> > I assume they mean that once tensioned, it will not "give" and lose > it's tension.
> > Knowing the belt modulus or stiffness it is a very simple calculation. > Unfortunately I haven't been able to find that critical number for > that belt type. > > Not wanting to re-open a can of worms, but there were some > calculations done a few months ago on this very subject. (is there an > archive?) > > This is an interesting twist on the concept > http://www.bell-everman.com/servobelt.html > -- > atp Ya, I assumed the same and yet, it did. I'm not sure if it i was simply wear-in or actual stretch [or what] but in that particular app, it did stretch over time. I've not been able to find any details on what the calculatable stretch is, hence why I've stayed away from it in my application. I've also seen that site w/ the meshing belts and while this should [theoretically] reduce the ability for belt stretch it does mean having twice the amount of belt that I'd normally need At that point [w/ Eagle Pd] I may as well go to a ballscrew 'cause the cost to do the whole machine w/ that much belt just pushed it out of the wrelm of reality in comparision to a ballscrew. Best J. Johnson ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
