Originally Posted by tommays
I doubt I'm generating 500lbs of torque when I move the 5 foot lever
You could make make 500lbs with one hand tied behind you r back with a 5' lever
If it was me i would look at what you could buy and see the power it draws and the input and output speeds of the motor and work from there
The unit of torque is lb/ft. To make 500 lb/ft of torque you need to apply 100 lbs of force to a 5 ft lever.