HP 7035B Plotter replacement drive belt?

From: William Donzelli <aw288_at_osfn.org>
Date: Tue Feb 24 16:13:43 2004

> It's 80's vintage, analog XY pen plotter, there's a mylar low-compliance
> drive belt, mine apparently stretched then dove into the drive gear,
> ruining it beyond all repair.
>
> Does anyone know where to get replacement parts? I have the old belt
> (pieces) so I can get dimensions. (It's about 3mm wide, 2" diam,
> yellowish thin mylar).

If you can find something just a little larger, and you have some room,
you might be able to "squeeze" the belt. You would have to make a thing
with two pulleys (or three or four, depending on space and amount of
"squeeze"). Basically, between the two original pulleys on the plotter,
install your homebrew thing so it forces the belt towards the centerline,
so the "squeeze" pulleys are actually contacting the outside of the belt,
taking up the slack. Its an old machinists trick - they would use it
sort of like a clutch.

William Donzelli
aw288_at_osfn.org
Received on Tue Feb 24 2004 - 16:13:43 GMT