[GreenKeys] M15 printing gibberish

[E.]

Polarity *should* matter — at least diagrams suggest.  Looks like one of your vanes are a little bent… but it sounds like the motor isn’t keeping a proper speed.  Are the two dash post on the motor oiled?

Now having watched the video a fifth time, it looks like your type basket is inconsistent on striking.  There should be a consistent back and forth distance with the part that slides between the printing bail.  Is that one part on the typing basket (which I can’t find the name for right now) properly seated between the two metal pieces on the bail?

It also might have to do with your type basket not progressing and hitching up things maybe… I’d focus on whatever is causing it to not move and see if that frees up the rest.


> On Jan 29, 2025, at 11:07 PM, steve bennett via GreenKeys <greenkeys at mailman.qth.net> wrote:
> 
> Does polarity of the TU matter if I'm connected directly to the selector magnets? (no line/polar relay)
> I wouldn't think so.
> When I turn on the TU the machine stops running open. The magnet pulls in and  holds.
> When receiving ITTY machine types but it's the wrong characters....gibberish.
> The meter on the TU reads a little over 60mA.
> How many teeth should my gear have for ITTY?
> Maybe it has been sped up?
> You can hear the speed of my machine at the link I posted previously.
> I'll include it again here.
> Using ITTY to test a Teletype machine
> 
> Using ITTY to test a Teletype machine
> Discover topics like model 15, teletype, itty, and the magic of the internet at Imgur, a community powered enter...
> 
> -Steve