RE: Sig Wonder
I have a couple Cyclon .15's that are piped and turn up in the mid 30,000's. They have to run hand layed glass or carbon props. Wood or plastics would explode. I have a few nelsons as well that are the same story. My FAI one turns 42,000. no nitro. 80% methanol & 20% castor. It's for F3d pylon. Have it on a fiberglass/carbon delta wing like a Diamond Dust. They have no carbs. Huge venturi. They run on bladders. Needs pressure to feed. The .15 has the power of a .25 I'm actually selling a spare one that is like new still.