Turnabot FAQ's

Excellent question. As usual with excellent questions the answer has some complexity to it.Our motors are designed to be as "hot" (most torque and speed) with appropriate longevity as possible on 2S. The indicated RPMs are all on 2S.RPM, torque, and stall current are all roughly linear with voltage. So going from 2S to 3S gets you half again the RPM, torque, and stall current.1400rpm motors that stall at 2.2amps on 2S become 2100rpm motors that stall at 3.3amps on 3S, and 2800rpm and 4.4amps on 4S.It's key to remember that those 1400rpm motors have 30:1 gearboxes on them, so the motors themselves are doing roughly 42,000rpm on 2S. 3S puts them to 63,000rpm. 4S would be 84,000rpm.Our motors can live for years of demo and loaner bot abuse on 2S. On 3S they still live long lives when used for 3-minute-ish battles (avoiding long stalls and long full rpm time). On 4S they won't survive stalling or running at full speed for very long.There's a bit more details here:https://turnabot.com/blogs/turnabot-tales/brushed-motor-stall-currents

There are plenty of people running our N10 motors on 3S. Please be aware that there are two common ways to hurt  motors:1: Overcurrent / overheat- the more torque you’re using the more current is running through all the parts. The more current the more heat. Stalling a brushed mirror is the maximum torque and current, it literally turns the entire circuit into a heating element. The motors will not last long stalled on 3S. As in, two full seconds will likely damage them. 2: Overvolt / overspeed - the higher the voltage the higher the rpm. Most motors, particularly the bushings, are made to turn a certain rpm. Ours are designed for maximum performance on 2S. As with most brushed motors, running them at 150% voltage approximately equals 150% rpm, and they’re “okay” at that rpm for a while, but it’s certainly wearing them faster than at their rated rpm. So, it’s certainly doable, but be aware of stalling and total time at max speed. Running 4-motor 4wd is easier on them…