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9815/9825 Capstan
06-24-2017, 02:33 AM (This post was last modified: 06-24-2017 02:38 AM by Paul Berger (Canada).)
Post: #10
RE: 9815/9825 Capstan
I just rebuilt the capstan on a 9825T drive and did the DC-1000 conversion at the same time. I did not machine off the old wheel but rather I added about 2.5 mm of height using a piece of hard plastic glued on top using cyanoacrylate glue. Since I don't have a lathe available to me I ground the plastic down to the same size as the metal wheel using emery boards and a file with the motor running off a DC supply. Once I had it down to size I slipped on and glued a piece if silicon tubing but the outside diameter was too big so ground it down using emery boards with the motor running. None of the DC-100 cartridges I have are any good even the new-old 3M ones I got the media keeps sticking to the drive band and getting wound up in the cartridge, however I recently got some QD2120 tapes, these are a 120MB version of QIC-80 tapes and after thoroughly erasing them with a bulk eraser I was able to mark files on the tape, store a program and read the program back from the tape. I have not tested this extensively yet but it looks promising. Now I will need to do the drives in my 9835A and my other 9825T, but first I think I will look into getting a small lathe. I got this one working without a lathe but I see now that a lathe would make it a lot easier.

Edit I forgot to mention one problem I had with the QD2120 tape is it positioned the tape between the single start of data hole and first pair of double BOT holes and when it would try to find the start of tape it would fail with an "unexpected BOT" error, I had to manually move the tape forward part the start of data mark and then it was OK.
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Messages In This Thread
9815/9825 Capstan - aj04062 - 06-05-2017, 11:37 PM
RE: 9815/9825 Capstan - Craig Bladow - 06-06-2017, 03:02 AM
RE: 9815/9825 Capstan - Geoff Quickfall - 06-06-2017, 04:08 AM
RE: 9815/9825 Capstan - Craig Bladow - 06-07-2017, 06:54 PM
RE: 9815/9825 Capstan - cruff - 06-08-2017, 12:12 PM
RE: 9815/9825 Capstan - Craig Bladow - 06-16-2017, 01:13 PM
RE: 9815/9825 Capstan - Katie Wasserman - 06-19-2017, 01:34 PM
RE: 9815/9825 Capstan - Etienne Victoria - 06-19-2017, 02:49 PM
RE: 9815/9825 Capstan - Paul Berger (Canada) - 06-24-2017 02:33 AM
RE: 9815/9825 Capstan - Craig Bladow - 08-26-2017, 06:18 PM
RE: 9815/9825 Capstan - aj04062 - 08-27-2017, 12:37 AM
RE: 9815/9825 Capstan - Craig Bladow - 08-27-2017, 02:52 AM
RE: 9815/9825 Capstan - vassilisprevelakis - 09-07-2017, 01:32 PM
RE: 9815/9825 Capstan - Craig Bladow - 09-09-2017, 08:25 PM
RE: 9815/9825 Capstan - vassilisprevelakis - 09-12-2017, 07:10 PM
RE: 9815/9825 Capstan - vassilisprevelakis - 09-12-2017, 05:36 PM
RE: 9815/9825 Capstan - Craig Bladow - 09-13-2017, 12:09 AM



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