Great, I'll do a search for master airscrew dealers.
My motors are 1600 kv and spin fast. Testing only one motor; 7x4 prop gives me 22 oz thrust at 15A and 175 watts and 8x4 prop gives 22oz at 18A and 211 watts. On 3cell 2100 battery.
Was hoping for 30 oz thrust at less than 18A. Not going to happen I don't think. Triblades use more amps I think. Would like to try though.

Carl