Rogue Sub wrote:Any idea how these motors will run on the lower voltage given they are designed for a max of 22v?
They should scale perfectly. Haven't tried those exact motors yet, but have others from HK. Unlike brushed motors, which have the electrical resistance of carbon brushes to affect the RPM at different voltages. That's why brushless motors are shown as RPM per volt, whilst brushed motors tend to specify an RPM at a specific voltage. Having said that, very high quality motors with lower wattages which use precious metal brushes scale very well (low loss in those brushes) and can achieve efficiencies approaching brushless motors. These tend to be makes like Maxon and Portescap, beautiful motors, but only economical if you purchase them surplus- the new prices will make your bank manager sob!
The fact the new brushless motors have a large diameter can and a huge number of poles indicates these will be torque monsters, and should be able to pull anything up to 3" diameter props quite easily.