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From: John Doe on 7 Aug 2010 22:39
Does this sound right?

drill battery and controller
no-load

driving the drill motor
lowest-speed
1 amp
full throttle
2.8 amps

driving the scooter motor
lowest-speed
1.5 amp
full throttle
10 amps

What concern is there about the cordless drill speed controller
(trigger stuff, PWM, whatever) overheating? I suppose a temperature
monitor could be used, if necessary. I could lose the cordless drill
controller without crying about it. Also, I am dealing with lithium-
ion batteries, so would not want the controller failure to make the
batteries somehow catch fire or explode?

Thanks.



--
The cordless drill is a Bosch 36V lithium-ion hammer drill.

The scooter motor is something like this.
Brush DC Motor XYD-13
Specification
1.Voltage:24-48VDC
2.Rotation:CCW
3.No load: No=2600rpm�10% Io=2.5 A REF
4.Load:T=2.2N.m Nn=2600rpm�10% In=34.0 A REF
5.Lead wire:10AWG Black- Red+ 350�30mm Long
6.With pitch to 6.35mm, roller diameter of 3.3mm,
11 teeth sprocket. Motor diameter of 101mm,
a length of 95mm.
From: mike on 8 Aug 2010 02:34
John Doe wrote:
> Does this sound right?
>
> drill battery and controller
> no-load
>
> driving the drill motor
> lowest-speed
> 1 amp
> full throttle
> 2.8 amps
>
> driving the scooter motor
> lowest-speed
> 1.5 amp
> full throttle
> 10 amps
>
> What concern is there about the cordless drill speed controller
> (trigger stuff, PWM, whatever) overheating? I suppose a temperature
> monitor could be used, if necessary. I could lose the cordless drill
> controller without crying about it. Also, I am dealing with lithium-
> ion batteries, so would not want the controller failure to make the
> batteries somehow catch fire or explode?
>
> Thanks.
>
>
>
completely different design objectives.
I'd worry about continuous high load on a motor/control system
designed for intermittent duty.

What would you anticipate as the total "trigger down" time of a
drill motor over the course of a year. How long would it take
to accumulate that much time on a scooter? Do the same math for the
peak temperature of various components.

People used to try to use auto starter motors in electric scooters,
but not at anywhere near their peak torque rating.
From: John Doe on 11 Aug 2010 18:14




36V cordless drill controller
defond
CGP-1120A-09R
20.1A 42VDC
2 607 202 016







> drill battery and controller
> no-load
>
> driving the drill motor
> lowest-speed
> 1 amp
> full throttle
> 2.8 amps
>
> driving the scooter motor
> lowest-speed
> 1.5 amp
> full throttle
> 10 amps
>
> What concern is there about the cordless drill speed controller
> (trigger stuff, PWM, whatever) overheating? I suppose a
> temperature monitor could be used, if necessary. I could lose
> the cordless drill controller without crying about it. Also, I
> am dealing with lithium- ion batteries, so would not want the
> controller failure to make the batteries somehow catch fire or
> explode?
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