[GreenKeys] TT-100G Selector Assembly

[Steve Garrison]

Are you referring to having power on or off when you manually moved the armature to mark or space.  With power on and no loop current the armature should move back to "space" due to the bias current through the magnets.  With power off I've seen them stay either way; sometimes dependent on the adjustments on the leaf springs on the armature.  I'm calling them leaf springs at the moment as I not sure I remember the proper terminology after 40 some odd years with out consulting a manual.  (Just checked a manual!)  And they are referred to as "armature leaf springs" on models that have them (think the TT-100 did), and the adjustment for them is that it should take 10 grams of force to move armature from mark to space and from space to mark with the selector magnets de-energized.  That being said, the armature should stay in whichever position it is manually set when not powered on.

Hope that helps.

Steve G./N4TTY


> On Jan 5, 2014, at 8:16 PM, "The Rices" <srice3 at cfl.rr.com> wrote:
> 
> Question for those that might know more about these then me. (Not hard)
> 
> I found the reason the keyboard was not accurate in sending to the typing unit was a couple of reasons but one was the fact that the screws,nuts etc. were loose on the Selector magnet assembly. I have removed the assembly and see that someone had started to make adjustments and stopped.
> 
> Now it is my turn and I have a question. When I reset the selector magnet to the proper clearance before any other adjustments should I be able to move the armature to mark or space and it stay there until I move it to the opposite ? Before it was loading back to the space side when it was idle. I wanted to be sure before proceeding to the next step.
> 
> One other question, the manual says armature adjustment is parallel within .002 inch but parallel to what?
> 
> Oh, it has a 1 3/4 magnet and I have set it at .004 from the armature if that helps and have the armature adjustment screw backed out at the present time.
> 
> Any help would be appreciated.
> Thanks
> Steve
> N4YZA 
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