Electric powered scooters have motors like this.
What's the difference between that and modern cordless drill
Size and weight?
Obviously cordless drill motors are smaller/lighter. Is that due to
higher quality and miniaturization? Or do scooter motors have to be
Power and efficiency?
I'm wondering why a scooter motor has a DC motor controller with a
big aluminum heatsink. What sort of motor controller does a modern
cordless drill include? Why doesn't it require the same?
Apparently cordless drill motors are powerful, at least the way they
are geared. Scooter motors use a belt/chain.
As far as I can tell, given the revolutions per minute, the speed
using either motor would be about the same (the scooter motor as
assembled and the cordless drill motor driving a wheel directly from
What about back pressure on the drill motor? Usually that doesn't
happen like with a scooter motor.
I don't necessarily need all that answered, any comments or insights
I wonder about the duty cycle of cordless drill motors when used in a
Drill/drivers are used intermittently,not continous run like a scooter.
I suspect a scooter motor would have better cooling and less heat buildup.
I think their applications are long and intense enough.
But I do wonder why a scooter DC motor controller has such a big
heat sink and the cordless drill equivalent is nowhere in sight. I'm
hoping that's partly due to a drill's greater motor/system quality.
They certainly cost a lot more.
Overheating is possible when power is being applied inefficiently,
when the motor is not turning.
Power, gearing, and a clutch might help defeat any overheating, all
available on modern cordless drills.
A related concern is just the continuous runtime, but a high-quality
drill with occasional cleaning and brush replacement should do. Will
Given enough power, my main electrical concern is back pressure on
the drill's electric brake. It might take much longer to slow down
the RPMs, but I suspect that's not a problem.
Generally speaking, about cordless drill powered
Apparently Milwaukee's 28 V cordless right angle drill (at about
$350) might be very good for the application but at over 1000 inch
pounds of torque it might even be overkill power wise.
After spending significant money, you would expect it to be modular
and used for other purposes, like drilling.
Drills are designed for ruggedness, which fits the application.
Should avoid getting it wet though.
Cordless drill battery technology is constantly improving. Many
cordless drills come with 3 amp hour nickel metal hydride (NiMH) or
lithium-ion (Li-Ion) batteries which can be recharged 1000/2000
A modern cordless drill/driver has what looks to me like some neat
built-in features for the application.
... gearing, helps adjust for terrain, also allows for a
larger/smaller drive wheel, would be even better if the gears could
be switched on the fly, but oh well
... a clutch, should help prevent overheating, might also help
prevent destabilizing the rider
... an electric brake, that might provide built-in braking if it's
powerful enough and doesn't ruin the drill, maybe it will run like a
souped-up car :)
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