I have assembled a 4WD car using kits I bought on ebay.
The description says:
- Operating voltage: 3V~12VDC (recommended operating voltage of about 6 to 8V)
- Maximum torque: 800gf cm min (3V)
- No-load speed: 1:48 (3V time)
- The load current: 70mA (250mA MAX) (3V)
- This motor with EMC, anti-interference ability. The microcontroller without interference.
- Size: 7x2.2x1.8cm(approx)
I am not too fond of the max speed I can reach, but I would be able to provide more power, because I have a 12V 2A battery onboard.
So far I have used 6V, because that seemed to be the safer voltage choice.
Has anybody tried successfully higher voltages, without wearing down the motor in few hours (I've read this can happen)?
Alternatively, can someone recommend replacement motors that would tolerate reliably a higher power envelope?
I would like to preserve the gearbox and replace only the motor, if possible.
I think I could fit a motor 2-4 mm longer (replacing the transparent strap which bonds it to the gearbox), if that makes any difference.
BTW, I'm making the assumption:
higher_voltage => higher_torque => higher_speed
but I'm not sure it's overall correct.
I expect that it would at least produce higher acceleration during the transients.