Originally Posted by Diggs
I am curious of this also. I have a RC Works reaper wing with very similar power system. Het 3 with a 6x4 prop 60amp ESC all being pushed by a poly 4s 4000mah pack and I can't hit 130mph in a downwind decent, much less 135 level flight. It's frame doesn't have nearly the drag of the stryker either. How did you document these speeds?
I got the results from Winged Shadowed System's "How FastTM Airspeed Instrument. It can measure from 5mph to 500mph and it's $44.