Replace roller rubber on HP 9825 tape drive
Dwight K. Elvey
dwight.elvey at amd.com
Thu Jul 7 13:59:04 CDT 2005
>From: "Joe R." <rigdonj at cfl.rr.com>
>At 12:10 AM 7/7/05 +0100, you wrote:
>>> Well, I finally got around to attempting to re-spool this stupidly
>>> designed tape.
>>It's actually avery ingenious design (it's the same design, basically, as
>>QIC tape cartridges). Remember you want a constant tape speed past the
>>head. By driving the outside of the tape spools at a constant speed
>>(that's what the belt and drive puck do), rather than turning the spools
>>themselves by their axles, that's exactly what you get. It avoids the
>>capstan, pinch roller, slipping clutches, etc, used in audio tape and
> The really ingenous part is that the belt attempts to rotate the take up
>spool about 10% faster then the other spool. That's what tightens up the
>tape if it ever gets slack.
>>> Your description sounds like a different tape than what I was dealing
>>> with. The tape did not come off of either spool but was instead attached
>>> onto both spools.
>>THere were several designs, sure...
>>> At any rate, the stupid tensioning belt (whatever its called) broke on me.
>>> Oh well, fuck that tape. I'll try to read it anyway (is the tensioning
>>> belt necessary?) I also noticed numerous spots on the the tape where the
>>Of course the belt is necessary. It's how the tape is driven. You can
>>borrow one from another tape cartridge.
> Good luck! I could never replace a belt and make it work :=/
I have but I'll admit it was not easy. It is real easy to get
the tape mangled. I've also repaired the roller at the corners
I don't know how it is done at the factory but they must have
a special jig to get it all done right.
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