necessary torque for an arm

[Vikesrock]

Originally Posted by 548swimmer

Okay, so if I add a 2:1 reduction, we'll be at 126 ft-lbs and 12.5 RPM at peak efficiency.

There's a potential problem. The p80's are rated for 85 ft-lbs max. Is this for the torque inside the gearbox, or the torque of the system?

That rating is the max recommended torque at the gearbox output.

[548swimmer]

Originally Posted by Vikesrock

That rating is the max recommended torque at the gearbox output.

Happy Birthday!

And so that system would be fine? (mind-numbing speed aside)

[Jeffy]

If it's worth anything to help you judge speed:
We will be lifting a 3.5 pound arm that travels at 100 deg/sec (100 deg is full travel).
We also have options to slow it down via programming or different sprockets incase we find it is either too quick or too slow.