A 1HP motor running at speed is one thing.

A STALLED motor will draw substantially more power (more like 10HP).
The stall torque will depend on the motor design. IOW, you'll have to measure it
or contact the manufacturer for the spec.

The force you see will of course depend on the length of your lever arm.

Donovan Parks wrote:
>
> Hello,
>
> I have a 1 HP motor (= 0.75kW = 553 foot lbs/sec) and need to know how much
> force it can exert.  I am looking for a 'best case' estimate - that is, what
> is the most force it can exert if everything where ideal.  What I am
> thinking, is that if I have a load cell fixed to a wall then what will it
> read.
>
> Power = Work / time = Force * distance / time
>
> So, Force = Power * time / distance
>
> At this point, my physics fails me.  Certainly the time the motor acts on my
> load cell will not effect the measurement and there is no distance
> travelled.... help - where am I going wrong.

Forgetting to account for the length of your lever arm (pully radius)

>
> Regards,
> Donovan Parks

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