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Originally Posted by refusalspam
Would the 7XL be too hot for the BK 9920? I read in another thread that its getting very close to the max amp limit and I don't want to upgrade to the next ESC.
Regarding the gear ratios, I'm not sure why 20/66 is too high, but 15/51 is good to start at. Here are the ratios I get, am I not factoring in something?
15/51 = 0.294
20/66 = 0.303
18/66 = 0.273
When my spur goes I'll probably go for the Robinson Racing one to keep the same gear ratios.
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I think you did the ratios wrong.
You divide the driven gear by the pinion or drive gear to get ratio.
51/ 15 3.4 ratio. 66 / 20 is 3.3 So not much difference there.
The 66 / 18 is 3.666666