plenty o' model rockets were flown at dairy air (run by Tripoli) this year. I'm t' lazy t' do t' math, arrr, but me camera got one movin' about 30 feet a frame, at 30 fps. Nobody broke 10k, at least on Saturday (it was 105 Fahrenheit, so we ditched Saturday evening.) t' rocket with t' most thrust was flyin' two stage M2500 t' M150.(the motor rankin' be t' alphabet, b is double a, c is double b, arrr, etc. and A can launch a pound about 200 feet.) I believe that t' numbers by t' letters are t' number o' grains.