HP Forum Archive 21

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9815 data cartridge drive (also 9825 / 9845 / 85 / 87, and who knows what else) Message #1 Posted by John Ioannidis on 10 June 2013, 3:00 p.m. There are a number of sites explaining how to rebuild the gooey-wheel capstan for the cartridge drive. They all give dimensions, but no source for these dimensions is mentioned. Does anyone have the original engineering drawings of the CJ drive, indicating the actual measurements of the rubber roller?

Re: 9815 data cartridge drive (also 9825 / 9845 / 85 / 87, and who knows what else) Message #2 Posted by David Ramsey on 11 June 2013, 10:04 p.m., in response to message #1 by John Ioannidis Not that I know of (although if someone does, they're probably here). But the dimensions simply aren't that critical. For these tape drives, as long as you're within a millimeter or so, you're good.

Re: 9815 data cartridge drive (also 9825 / 9845 / 85 / 87, and who knows what else) Message #3 Posted by Craig Ruff on 12 June 2013, 7:20 p.m., in response to message #1 by John Ioannidis I found a page that mentioned 10.7 to 10.9 mm, which equates to 0.425". I just redid two 85 drive spindles with 3/8" ID, 1/2" OD vinyl tubing superglued to the hub and used a diamond nail file to reduce the OD to about 0.425". The drive passed the 85 service ROM tape diagnostics at that diameter.

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