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• RCX RS2206 2400kv

This is the upgraded 2206 motor MyRCMart sent over for testing. It is a light-weight budget 2206 motor with a nice feature set.

Check out the full list of motors in this series here

Summary

After the regular success of the RCX H line of motors, and the recent revisions of the v3 and SE 2205 motors, I have been very interested in this new RS2206 motor.  It features a on-peice hollow shaft design, 5mm above the bell and tapering to 3mm inside the bell.  It is held in place by a standard E-clip rather than the c-clips that seem to have given trouble on some motors.  The motor itself is well machined and smooth out of the box (or bag, given these don't come in boxes!) The construction feels very solid and there is no vertical play in the bell.  The magnets are standard square magnets, not arced and not super thick like many of the recent motors tested. No magnet strength is directly mentioned in the marketting materials, but given they have mentioned N50SH on other motors in this series, I suspect the same magnets are used here. The airgap is decent, better than some but not as good as the recent top performers. With short wires this motor weighs in at just under 28g, making it lighter than many of the 2205 motors on the market. Overall this motor is very solid, especially when you consider the low price point, but nothing really stands out. 

Now on to the bench results!

Test Results

Given the design and construction of this motor the performance was about as expected.  RPM output was almost exactly on par with the original Emax RS2205 motor on lighter props, but response time thanks to the 6mm stator size is significantly better.  As loading goes up the 6mm hight also starts to give an advantage and the heavy 5" and light 6" props show significant gains.  This motor peaked at just over 1400g thrust on the 6x4 at just at 32A. The best prop for this motor given a combination of factors appears to be the 5x4x4, giving the best combination of efficiency, response time, and thrust output. Given this motors weight, the performance numbers give very solid power for the weight class, especially when cost is taken into account.