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Old 01-07-2015, 09:59 AM
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MotoMagz MotoMagz is offline
Motorized Bicycle Elite Member
Join Date: Aug 2010
Location: Michigan
Posts: 1,199
Default Re: Can you see what it is?

This reminds me of my garage door opener that came from Germany I think. Anyway it has a captive chain in the top rail and a sprocket follows the chain..the Chain does not move. So the motor is hooked to door. Sprocket spins and walks down the captive chain moving the door
Very Smooth and almost silent. So this is probly a smooth set up and way before its time.
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