Okay. Resurrecting an old thread. I got a Cox/Roper 140 engine on eBay and I want to convert it for airplane use. This thread is a little old and light on information. I was wondering if someone could help me with the conversion. I tried several searches, but my search-fu must be weak. The engine is 1.4 cu.in, or 23cc. The output shaft is a keyed 1/2 inch shaft. I looked at the stickied how-to posts, but didn't find what I'm looking for. Specifically, how-to on prop shaft, possible carb replacement, ignition replacement, etc. Any help/suggestions would be appreciated.

Mark