[Duncan]

Hi Dameon

Forget about the motor voltage - the controller will vary that to suit the rpm and your current requirements
You can't overvolt a DC motor

What you can do is over-rev and over-current one

The limiting factor is the controller voltage

 

[Duncan]

Hi Dameon

With a DC motor you control the current - for a given current and RPM there is only one voltage that "satisfies" the equation

So you can't "overvolt" a DC motor without either or both over speeding it or over currenting it!

My motor is rated at - 10 Kw , 206 Amps, 48 v and about 1400 rpm

I am using 340 volt battery and 1200 amp controller - at the end of the 1/8th mile I'm doing 4700 rpm

So I'm overvolting it over currenting it and over revving it - so far so good - next year sticky tires to try and get a faster time