[GreenKeys] Fwd: Teletype 37ASR partially restored
COURYHOUSE at aol.com
COURYHOUSE at aol.com
Tue May 28 11:48:22 EDT 2013
Jim - was there anything on the drawing board for a future
mechanical model that would even attempt faster speeds that you knew of!?
Ed#
In a message dated 5/28/2013 7:44:06 A.M. Mountain Standard Time,
jhhaynes at earthlink.net writes:
On Tue, 28 May 2013, COURYHOUSE at aol.com wrote:
> Amazing....
> how did they hold up in long term service?
> fast moving parts.......
>
I don't know, but I've been told (that sounds like the beginning of
some off-color bit of doggerel from my youth)
that not enough were made and they were not in service long enough
for all the failure points to be discovered and fixed. While Teletype
did a lot of intensive testing in R&D, still you don't find all the
weaknesses of a design until you get a lot of equipment in the field
and start getting back the failure reports.
One area of difficulty was certainly the selector. It was hard enough
to make a good mechanical selector at 110 baud, and a lot harder at 150.
This wasn't such a severe problem in the stock ticker that preceded the
37, as the stock ticker used 6-level code. IMHO they should have made
it a parallel input printer and let us make an electronic receiving
distributor to run it; but those mechanical guys were bound and determined
that they could do it all mechanically, given enough time.
And then the keyboard was a fiasco. It was a bad keyboard in the
32/33/38 series of machines; and definitely not something you would
want in an expensive top-of-the-line machine like the 37 was intended
to be. I was told that they knew how to make a much better keyboard
but the product schedule didn't allow sufficient time to develop it.
Well there was enough schedule slippage because of the printer that
there would have been time to do the better keyboard.
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