Alan Campbell wrote:

My son has an electric quad bike that he has had for about a year now.
He is very confident on it now and is complaining that it doesnt go
fast enough ! I was wondering if there is anything that I can do about
this ?

It has a 6v 7.2Ah battery fitted. I have checked the motor, but
cannot see anything that tells me what rating it is. Could I upgrade
the battery ? what is the best way to go ? upping the volts of the
Ah. Maplins sell 12v 7Ah and 6v 10Ah batteries that would fit the
space, or should I just foget the idea ?



You may be embarking on something you didn't anticipate if you start
tinkering.

Power goes up roughly as the squaee of the applied voltage, so doubling
the volts will net you 4 times the power and proably let the magic smoke
out of the motor :-)

If you REALLY want to have a go, use a starter motor and a 75A/h car
battery :-)

Battery lasts about 5 minutes between charges, and the motor will be
shot in an hour, but in between its - quite fun Those motors are a few
hp

re-motoring is probably your best bet, or rewinding the one you have.

Something out of a cordless power tool might be a place to start.



TIA

Alan