Hi @overdrive, yea, currently ten motors are running in field and stress test. Currently with very good results and no failure. It will takes some time, though, to challenge them for a lifetime equal period.
It might seem a bit thick, but it’s worth investing the dia.
The result is very strong torque at low motor amps, so it’s much easier to run it with a normal vesc six.
thanks;-)
The big advantage is you can use a wide variety of props.
I tested also 7" dia by 8" pitch props. The torque is plenty to run them without big problem.
For best performance in combination with the VESC, though, I designed a prop/duct combination to get the maximum of power out:
Peter,
Winter is here now so its going to be a few month before I need to make a decision on what my next motor solution will be. I was wondering when do you hope to have this motor ready to sell.
…And pre production of series conform motors started. We will take the time to test it in Detail.
I will let you know as soon as it’s are ready to ship. This should be around end of january.
Yes, I can confirm @Peter’s motor looks very promising. I have been testing it for a month now together with Nick’s VESC. The setup is super silent in FOC mode. Tested it in many conditions: waves, storm, flat water, light friends, heavy friends, high efficiency setups at only 13A foiling, high power towing tests,… This past weekend we tested it with various combinations of the new 2020 Axis wings. We are working towards a new DIY reference design. More soon.
I topped out at 43.6kph with my 3D printed prop and with the 3D printed duct (!). The duct adds quite some drag a these speeds, haven’t had a chance to test without. The limit was set by my 100A battery current limit which I reached at this speed. 125A motor amps. Lot’s of power that motor.