[AMRadio] Replacement Part Query

Sat Mar 10 18:32:12 EST 2012

Ok, Now can you tell me the distance between the mounting holes and what size they are?  I will cut one out and fab the holes after I get your information.  I will probably make two one of one thin and the other a little thicker.  Let me know where to mail them in your response.

Mel

--- On Sat, 3/10/12, Todd, KA1KAQ <ka1kaq at gmail.com> wrote:

From: Todd, KA1KAQ <ka1kaq at gmail.com>
Subject: Re: [AMRadio] Replacement Part Query
To: "Discussion of AM Radio in the Amateur Service" <amradio at mailman.qth.net>
Date: Saturday, March 10, 2012, 2:26 PM

Looks to be just over 1/4" wide, Mel, but 3/8" would likely give it a bit
more strength around the screw holes where it attaches to the pulleys.
Looks to be roughly 18" long, hard to tell since it has a patch in it and
the original ends are a bit ratty. No idea of the thickness - it needs to
rap 180 degrees around  a pair of 3/4" smooth wheels/pulleys without
kinking, if that matters. I'll send you a couple photos of the broken
strap, though it probably won't be much help as it's a mess.

If you come across something, let me know the cost with shipping and I'll
send off payment. Would be happy to get ahold of a replacement, otherwise
the plastic/fiber belt approach suggested by folks would be the next
option. Since the strap is held on both pulleys by a screw, slipping
shouldn't be an issue.

TNX to all for the suggestions. While taking the above measurements, my
wife asked what I was doing. When I told her, she said "That sure was
fast". Indeed!

~ Todd,  KA1KAQ/4

On Sat, Mar 10, 2012 at 4:56 PM, Mel Farrer <farrerfolks at yahoo.com> wrote:

> Todd, also give me some deminsions, I have quite a bit of
> copper(beryllium?) strap material of several thicknesses.
>
> Mel, K6KBE
>
> --- On Sat, 3/10/12, Todd, KA1KAQ <ka1kaq at gmail.com> wrote:
>
> From: Todd, KA1KAQ <ka1kaq at gmail.com>
> Subject: [AMRadio] Replacement Part Query
> To: "Boatanchors" <boatanchors at mailman.qth.net>, "Discussion of AM Radio
> in the Amateur Service" <amradio at mailman.qth.net>
> Date: Saturday, March 10, 2012, 12:38 PM
>
> Have been in the process of restoring a nice set of Heathkit Indians
> (Apache & Mohawk) to put back on the air. The Mohawk is set and the Apache
> would've been, but a final checkout before re-installing in the cabinet
> produced a snapped copper(beryllium?) tuning strap for the FINAL control. I
> would guess by the looks of this one that it is a fairly frequent failure
> part in rigs that see a lot of use. This one has been repaired at least
> twice, including a piece spliced into it. Apparently this made the strap
> too long, so the original owner ran it below one of the other shafts to
> take up the slack, adding tension into the equation and assuring a future
> failure.
>
> Before attempting to make one, which will require tracking down the
> material and tools to properly fabricate it, does anyone make replacement
> straps? If not, I'll probably go with something along the lines of the
> material used in tie wraps or another durable plastic rather than this
> stuff again.
>
> Thanks -
>
> ~ Todd,  KA1KAQ/4
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