82161A Tape Drive - O-Ring Question



#5

I'm in the process of re-aconditioning a few HI-IL peripherals, prepping them for the "big event" once my CL is up & running...

Unfortunately my tape drive has lost one of the plastic o-rings that hold the spring-loaded spindle in place. Does anybody have any suggestions as for a suitable replacement for it?

Thanks,
ÁM


#6

I just looked at one of my tape drives and there seems to be on the very top a white disk that has a hole slightly smaller that the diameter of the post, this disk is the retainer. Under that there are two grey plastic? washers. I made a substitute retainer from a piece of plastic cut from a plastic blister pack, I think almost any thin but stiff plastic would work, the hole in the retainer I took off is about 1.5mm in diameter so I drill a small hole in a piece of plastic and then cut it down to roughly the size of the original retainer and pushed it on and it seems to work, I hooked the drive up to my 75 and initialized a tape a couple time and it is holding.


#7

Thanks Paul, that's exactly the part - badly described in my post, you did it much better. I'll do the DIY during the weekend as per your posting.

Thanks again,
'AM

#8

I doubt that replacement parts are available, but just FYI:

The retainer washer is HP P/N 3050-1042, made of mylar.

The thrust washers that are paired below the retainer washer are HP P/N 3050-1065, claimed to be made of "nyletron". I suspect that it is actually Nylatron GS, which is nylon filled with molybdenum disulfide (MoS2), typically used for strength, rigidity, wear resistance, and low coefficient of thermal expansion.

Presumably any other plastic washer of approximately the same dimensions should work, though perhaps not as well or for as long a lifetime. Normal nylon has poor dimensional stability due to water absorption.


#9

Thanks Eric, as always you're a wealth of information for this comunity.


Possibly Related Threads…
Thread Author Replies Views Last Post
  Need service information for HP 82161A Cassette Drive Peter N1 2 1,414 07-14-2013, 04:11 AM
Last Post: Tony Duell
  HP85 tape reader; end of tape detection inaki 9 3,308 04-25-2013, 02:25 PM
Last Post: Paul Berger (Canada)
  9114A Drive aj04062 4 2,303 11-17-2012, 07:48 PM
Last Post: Raymond Del Tondo
  HP 85 Tape. robertoataulfo 1 1,162 05-03-2012, 06:32 PM
Last Post: Katie Wasserman
  200LX -- can't seem to access A: drive Glenn Becker 6 2,523 04-09-2012, 12:23 PM
Last Post: Glenn Becker
  9830 tape drive question David Ramsey 6 1,830 08-20-2011, 04:39 AM
Last Post: Tony Duell
  HP-9114A Drive aj04062 9 2,981 05-09-2011, 03:30 PM
Last Post: Eric Smith
  HP 9865a cassette tape drive Keith Lueck 2 1,134 11-01-2010, 11:20 AM
Last Post: Keith Lueck
  Query re. HP 82973A HP-IL Interface card and 82161A Digital Cassette Drive John AS (UK) 8 2,351 03-12-2010, 08:50 AM
Last Post: John AS (UK)
  HP 85B tape drive Leonard Adcock 2 1,141 12-14-2009, 04:02 PM
Last Post: Leonard Adcock

Forum Jump: