ORIGINAL: Franco2fly

Is there a dedicated thread to the 15cc. I'm curious as to what<div>RPM and prop people are settling on? I've gone from Vess 14/6</div><div>to Vess 13x8 but find that needle setting is very critical. I mean</div><div>one click can make a difference in solid run or in flight quit. Is</div><div>This normal?</div>