KV rating vs. Gearing

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Achieving the same top speed with either high gear ratio and high KV rating VS low gear ratio and low KV. Everything else being the same. Why would I chose one over the other? Is there any practical difference at all?

@tipsy There are practical limits all around: Your motor controller can only handle so many ERPM and a higher KV motor may exceed the safe limit.

Likewise there are limits on your gearing: If your motor pulley is too small (less than 12 teeth or so), you won’t have enough teeth engaged with your belt to transfer a lot of power without skipping or breaking belt teeth. If your wheel pulley is too large, you’ll end up with ground clearance issues.

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None of these two are good, in real world, you don’t go ~50 with only 7s battery. from these I would choose the 220kv one, giving more rpms, but logical gearing would be at around 28-33km/h.

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