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Old Oct 10, 2012, 03:10 PM
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Joined Apr 2012
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I believe the difference is RPM speed.The are motors with the same size but different RPM.Some with 10000,18000 RPM ,some 34000,other 45000,or 48000 rpm.Prices are different also.I believe the motors with unspecified rpm speed are with the lowest speed maybe around 10000-18000rpm ,cheapest also.
You can check the motors speed you have with a tachometer and compare.It will be nice to have a speed comparison between stock motors or stock vs others.Maybe the similar flight performance between different size motors 716 vs 720 is speed related.

http://www.aliexpress.com/wholesale?...tId=0&manual=y
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Last edited by midelic; Oct 10, 2012 at 03:19 PM.
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