Subject: how sloppy are speed tolerences in QIC drives
From: compoobah at
valleyimplants.com
Date: Sat, 12 Nov 2005 13:36:17 -0600
To: <cctalk at classiccmp.org>
I'm trying the vinyl tubing approach in replacing the drive roller, since it sounds
like it would be difficult to slide in a different QIC drive when I need to use tape (no
one suggested tips on that). How "sloppy" can the drive roller dimensions be? is
there a feedback loop for speed regulation that interfaces directly to the tape, or does
it rely soley on the stepper motor and parts dimensions? I think I'm about 1/32"
too large, but it could be bigger, since it's hard to measure goo, not more than
1/8th, though.=0D=0A=0D=0A
Well, the TU58 servos off the motor and I found it tolerent of at least 1/16"
variation.
If the drive servos of the data then tolerences are far greater.
Allison