sags horribly accelerating out of hover. Always has some but is becoming particularily worse. Pulling a simple loop and the engine will sag on the backside when adding pitch and throttle to recover. I have hit the ground twice because of this. I was able the auto out of one but the other caused substantial damage.
Solutions Tried;
Glo plug, fuel, replaced fuel lines, header tank. original head configuration. None of helped thus far. I can't believe the motor is finished after only 4 gallons. Compression is solid, no scoring on piston or sleeve, no evidence of over lean running
Anybody have any thoughts. Help is much appreciated
03-09-2003, 07:42 AM
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Help!!! OS 32
I'll bet your throttle advance is poorly matched to your pitch curve. check out www.raptortechnique.com to see what I'm talking about.
