[ARC5] Brass-tubing tuning-adapter.

[hwhall at compuserve.com]

In my 1970 edition of Tom Kneitel's "Surplus Conversion Handbook" there is a one page article, "Bandspreading ARC-5 Receivers", that describes a band spread scale that attaches to the knob that drives the spline shaft.
 

 Wayne Hall
WB4OGM

 

-----Original Message-----
From: Bill Cromwell <wrcromwell at gmail.com>
To: arc5 <arc5 at mailman.qth.net>
Sent: Wed, Aug 27, 2014 11:15 am
Subject: Re: [ARC5] Brass-tubing tuning-adapter.


Hi Ken,

On *one* BC-453 I used a piece of soft plastic tubing that was a press 
fit over the spline. *Soft* plastic. It has been working for six years 
and no reinforcements, clamps, braces, shims, or U.S. cavalry needed. I 
am going to use the brass just as you have described for my other 
receivers so I can use larger knobs.

I'm also working on a vernier scale for the dials on these. No 
modifications to the radio needed. Our misuse and abuse of "vernier" to 
mean a speed reduction drive must be pointed out here. I mean a real, 
true *vernier* scale that will rest on the front panel, aligned behind 
and used with the original dial. More about that later.

On 08/27/2014 11:31 AM, Kenneth G. Gordon wrote:
> I am curious: has anyone except myself even yet tried my 1/4" brass-tubing
> adapter?
>
> I have not found it necessary to either reinforce it, nor to solder or glue it 
in
> place.
>
> It has always been quite stable, and strong enough, and tight enough for my
> purposes.
>
> Ken W7EKB
>

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