Hey Brian,
This is very useful information. Thanks for doing this research. Can you give me this guy's contact info?
A Pyro 600 that runs on 10s, and is rated for 3kW, would be the ultimate Contra motor. A motor like this would make Contra Drives fundamentally lighter than all currently available single prop systems. Of course, there is nothing that prevents developers of single prop systems from pursuing a similar approach.
Within the same gearcase housing, and using the same ring gear, we can create gear ratios from 5.8:1 to 8.3:1.
What we have done is shift the design inference space to lower gear ratios, which allows us to correspondingly scale the size and weight of the gearbox. However, doing this requires motors that have higher torque, so there is a trade-off between gearbox size/weight, and motor size/weight. What we're trying to do is hit the sweet spot between these two trade-offs.
Brenner ...
Last edited by Brenner; 04-08-2015 at 03:58 PM.