Mike,
When I was a boy (a long time ago) in the early sixties, I flew a box stock Nobler with a Veco 19 that had ton's of power. It only weighed 32 or 34 ounces (silkspan and very little dope). The prop I used was a Torpedo Plasticoat 10” X 4”, four once tank, 1-1/2” Veco racing wheels, Froom 1-3/4” spinner, flew it on 58’ lines, Testers #9 fuel. The Guy's in Escondido, CA all told me it wouldn't fly let alone win any contest. Well BS to that I said but what does a 12 year old know? The next contest i beat all of them in the wind hands down.
Mikey