Re: Belt vs. Direct Drive

Hi Chris,
I mention the problem with the rubber because some that I have that
used to fit snugly, now have a little play between the hub and the
rubber sleeve. I don't think the metal shrank, so it must be the
rubber. I wasn't really considering windup, rather, a real backlash
problem due to ill-fit.

Jeff

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Chris Baugher
<cbaugher_yahoo@b...> wrote:

> On Fri, 3 Jan 2003, jeffalanp <xylotex@h...> wrote:
> > Hi Chris,
> > I have some "Zinc hub and neoprene sleeve coupling" (rubber
> > couplings)and I get a some backlash from them. This will be more
> > noticable as the rubber dries out and doesn't fit on the hub as
> > nicely as it does when it is new and fresh. I don't think you are
> > going to get nearly (if any really) the slop from a nice helical

beam

> > coupling (it's all one piece). On the other hand, the rubber
> > couplings are really cheap!
>
> I'm only curious because I have a few of both kinds. The rubber

ones seem

> to have just a bit of windup but it would take a fair amount of

load on

> the screw to make it significant.
>
> C|