Den tis 16 okt. 2018 kl 11:52 skrev Guy Dunphy via cctalk < cctalk@classiccmp.org>:
> Previously: Manual for Documation TM200 punched card reader > > Restoration of the mechanics of my TM200 punch card reader progresses. > There's a writeup here: > http://everist.org/NobLog/20180922_data_in_holes.htm#tm200 > > Currently I'm machining a mold to cast new pinch rollers - and there's the > rub (ok kill me.) > The old rubber rollers were decayed to gunk, so there's no chance of > measuring their original dimensions. > From the mechanics, if they were just touching the steel capstan rollers > they'd have been 27.1 mm Dia. > The mechanics has no adjustment or spring tension on the pinch roller > positions. Their shafts are in fixed > position, so all the spring is in the rubber of the rollers. > My hardened rubber rollers in my M200 measure 26.8 mm. /Mattis
