[EVDL List]

Re: [EVDL] Running a forklift motor at higher voltage?

In a message dated 9/6/2007 3:51:50 PM US Mountain Standard Time,
[email protected] writes:
> EVDL] Running a forklift motor at higher voltage?
> Date:9/6/2007 3:51:50 PM US Mountain Standard Time
> From:[email protected]
> Reply-to:[email protected]
> To:[email protected]
> Received from Internet:
>
>
>
> Hi,
>
> I've seen some posts regarding the use of forklift motors in cheap EV
> projects.
>
> Is it safe to just run forklift motors at 72V and much higher RPMs than
> normal?
>
> Thanks,
> Morgan LaMoore
>
I have a 24/36 volt motor with my controller set at max 260 volts in my
S10.Its has a 13in.dia.motor.I have been running it at 5450 rpm at the end of the
qt.mile(106mph),but I would not run it for a long time at these rpms especially
with lots of current. I have spent a fair amount of time and money however to
get it to that point. A junkyard motor would at least need rebuilding but
should go to 72 volts with ease. D Berube
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[EVDL List]

Re: [EVDL] Running a forklift motor at higher voltage?

--- damon henry <[email protected]> wrote:

> Most DC series wound motors are essentially forklift
> motors being run at a much higher voltage. Usually
> as the voltage goes up the timing on the motor is
> advanced to help prevent arcing, but this is not
> always the necessary. Forklift motors are designed
> to be put under a heavy load and run all day long.
> In warehouses with 3 shifts, they can run around the
> clock. Most EVs do not even have enough battery
> power to run for a full hour without a recharge, so
> the motors being used in forklifts in the warehouse
> environment are being stressed much more than the
> ones in EVs. You could even think of your EV as the
> motors equivilant of retiring to Florida

Hey (again) Damon, all

In general a fairly correct statement but...
EVen forklift drive motors are rated for a 1 hour duty
cycle. Low use forklift owners rarely go though
motors but the guys that chug all day are the same
ones I get most my business from, lol. Determining
ones own duty cycle involves a great number of
factors. I'll write more when I have more time and
something in the gut 8^)

Cya
Jim Husted
Hi-Torque Electric




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