[GreenKeys] More 28 reperf hammer head photos

[Mark J. Blair]

> On Jan 14, 2020, at 8:24 AM, Nick England <navy.radio at gmail.com> wrote:
> 
> To fit the test head, I followed Mark's lead about pulling the hammer lever and ribbon guide out the back side of the LPR. 
> http://www.navy-radio.com/tty/lpr-hammer/lpr-lever-rear.jpg
> http://www.navy-radio.com/tty/lpr-hammer/lpr-lever.jpg
> 
> That was a somewhat painful process, but I just couldn't imagine taking off the faceplate to get at the hammer - particularly because this LPR has a powered backspace mechanism. 

I see that you did exactly the same thing that I did: unscrewing the entire hammer arm mounting bracket, and leaving the ribbon guide in place. I was a bit worried about regretting taking out the pin that the hammer arm pivots on.


> http://www.navy-radio.com/tty/lpr-hammer/lpr-faceplate.jpg

Mine also has the powered backspace, but it has a slot for a screwdriver instead of a nice knob on the manual tape feed shaft. The auxiliary punch in my unit has the nice knob. I don't understand the function of the little toothed bar that pivots down over the tape while backspacing. I suspect it has something to do with managing the deliberately hanging chads on my chadless punch, but mine just seems to mangle tape if I backspace more than about one character. And it seems difficult to backspace in a controlled manner, at least on my machine.

> LPR disassembly/reassembly jobs run the gamut from insanely difficult to impossible...
> Once we have some heads that work, we'll need a YouTube video showing how to fit it.

Agreed! It would be nice if a few of us make videos, preferably with various different punch configurations.


-- 
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/