Re: need some gear boxes for twin screws

Hi Carl,

You want to use TWO Gecko's (or other drivers), and drive BOTH with
step/dir signals. No problem. Not too good an idea to attempt to run
two steppers or servos off the same drive!

Alan KM6VV


carlcnc@... wrote:

>
> Hi Doug
> Guess I better explain more,
> This is a big machine,I will be spinning nuts on 11/2"dia
> screws, Plenty of load/inertia to overcome. I was thinking of using
> the servos I have on hand hand. Seems that trying to run two servos
> from one set of pins is asking for trouble.
> I could go back to the BIG steppers [2300oz in] but will lose
> performance.
> If anyone has a "trick' to keep two servos from playing tug of war
> when run with Geckos I would love to hear it!
>
> thanks
> Carl
> >
> > I am a great fan of twin X screws in gantry designs. For all the
> > complication involved, I'd suggest instead going with dual motors
> > instead of a single motor driving a jackshaft.
> >
> > My 2 cents, because I've been there....
> >
> > Doug Fortune
> > http://www.cncKITS.com