Re: cable drive for X axis

I don't know if I could find a timing belt 24' long and would have
the same problem with it slapping around. I will have to run a low
tech test on cable with 12' span and weight with multiple reversals
in direction.
I'm not sure what slippage you refer to. The cable would be a closed
loop system with a fixed end on the drum. The wraps on the drum
would be side by side so the same
feed rate would come from each revolution.

Marc



-- In CAD_CAM_EDM_DRO@yahoogroups.com, "onthemarcxyz"
<onthemarcxyz@y...> wrote:

> Hi all my name is Marc,new to this group.
> I am thinking of building a CNC router with a 12' X axis.
> I was first thinking of rack and pinion drive but was concerned
> about backlash. Then I was thinking of using cable prestressed
> between two drums driven by the servo seems this would have no
> backlash?
> what do you think.
>
> Marc