On Tue, 21 Jul 2020 at 05:52, Tom Smart <smart_tow...@hotmail.com> wrote:

> If i keep the amps at the rating of 9.1 I should keep my 31.3 IN-LBS or 2.6 
> FT-LBS?
>
> So 2.6 / .0813 would be 81.76 lbs of linear force?
>
> So if my table weighs 200lbs my acceleration would be .41 G?
>
> I'm wondering if I've done a calculation wrong

The way I think about it.[1]

Imagine pushing with a force of 1 lb  on the end of a 1 foot  handle
fastened to the end of the screw through one complete turn. That is
circle of radius 1 foot and a distance of 2 x pi X 12  = 75 inches and
a torque of 1 lb/ft
The screw moves 0.2 in
The ratio is 75" / .2" = 377:1
So 2.6 lbft on a 5tpi screw is 750lbs.
I think there was a feet to inches error in the calculation above. And
a shuffling of 0.0138 to 0.0813.

[1] Except in metric, generally.
-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912


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