Yeah I agree.
I've played with car windscreen motors and had them as garage door openers....they work a treat. Nowdays garage door OEMs use cheaper dedicated motor but the older windscreen wiper motors were excellent, plenty of torque and easy to service.
I've also seen them run on 24V...hooking qty 2 downlight transformers together.
If you try to drill thru the motor output shaft to put on your own cog gear. Use a hand drill at very very low speed. Like 1~2rpm or something like that. They are hardened steel...very difficult to drill unless low speed.
edit:
yep a winch would work...but cost more!
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