Mount it up on a test stand and break it in, if new, and get some rpm/prop figures accumulated. Then compare it to other engines in its class on the prop/tach forum (wrong name, I know). If it will come close to matching a Moki 1.8, it will fly the Midwest Extra well. If not, then someone flying a lighter, smaller model might be interested in it. Maybe even you, if you mount it on an Ultra Stick 1.20 Lite. Just kidding.

I've only seen one of these run really well and it took a few gallons of fuel to get it there too. It was mounted on a very popular rendition of a Super Cub. I can't remember if it was a Byron kit or not. But it hauled that behemoth around very well. Before it was broken-in, it suffered serious overheating problems. It could have been that the exhaust outlet in the cowl was not large enough and not an engine problem. Eventually, the owner got it sorted out and it worked well, until his student pilot accidentally shot his instructors plane down. Talk about irony.


Ed Cregger