ORIGINAL: soundmaster
Ok i tried a 14x6 apc prop i had and the RPM note increased dramaticly. It also had a ton of power when nose was up. So should i go with a 16x8 for arobatics or should i stay with a 14... the 18x8 sounds like it is too much and it bogs down the motor
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I think that a 14x6 is a bit light for this engine, but you have demonstrated that higher air flow through the carb improves things in that department substantially. Experiment with 16x8 and 17x6 props. That should give you more thrust while maintaining the beneficial high rpms for fuel draw.
My G2300 pulled an 18x8 well, but then we're back to the problems of using a suction fed carburetor. It is time that this old fashioned way of running glow engines went the way of the dinosaurs. Good luck.
Ed Cregger