[ARC5] [ART-13_Transmitters] ATC/ART-13 Maintenance Autotune Crank

[J. Forster]

Seeing the print, I am now convinced the longer screw is to allow the
crank to be disengaged, without fully removing it.

YMMV,

-John

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> Under the "tilting at windmills" rubric, I thought perhaps a web page
> dedicated to the lovely and popular ATC/ART-13 maintenance autotune
> crank might be in order.  If one has a home machine shop or friend with
> one, they could easily make it from the fabrication drawings I sketched
> up from an original crank (grateful thanks to AB5S) at
> http://aafradio.org/garajmahal/ART-13_lineshaft_crank.html
>
> I've made a couple of them for friends (out of stainless steel rather
> than the original Type I cadmium plated steel because I prefer the look
> and feel of stainless), and they aren't difficult to make.  It's a nice
> Saturday morning project.  I added a knurled thumbscrew with a 4-40
> thread to make it easier to attach to the end of the line shaft.  It
> eliminates twiddling with a screwdriver, though not the danger of loss
> through Murphy's efforts.  I keep it tied to the crank with a nut when
> I'm not using the crank.  That way only the nut gets lost when you're
> using it....:-)
>
> 73 and Happy Easter,
>   - Mike   KC4TOS
>