In Oshkosh I was asked several questions I did not have answers for with me. I told everyone I would answer Questions on my Blog, so here we are.
Briggs and Stratton Vanguard 23, BSV23 prop sizes. The Warp drive was a 60″, The Culver wood prop was a 60 x 27.
Briggs and Stratton Vanguard 35, BSV35 prop size was the Warp Drive 66″
The Verner 3V uses a Warp Drive 66″
The Tail post tail wheel spring is from McMaster Carr and is a part # 9620K31, 2.5″ long, 1.031 od, .781 id. 56.34 max load, spring rate of 95 lbs per inch.