A close look seems to indication that the punch pins are all going a little too far. The hinge side of the chad appears to have some tearing that raises the hinged side above the rest of the tape. Worse on #5 pin to the point of tearing the edge off.
I see a screw labeled upstop screw. That looks like it would be the adjustment to change the stroke length of the punch pins. I haven't found the paragraph which describes its adjustment yet. (figure 49 in 165B PDF page #82) Figure 44 on PDF page # 83 appears to indicate the allowed difference in distance between the bottom of the punch pin and the punch selector fingers.
I think I need to do a little more research because I think I see
another possible place to make an adjustment.
https://www.navy-radio.com/manuals/tty/jh/ttyman4/TeletypeManuals/model14/165B_Change1.pdf
--- ---- The above comments or recommendations are SWAG. Use at your own risk. John, W9DDD
Sharpen it? Take a close look. Is it dull?
On Tuesday, January 4, 2022, 03:59:08 PM EST, John W9DDD <[email protected]> wrote:
I seem to be closing in on this one, but the #5 punch is shall we say a little aggressive. This is a chadless punch, but I'm getting chads at times from #5 punch pin and it ends up at times having that edge of the tape splitting off. Any adjustments I've identified would seem to affect all 5 pins.
Hints gratefully accepted.
Oh I almost forgot, perhaps the old semi brittle tape contributes to the problem?
John, W9DDD
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