Testing made possible by generous support from:


RCTimer FR2205 2300kv Full Results  [CLICK HERE]

 


This is the  2205 2300kv updated red edition of the RCTimer FPV motor line.  RCTimer send it over for testing. Once I've done the full bank of motors, I'll do a document sumarizing the direct comparisons.

Check out the full list of motors in this series here

Summary

This is the first motor from RCTimer that I've tested.  The first thing I noticed was that this motor is huge, and quite heavy.  It weighs in at about 32g, and is significantly taller than most of the other motors I've tested. I also noted some oddities in the design. The bell is closed at the top, and has openings in the side, but it lacks the internal low pressure channels and exterior flanges that would make it an active cooling system.  Basically the airflow is restricted and there's not alternative pathway for the air.  On the positive side the shaft is quite robust with the threads machined into a steel one-piece shaft and the windings look excellent: single wire, thick guage.  Also it is worth noting that the bearings were a bit rough on two of the four motors I was sent for testing.  Overall I would like to have been more impressed by the quality of this motor.  As it is, I feel like there is some room for improvement.

Now on to the bench results!

Test Results

Results here were somewhat interesting.  The RCTimer motor has put out the highest thrust of any 2205 motor I've tested so far.  The RPMs also confirm that, and I double-checked the calibration of the stand.  Almost across the board the motor acheived higher numbers than I was expecting.  The motor tested at about 2350kv before I ran the tests, but the interesting part is that contrary to the marketing claims, the magnets do no appear to be high temp.  I detected a rise in KV as the tests progressed, which explains the higher numbers as we get to the larger props.  After the test, the motor tested at 50kv higher, coming in a little over 2400kv.  I saw a similar rise in the DYS SE2205 motor that also uses standard temp magnets without an active cooling system.  On the other hand, the ZMXv2 which I confirmed uses high temp N52 magnets showed no difference between before and after no-load testing.   This motor also generated a good deal of heat, which is no suprise given the lack of air circulation, and probably aggrivated the demagnetization. Also it is worth noting that this motor was extremely unblanced, and caused a good deal of vibration on the stand. Again, given the high numbers this motor generated it had a lot of potential. Unfortunately the issues here seem to be enough to warrant caution with this motor.  With some improvements to the design, making it lighter and improving air circulation as well as improving the quality of the bearings and balancing, this could really be an excellent motor.