[Heathkit] Dial cord restringing

[b_hagen at sbcglobal.net]

Speaking as one that started out in about 1942 in the radio repair business
it isn't always fun. But it is much easier today: cyanoacrylate. Also it
would be helpful to have a minimum of three hands. Too often we try to get
away from doing the mechanics before installing the new dial cord. Do use
dial cord rather than the many other (bad) choices. Be sure the pullies are
lubed and free, does the tuning condenser rotate smoothly and freely. If the
cap is mounted with rubber grommets are they in good shape and the cap
pulley in alignment with the cord path? If it is a slide rule dial have you
cleaned and lubed the path for the pointed. It the knob shaft clean and the
shaft bearing/bushing lubed and free of wobble? I usually start with making
a loop with a touch of the glue on the knot. Place this on the condenser
pulley and run the cord through its path. Without the third hand forceps or
masking tape will help to keep it in place while you install the spring at
the end and attach and again a touch of glue on the knot. The spring should
be about 50% open. All Electronics has a spring that is correct about 50% of
the time for about $0.10. I'm no expert and hate dial cords but this does
work for me. Again though I do stress cleanliness. No wax, no rosin.

Bruce

-----Original Message-----
From: heathkit-bounces at mailman.qth.net
[mailto:heathkit-bounces at mailman.qth.net] On Behalf Of rbethman
Sent: Tuesday, May 15, 2012 1:35 PM
To: heathkit
Subject: [Heathkit] Dial cord restringing

This also was asked with the same references that I also have, i.e., the 
appropriate radio manual AND Sam's or Rider's documentation.

It is not the "path" of the dialcord, so much as it is geared to 
"technique".

I've gotten a few direct responses.

The theme has been the same.  "I've tried to do this on my XXXXX, and 
haven't had success"  "What are the hints/tips/secrets?".

I toss this out to the group.

I've achieved success on several different radios.  I attribute my 
success to trial, error, and patience.

I know that I've replaced the springs a few times with those from 
ballpoint pens.  I've also used the braided Dacron fishing line, in lieu 
of purchasing dial cord from the on-line emporiums.

I've also used waxed cord in one or two instances, when the cord wanted 
to slide in lieu of turning the grooved wheel on the tuning capacitor.

Anyone care to chime in with their ideas?

Bob - N0DGN
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