[GreenKeys] [External] Just bought an Ebay ASR33 in the UK

[Rob Jarratt]

> -----Original Message-----
> From: Jones, Douglas W <douglas-w-jones at uiowa.edu>
> Sent: 09 February 2025 20:53
> To: 'ian parr' <parrid at hotmail.com>; greenkeys at mailman.qth.net;
> rob at jarratt.me.uk
> Subject: Re: [GreenKeys] [External] Just bought an Ebay ASR33 in the UK
> 
> From: Rob Jarratt <robert.jarratt at ntlworld.com> -- Sunday, February 9,
2025
> 12:58 PM
> 
> > Stand screws: 6-40? What length please?
> 
> No.  I'll quote myself from:
> -- https://homepage.cs.uiowa.edu/~jones/pdp8/UI-8/log2015a.shtml#2015-
> 01-13
> As noted on Feb. 11, 2014 there were only 3 bolts out of the 4 required to
> properly mount the Teletype sub-base. Inspecting these bolts, no two of
> them were the same, and none were exact matches for the two options
> mentioned in the Teletype parts list. The parts list indicated that 10-32
screws
> and had been used with an early version of the sub-base casting, while
later
> production used a self-tappng screw and spring clips.
> 
> Note that 10-32 screws and M5 screws are so similar that they are
frequently
> interchangable -- 10-32 screws fit most M5 nuts and visa versa.
> 
> If your TTY has a stamped low-carbon steel base pan, it probably used
self-
> tapping screws and spring clips.  If it had a diecast zinc base pan, all
bets are
> off.  I had a cast zinc base pan, and I ended up making custom-made 10-32
> nuts that fit square recesses in the top of the base pan.
> 
> These screws, in all cases, are designed to be screwed in from below.
> 
> It's fairly easy to remove the top from the base while the machine is
> assembled, but putting the top back on is tricky unless you strip it down
to a
> bare base pan.  You may want to do this anyway in order to replace the
foam
> pad that sits on the base pan under the mechanism.  Your old pad is
probably
> turning to mush, and new pads can be made from new foam.


I think you are right that I should replace the foam pad, I think I remember
it looking a bit bad when I last looked, so it could probably do with being
disassembled and then I can take a look at how the stand is supposed to be
attached.

> 
>             Doug Jones=