Heathkit SB Line Dial Drive Assembly

[Rick Parent]

Hi Gang...

            Been away for awhile.....OOOoohhhh 25 years or so. Built my
share of "greenies" when I was younger and never remember having a lot
of trouble with dial drives on SB's. Had a 101 and a 102. I remember the
dial drives being pretty smooth, considering their makeup. Recently,
I've decided to get reacquainted with this addiction of ours and have
bought a 300, 400, and a 101 in the last couple of weeks. ALL THREE have
the dreaded "Dial Drive Disease"!! Looks to me like the dial drive
pulley (#100-444) is just spinning (with the knob - of course) and not
making contact with the Dial Drive Ring (or Circular Dial Plate Assembly
#100-M449). I'm guessing this because I haven't actually pulled any of
the front panels. Just been squinting behind the panels, with a
flashlight, looking down the front side of the chassis trying to figure
out why the hell the numbers aren't moving 'round anymore! Am I all wet
here? Is there something I'm missing? Or am I just incredibly lucky to
have gotten three examples of shoddy assembly practices? Would think
that this has got to be a really common problem, since I'm batting 3 for
3! Anybody have a source for these parts? I'd really like to get my
hands on the "whole bag" of goodies (#100-M450 - Dial Drive Assembly).
I'm thinking that there's a real opportunity here to made some money
going into production!

Also looking for the AM Filter (#404-201 - 3.75khz), FL3, for an SB-300.

Thanks & 73's!

Rick Parent,  KA1GBJ
rparent at sky.net

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