I managed to get out and complete 12 more flights with the Gear Best 2216/5T 2700 Kv motor which I had already reported on testing with a 6x3 EMP prop in this blog post. I am now running this motor in my high time NAMC Mig-35 which needed a new motor after I essentially burned out the Turnigy D2826/6 2200 Kv motor as I described in this blog post.
I took the follow readings on the wattmeter with the 6x3 EMP prop
- 50% throttle - 13.1A/162 watts;
- 100% throttle - 28.1A/340 watts.
Then I switched to the 6x4 APC prop for 7 flights. I was a bit concerned that heat would be an issue or that the motor would get bogged down trying to swing a prop with more pitch and a more aggressive bite. Fortunately, mother nature was on my side as the warmest it got while I was flying was 3 C/37 F and the motor seemed to handle the prop just fine.
The readings on the wattmeter with the 6x4 APC prop
- 50% throttle - 13.4A/161.1 watts;
- 100% throttle - 33.6A/399.7 watts.
Between about 50-75% throttle during rapid acceleration changes, the 6x3 EMP prop had just a slight advantage in acceleration most likely due to the lower pitch and faster spool up of the motor. But once beyond 75% throttle, the 6x4 APC prop gave much better top end speed. I didn't clock it yet, but I could tell that it was faster.
Overall, I was very pleased with the performance of this motor with the 6x4 APC prop. Perhaps in warmer conditions heat build up might be of concern, but I think I may have found my prop/motor combo for this plane for the winter.
Next up I will test it with a 6x4 EMP prop to see if there is any difference and eventually I will bench test this motor with all of these props to see what sort of thrust numbers I collect.
So I would place this motor and 6x4 APC prop combo in the middle between the D2826/6 2200 Kv motor with 6x4 APC and the 2212/6 2700 Kv motor with 6x3 EMP prop. A great little setup for the price :)