UH-1N Iroquois (600) Conversion

Got my 600 size UH-1N flying great after changing a few items like, 690 main blades , got rid of the 1200kv motor and installed a 520kv motor. Running on 12S .
I had to hit the drawing board and recalculated the formula to bring the headspeed down to 1388 rpm with some help from Butch W.
Pictures by Butch Wellmaker