Electric motors for RC airboat

by Simon
(Sweden)

Hello!

If I have a normal electric motor of around 10V, and use a 8.5V pack, what happens if I switch the motor to a brushless? The battery is still 8.5v but just with a different motor? Brushless or anything like that? Will my rc airboat go faster?

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Electric motors for RC airboat

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Nov 03, 2010

Re: Electric motors for RC airboat
by: Pete

Hi Simon - you'd need to choose a brushless motor that's rated for at least 8.5v and more importantly you'd need to change the ESC for a brushless one - you can't use a speed control that's meant for brushed motors with a brushless one.
Upgrading the pack to a Li-Po one would increase performance, then you could go for a larger voltage, say 11.1v ( a '3S' pack).
You'd need to be sure that motor and ESC can handle the current draw, which will largely be determined by the size of propeller. The motor manufacturers usually specify a prop size range for each motor, you need to stay within that range to prevent damage to the motor or ESC.

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