[GreenKeys] Model 15 Keyboard

[steve bennett]

 Just counted the keyboard gear teeth on my M15.
Machine was a RO for Associated Press so it didn't even have a keyboard originally
but for what it's worth the keyboard gear on the main shaft is 21T which is what the manual calls Bell System Standard.
That is in agreement with the gear on the keyboard John sent me. Also a bell system standard.
Whatever that means.

-Steve
     On Thursday, February 27, 2025 at 09:25:02 PM EST, E. <hanyou at xsmail.com> wrote:  
 
 
The Bell System and other systems have quite the different wiring schemes on the keyboards.  Could have the clutch, gear and contacts been sized differently, to compensate for some extra room being taken?

Not a 50 vs. 60 hertz thing.

(owner of two 19s that haven’t played much with them lately ;p )


> On Feb 27, 2025, at 8:08 PM, Tom Hunter <tomhenryhunter at gmail.com> wrote:
> 
> The model 15 keyboard is geared to the mainshaft and
> runs at whatever speed the mainshaft is turning.
> 
> To change speeds it is only necessary to change the
> motor pinion and the corresponding mainshaft gear.
> The keyboard will follow right along.
> 
> 
> Tom  N3CRK  - owner of five 15s
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