replacement for nylon balls in HP97 card reader - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: replacement for nylon balls in HP97 card reader (/thread-156298.html) |
replacement for nylon balls in HP97 card reader - Alberto Fenini - 09-14-2009 Hi everybody, while restoring an HP-97 card reader, I have noticed that only one out of the original four nylon balls was in place. Has anybody found a compatible item for replacing them ? Thanks in advance for help, Alberto
Re: replacement for nylon balls in HP97 card reader - Randy - 09-14-2009 Shipping will be more than the parts...
Send me an email and I will post a set to you.
Re: replacement for nylon balls in HP97 card reader - Katie Wasserman - 09-14-2009 Randy, I found these replacement balls some time ago and have been using them ever since, but never found a suitable replacement for the rolling-pin shaped part. Do you have an alternative?
-Katie
Re: replacement for nylon balls in HP97 card reader - Randy - 09-14-2009 Quote:
Unfortunately no. But on the up side, the only bad ones I've ever seen are the ones I lost ;-)
Re: replacement for nylon balls in HP97 card reader - Dan W - 09-14-2009 I agree, get 1/8 inch balls at smallparts.com I use the Delrin balls myself. http://www.smallparts.com/Acetal-Delrin-Polished-Grade-Diameter/dp/B0017YT1YY?ie=UTF8&qid=1252979270&pf_rd_r=0XAX5FYGCTKZ6K0F4X54&pf_rd_p=467590051&pf_rd_i=16414311&sr=1-1&pf_rd_s=center-3&pf_rd_m=AIUBT5HP6PMAF&pf_rd_t=101
Re: replacement for nylon balls in HP97 card reader - Klaus - 09-15-2009 I read from someone who used a watchmaker's lathe to build one. It did come out fine, I think he used brass, but "Never again" was written (maybe between the lines) IIRC.
Re: replacement for nylon balls in HP97 card reader - Katie Wasserman - 09-15-2009 I remember something like that too. Since I haven't seen these on ebay, my guess is that it was much too hard to repeat.
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