Norm,
I have the setup as you do. Hanger 9 Cub with OS 52 Surpass. Initially I had the same problem, plane would not build up much airspeed on the ground. I managed to get the plane off the ground but it was a dog in the air, just about flying. The only thing I changed was the prop and what a difference. I fly mine with a 12X6, APC. I my intial flight I had a 11X7. A 12X6 sounds like alot of prop but that 52 has no problem. I swing around 9,000 RPM and the plane flies great, plenty of power for a cub. I have about 20-30 flight on it now. Let me know if you have any questions. [email protected]

Tony Gagliardi Jr.