[Hallicrafters] Dial Cord -- Slip No More Forever

[Glen Zook]

The "stretching" of dial cords is one reason that
springs are normally part of the mechanism.  Whenever
I have to restring a dial, I always make sure that the
springs are not only in place, but that they put a lot
of tension on the dial cord.  That way, when the dial
cord stretches, the spring will take care of it.  If
you install the spring such that it is not on the very
end, but such that it is in the "middle" of a span,
then the spring will "take up" twice as much stretch
of the dial cord.  This is "akin" to mechanical
advantage when using pullys.

Glen, K9STH

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