Duncan,

Thanks for the reply.  Fortunately, I do have a Kleinschmidt fork marked as 180vps.  I don't remember when I got it or why.  I do have a couple of TT-98's I need to restore so maybe that's why I got it.

I wanted to ask you, first, about how you are using your TT-4 to send e-mail (judging from the tagline).  I thought it typed very easily, had a good feel, when it was working.  I guess I could try re-adjusting the motor to run a little fast and see if that does anything for the printing issue although I know that seems completely illogical.

Are there any other areas besides the magnets that could be sensitive to oil/lubrication interfering?  I did what some people suggested and inserted pieces of paper between the armature and magnets to try to absorb any oil.  I also tried spraying it with contact cleaner and blowing it out with "canned air".  That seems to have helped a little but it still isn't working correctly.  One thing that seems to be better is that it now will run open when I turn off the loop supply.  Before it would not do that which also seemed illogical.  If I could get it to print ITTY, even garbage, then maybe any oil on the magnets, or other areas, would eventually burn off.

73

Kevin

W5TTY

KLI running fork is 180 vps.

Motor speed is not too crucial and would not make it stop printing.

Selector magnet area is quite sensitive.  Don't worry about Range control initially, just leave it at about 60.

Oil or gunk on the selector magnet pole pieces most likely problem, but with loop off, check that armature operates properly.

You should be able to turn motor by hand while manually moving armature and get it to print (type arm may not come up all the way)

Good luck

Duncan

K2OEQ 

Sent from my Kleinschmidt TT-4/TG, the US Army's first portable digital communications device, 1950-1980

-------- Original message --------

From: Steve Garrison <[email protected]>

Date: 10/3/22 06:09 (GMT-05:00)

To: "'Kevin H. Phillips'" <[email protected]>, 'Greenkeys' <[email protected]>

Subject: Re: [GreenKeys] Kleinschmidt TT-4C/TG not printing

I am assuming it is a tuning fork for a Kleinschmidt.  If it was one for a Teletype Corp machine it would not work very well.  I'm afraid I don't remember the freq of the tuning fork for a Kleinschmidt., but I have one or more around here somewhere, but I'd have to dig to find them.  Maybe better minds might remember.

Steve G./N4TTY

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Kevin H. Phillips
Sent: Sunday, October 2, 2022 09:05 PM
To: Greenkeys <[email protected]>
Subject: [GreenKeys] Kleinschmidt TT-4C/TG not printing

I think I've exhausted my limited thoughts on this so I'll refer this to anyone who really knows what they are doing.


I've been trying to get a TT-4C/TG running.  I had it typing pretty well
until I adjusted the motor speed and now I can't get it to replicate how
it was typing.  (I know:  if it ain't broke, don't fix it.)  I have a
tuning fork and adjusted the motor according to manual instructions and
it is running pretty steady. It had been running a little fast when the
machine was printing. I can't get it to print ITTY.  It won't even print
garbage.  The magnets lock up when the loop is energized.  I tried
adjusting the range and armature settings according to the manual but
that hasn't helped.   It will type a few characters correctly and then
type garbage.  I've been trying to type RY's with one hand while
adjusting the Range setting with the other.  Not very easy.   I am
suspecting something needs to be adjusted with the armature because
sometimes it will completely stop typing, won't do CR/LF, etc.  If I
turn off the power and the loop it will still remain in a "locked" state
until I manually push down on the armature.  It was very dry when I
first got it and I've been lubing it profusely.


Thanks in advance for any help.


73

Kevin

W5TTY

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