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Originally Posted by neweuser
Sweet Spot, i've seen a lot of that in threads, but if my calculations are correct. I'm running around 28,000 right now with 16 cells. Is that a bad thing? If I were to run 20 cells, that would bring me over 30,000+...
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The sweet spot is where the motor operates most efficiently. You can probably get a little more than 28k rpm on 16 cells. For one thing, that is assuming a nominal 1.2v per cell, but cells can be as high as 1.3+ on a full charge. Also, the actual kv rating you are using is its "loaded" value, which is dependent on weight, gearing , etc. The 10xl's unloaded value is 1668rpm/v. Those kv values are probably average values too, so there is some variation. Depending on weight and other factors, you can probably get between 30k-32k rpm on 16 cells.