Chuck,
That sounds like a far better method than I used. Standing by the side of the runway about midway estimating when it crossed the ends counting thousand one, thous...hit, man that's awfully quick. Perhaps I can get a couple of guys to try two stopwatches with cell phones...
Anyhow like I said, the primary goal was to see if a plane with a 3/8 thick wing could make it past 130 without blowing up from flutter, and that I pretty sure that it did. Now it's just a case of, how fast can it go. This is the fastest plane I've ever built and I'm still not sure of what I am doing.
It was pretty darn quick on that last diving pass...