RE: briggs 4 stroke prop?
That is a slick little starter rangerfred. Not sure if I could hold it steady enough to start a plane though.
Thus far my old 12V Sullivan running on 18V has worked but I haven't started anything over 25cc and I'll need a solution for a 33cc Homie.
I've been using a pull cord on the test stand but not sure if I could do it on a free moving (tail staked) plane.