-----Oorspronkelijk bericht-----
Van: cctalk-bounces at
classiccmp.org
[mailto:cctalk-bounces at
classiccmp.org] Namens Tony Duell
Verzonden: zondag 18 april 2010 19:35
Aan: cctalk at
classiccmp.org
Onderwerp: Suggestions for repairing HP tape drive capstans?
I have a number of HP QIC tape drive units -- I think it's 2
off 9142, 3 off 9144 (1 3-board, the other 2 are
single-board) and a 9145 [1] all with hte same problem. The
rubber capstan has turend to goo.
[1] There's a darn 68000 processor in that drive, unlike the
68B09s in the other units. Eeek!
The capstan is a rubber 'tyre' on a metal hub, the latter
being glued to the motor spidnle. The diameter of the hub is
around 12mm (but I wil measure that accurately) and the
overall diameter of the tyre is perhaps 18mm (it's going to
be hard to measure, sure the fact I don't have a solid one :-()
Anyway, does anyone have any suggestions as to suitable
material that I can obtain in the UK to repair this? Assume
as ever I have a reasonable workshop and am not affraid to
pull the drives to bits :-)
-tony
Tony,
I use rubber precision pipes (a special kind of rubberhose).
Diameters for the 9144 are inside 6/16 outside 7/16 inch.
I glue the with polypurethane glue and grind to the right size using
sandpaper 150 (3M wet or dry)
I finish the capstands with a sandpaper 400 so the surface is smooth.
For the HP85 / 9825 /9835 tapedrives I use a 6.5mm citroen hydraulic rubber.
-Rik