Re: Formula? for determing torque of motors and leadscrews.

I found the formula but it looks wrong. Using it with all others
equal, ballscrews required much more torque than acme screws.

Just subscribed today, and would love to know the secret
formula to stepper-driven happiness !

I'm starting with a large mill/drill (8"x24") and acme screws.
Hoping to upgrade to ballscrews and a fullsize b'port or the like.
But really only want to buy one set of motors. 740oi? 1070oi?

-d

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
<davemucha@j...> wrote:

> This is a good reference.
>
> Thanks Jon and Mariss
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "hllrsr_uk" <hllrsr@c...>
> wrote:
> > Guys,
> > After spending a couple hours searching the archives I'm in need

of

> a
> > lead.
> > I can remember someone (Mariss? Jon?) posting a formula for

applied

> > force that used motor torque, gearing, and screw pitch.
> >
> > If anybody knows the formula, or knows a better way of searching
> the
> > archives, PLEASE pass it on.
> >
> > TIA
> > Iain