7 Dec
2021
7 Dec
'21
11:59 p.m.
On Tue, Dec 7, 2021 at 10:38 PM Jan-Benedict Glaw via cctalk
<cctalk at classiccmp.org> wrote:
However, when I checked the two drives capstans,
they're old. One
has a crack, and as things go, they feel partially either hard or
gooey. Are there recommendations to exchange these for new ones?
I turned a replacement hub from aluminium rod and used an O-ring as
the tyre. It only has to engage with the drive roller in the
cartridge, it doesn't contact the tape of course.
I
also noticed that one of the two motors rotates quite freely
(both unconnected from the board, so I'm sure they're not magnetically
braked) while the other ... can be turned without any unreasonable
torque, but it won't continue to spin at all.
Hmm... Try a drop of light oil on the bearings first.
I'd then try running the motor off a bench supply and measuring the
current it draws. If the 2 motors run properly like that and draw much
the same current then there are no problems.
-tony