I ran my wee FROG. It started fairly easily. It liked to be a bit "wet". Choke priming only.
Re-starts, hot or cold, were no issue. Operation temperatures are "cool", even when adjusted for maximum revs, as expected with its finned cylinder.
It turns its propeller steadily. Optimal settings were easily found. The Keil Kraft 7 x 4 nylon propeller was fitted.
Video:
http://www.youtube.com/watch?v=Ahjf0...ature=youtu.be