YEA! I found my answer to airspeed difference!

[Lanny Shorts]

I worked it out. 65' lines +2'6", shoulder to handle, +6" lead outs = 68' to inboard wing tip. I'm flying 30" equal wing panels.
Therefore, 68' + 60"=73' to outboard wing tip. Inboard wing tip "D" is 136', x3.14 (pi)="C ", 427.04 ft. Outboard wing tip "D",
146' x 3.14(pi)="C", 458.44 ft. Lap time is 5.6 sec. Inboard tip travels 76.25 ft./sec.=51.98 mph. Outboard tip travels 81.86 ft./sec.,
=53.90 mph. So that 2 mph difference has helped to bring about the science of studing outboard wing panel lengths, difference in
area of inboard/outboard flap area, and wing tip weight. "D" is circle diameter to inboard wing tip and outboard wing tip and "C" is
the circumference of thiose two circles. Thank you for the very interesting replies. Lanny

[Shorts,David]

I am in training to run alongside my airplane to eliminate this differential. Unfortunately the judges will need to do the same.

[Dave Harmon]

I am in training to run alongside my airplane to eliminate this differential. Unfortunately the judges will need to do the same.

Something similar happened to me when I was a teenager.....
I was running alongside a bus trying to save $10c for fuel or a new prop when my Dad drove by and asked what the heck I was doing. I said...'saving a dime'.
Dad said I should run alongside a taxi cab and save 15 bucks.
Took me a while to understand what he meant but by then I had kids and a beard.