What values of free speed RPM, stall torque, and current to use?

[LLogan]

Maybe I just need some 101 on how to read the motor curves.


What percentage of our max stall torque and/or free speed RPM should we run our motors at? How do we determine this? I.e. what is a good rule of thumb?

At said stall torque/free speed, what current will we draw? (How do we read this off of the motor curve?)

In our application we are trying to lift about a 20-25 lb mechanism through a winch. We will have up to four RS-550s dedicated to this task, but we really have no idea how to go about the calculations without the knowledge above. Please apply this to other motors as well!

We will theoretically never stall these motors, or come even close.

Thank you so much,
-Logan