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Unread 30-10-2013, 00:20
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Re: Calculating Linear Force from Motor Torque?

Quote:
Originally Posted by DampRobot View Post
Adam, although I've never built an elevator, a FOS of 4 sounds a bit conservative. I'd assume a FOS of 2 would work well from just general FRC experience. Of course, I'm sure you've had a lot more experience with elevators than me.
I didn't recommend any specific factor of safety, and I generally do these calculations without them as they are kind of meaningless in this case.

For example, why design for 25% motor load with a FOS of 2, when you can call that 12.5% motor load.

It's a style preference, I just don't use FOS here (Although I use it a lot elsewhere).

AS for what % stall is okay, that's tough to say and depends on how often it's used and what motor you're using.