ASR 33 not horizontally spacing

[Philip Pemberton]

Tony Duell wrote:
> The carriage is moved bu the toothed belt at the front. At the left end 
> of this is the drive sprocket, bolted to a ratchet wheel. There are some 
> pawls (2, one for moving it, one to prvenet it running back?) that 
> operate on this wheel. They're lifted off the wheel during a carriage 
> return (so the spring can pull the carriage back to the left) and them 
> drop back into engaagement on the next character (IIRC). I'd start buy 
> checking this area. Maybe something is bent or out of place.

Doesn't look like the pawls (or at least one of them) are engaging:

http://vintagecomputer.net/teletype/asr33/2009/ASR33-1.jpg

It's hard to tell, but it looks to me that either the pawl is too low to 
catch the ratchet gear, or it's standing proud of the gear. If the base 
metal (or the pawl) were a different colour, it might be easier to tell..

This image implies that it's just plain disengaged, though I can't tell 
for certain what angle it was taken at (whether it's showing the 
frontside 'ASR33-1' view, or the opposite side):

http://vintagecomputer.net/teletype/asr33/2009/ASR33-8.jpg


-- 
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/