Originally Posted by Kevin Cox
Well, my motor arrived Friday and sure enough it is a bit bit for the motor tube in the 4" Hayoe. :
This will be good, Kevin. We can compare numbers vs. my Neu 1521 & Neu1515 on 12s (Turnigy Nanotech 25c/50c 2x5000;s). You kow the old argument, which is more efficient, smaller diam inrunner or larger diam outrunner?