I am finally breaking in my never run Silverstar .61 in my 20-25 old Super Hots that I just completed rebuilding. I'm running it with an 11/6 APC for breakin. 15% Cool Power Nitro. You can check out my gallery. I could'nt believe how well this plane flies with this engine lots of power. Plane ways in at 6.25 lbs and the engine is producing 7.0 lbs static thrust @13,500 RPM. Runs great. Nothing wrong with the older engines, I actually prefer the quality of them over some of the new ones.

Fly Safe and Have fun.

Neil