Also, check with Bob Grinnell at Surplus Sales of Nebraska. Their minimum
order amount may be less than R.F. Parts Company.
http://www.surplussales.com/Variables/Compression/CompCap1.html
-Paul, W9AC
----- Original Message -----
From: "Radio WC6W" <wc6w@juno.com>
To: <dezrat1242@ispwest.com>; <amps@contesting.com>
Sent: Saturday, September 11, 2004 9:55 AM
Subject: Re: [Amps] ARCO compression trimmer caps
> On Sat, 11 Sep 2004 06:01:29 -0700 Bill Turner <dezrat1242@ispwest.com>
> writes:
> > Frustration! I have pair of ARCO compression trimmers I want to use
> > in a single-band amp in the input pi-network circuit and one of them
> > has lost the mounting nut. This is a non-standard thread and even my
> > well-stocked box of spare nuts and bolts comes up empty. The local
> > hardware store has an extensive supply of US and metric nuts and
> > still nothing. An experienced machinist friend guesses it might be a
> > 12-40 thread, but he's not sure.
> >
>
> Hi Bill,
> Sounds like you are dealing with a type 30 padder.
>
> Your friend is correct about the size. The thread is standard,
> albeit rare.
>
> > Dan's Small Parts has the trimmer for sale with a note "NO MOUNTING
> > NUT SUPPLIED..YOUR LOCAL HARDWARE STORE SHOULD HAVE THAT....".
> >
> > Yeah, right. :-)
>
> I'll second that.
>
> >
> > Any one know what the thread is or where I can get one?
>
> I tried looking for some of those myself (including an internet
> search) a couple years ago with no success. I was even considering
> making a few nuts from brass hex stock but, a 12-40 tap also proved
> elusive, special order, and was quoted around $25.
>
> >
> > Thanks in advance,
> >
> > --
> > 73, Bill W6WRT
>
> 73 & Good morning,
> Marv WC6W
>
>
>
>
>
>
>
>
>
>
> *
>
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