Quote:
Originally Posted by Matthew_Armeni
Thanks! I never really thought about the re-gearing though it should have been ovbious, doh! Now, is there also a point at which increasing voltage and re-gearing will no longer be beneficial? I mean at some point the motor will be spinning too fast and cause overheating, right? Is this where finding the sweet spot of the motor comes in? Around 35K is what I've been reading on here.
But, the 9XL doesn't draw that many amps anyway, entjoles- what are you hoping to get by running 5s? I'm guessing more top end.
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Yes, there is a point where just changing the gearing will no longer be beneficial.
Let's go back to the two setups I mentioned that were equal in performance with just a few things different to make them perform the same.
#1 on 4S, the motor spins at 35k but has the same gearing as #2. (2365 kv motor drawing 60 amps at 40mph)
#2 setup on 6S spins the motor at 35k. (1577kv motor drawing 40 amps at 40mph)
With the two setups equal in top speed, what are we hoping to get? Less amp draw usually means less heat build up in components. Heat build up is like an Energy leak. It's like running a battery powered electric heater. We spend that energy to make heat instead of motor power.
#2 setup will run longer on each charge and probably tend to accelerate faster than setup #1 because the lower the kv of a motor, the more torque it makes.
