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Unread 05-01-2015, 13:53
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Re: Elevator counterweight / constant spring and ability to lift different number of

Quote:
Originally Posted by vps View Post
window motors, snow blower motors, and van door motors (these have the most torque) have worm drive. Use those.
These are 30 watts or less, meaning they are very slow.

Given lack of machining, I agree with the bike brake idea. Otherwise I would say use a steel punch into a hole in a 1st stage gear in the gearbox, pneumatically actuated. 1538 did this with great success in 2013. Requires some precision machining to line up the punch with the hole though.