Hey 14

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Hey 14

Post by Bernie/MA » Fri Aug 09, 2019 9:53 am

I want to lift a cover weighing about 60-100# using an Acme screw like a sissors jack. How would I figure the dia of the rod needed for a 3 foot span? 5/8?

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Re: Hey 14

Post by PHPaul » Fri Aug 09, 2019 10:55 am

I'm sure there's an engineering calculation that applies but my engineering experience consists of "Guess how big it needs to be, then go bigger."

I think I'd go 3/4 just be sure.


Is the screw going to be in the center of the cover and lift vertically as sketched above, or some other arrangement?

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