lift winch ideas anyone?

[windell747]

Hi,

I've recently just started designing our lifter. Unfortunately, I don't have permission to release our idea, but what I can say is that we are using a winch type mechanism.

I want to design a small winch capable of lifting just our robot (120lbs) using as many COTS products as possible. Have any of you thought about a design for such a winch.

We are thinking about using two counter-rotating drums that are driven off a single motor. The questions we have is what motor/gearbox to use.

Thanks for your input,
windell