Always a good day when the mailman delivers a package of RC goodies :) Today I received some Carbon Fiber 6x3x3 props from RC Timer. They are sold as a package of four props, two CW and two CCW as they are for multi rotors, so for $10.99 USD, I figured it was worth the try.
I also tested this prop on the Turnigy D2826/6 2200 Kv motor from our "mild" list of motors with some interesting results. All test results are using a Turnigy Plush 60A ESC with timing set to low and a Zippy Flightmax 2200 3S 40C battery.
Turnigy D2826/6 2200 Kv motor
50% throttle - 10.7A/127.3W producing 426 gr/15.0 oz of thrust;
100% throttle - 21.5A/245.8W producing 715 gr/25.2 oz of thrust.
So compared to results I have seen with this motor in multiple tests with the 6x4 APC prop testing about six different motors, this thrust is at the low end. Depending on quality control, I have seen results between 25-30 oz of thrust depending on the motor. However, this is definitely the lowest amp draw I have ever seen to produce that kind of thrust with this motor. So if you built a very light plane and didn't need or want a huge amount of speed but rather endurance, this prop would be a good choice I'm thinking. You could also comfortably use a lighter 30A ESC without problem with that low and amp draw as well.
Gear Best A2212/5T 2700 Kv motor
50% throttle - 15.3A/190.1W producing 500 gr/17.6 oz of thrust;
100% throttle - 29.4A/343.4W producing 840 gr/29.6 oz of thrust.
So I'm pretty excited about these numbers with the GB 2700 motor. Compared to results I collected with the 6x4 APC prop, it does draw 2.2 more amps at mid range, but produces 3.2 oz more thrust. At full throttle, it produces 2.4 oz more thrust but pulls 3.6 less amps. I'm very interested to see how it performs at the field, I suspect with the very stiff hub and blades on this 6x3x3 carbon fiber prop, the thrust numbers I see on the bench should translate well to the field without the huge amp draw and over heating problems I had when I tried the GB 2700 motor and the MA 6x4x3 prop.
In the future I will also test this prop with our "hot" 2212/6 2700 Kv motors to see what results I get there after trying it out at the field on the GB 2700 motor.
More testing to follow :) I also updated my motor testing spreadsheet which you can find on the RC Powers forum at post #436.