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 I like the gearboxes that can move my mechanical systems reliably. - Ginger Power [more] |
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| I like the gearboxes that can move my mechanical systems reliably. - Ginger Power [more] |
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#3
19-01-2010, 22:10
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Re: Worm gears
I have a friend who installs garage doors, thus he fixes and replaces openers too. He donated a few used gears to the team, so I got to play with them. The worm gear has two teeth, spur gear has 32, for a ratio of 16:1. Apparently it's not a steep enough ratio to prevent backdriving (he said a garage door with balance spring problems will fall closed when connected to one of the openers that uses these gears).
Still, it's a nice light weight 16:1 gearset that fits 1/2" shafts, and looks relatively easy to make a box to hold the parts. |
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