Gawd, tell me about it... I just got through rebuilding the drive roller in half a dozen Tektronix YT-1 and YT-1S chart recorders for the 1502B/1520C/1503B/1503C TDR's. The recorders were built by AstroMed and the roller was made of a black urethane that reverts back to its primordial goo. It turns to an incredibly sticky spooge that flows over the circuit board and coats the print head.
And then there is the drive roller in the HP65/67/97 calculator card readers. Not to mention the platen in the electrostatic 9120A printer for the 9100A and 9100B calculators. ---------- Urethanes arent well known for stability. _________________________________________________________________ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. http://clk.atdmt.com/GBL/go/201469229/direct/01/ _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
