[AMPS] Chassis for HB Amps

[Barry Kirkwood]

Find a roofing or sheetmetal shop. They have guillotines and metal bending
breaks.
If necessary get them to buy in a sheet of aluminium of the weight you need.
They will cut panels for little cost.
Generally speaking it is better to make amp chassis and cases from flat
sections and use L section alumin available at most hardware houses to join
sections. The plates can be attached to the L with pop rivets, or bolted if
needed to be dismantled.
Many sheetmetal shops also have dies to punch holes in the plates for tube
sockets etc.
Easypeasy, good, and cheap.
73

end
Barry Kirkwood PhD ZL1DD
Signal Hill Homestay
66 Cory Road
Palm Beach
Waiheke Island 1240
NEW ZEALAND
www.waiheke.co.nz/signal.htm
----- Original Message -----
From: Arne Gjerning <gjerning@flash.net>
To: Mark Fancher <mmfancher@earthlink.net>; Amps <amps@contesting.com>
Sent: Sunday, 30 December, 2001 1:33 PM
Subject: Re: [AMPS] Chassis for HB Amps


>
> I have a start on pr of 3-500Z and use a BUD 15Dx17Wx4H ($61.00) for lower
> section and a BUD 15Dx17wx6H ($86.00) for upper section. All this goes
> behind a 10.5 inch high 19" high rack panel.  Prices were from a 1995
NEWARK
> catalog, bit pricy to say the least. (I have had these chassis for a long
> time). It is possible to buy 15x17 plates from BUD also for bottom/top
> covers, but suggest hardware store.
>
> Just a possiblilty or use flat sheets of aluminum and some angle and bolt
it
> together.
>
> Prices these days really hurt the budget and its hard to find what you
need
> in many cases in small qty.
>
> Good luck with the project.
>
> 73 de Arne N7KA
>
> BTW, I now get lucky at work and can get scrap pieces of al in many
> thickness and have it cut to size.
>
> ----- Original Message -----
> From: "Mark Fancher" <mmfancher@earthlink.net>
> To: "Amps" <amps@contesting.com>
> Sent: Monday, December 31, 2001 2:23 PM
> Subject: [AMPS] Chassis for HB Amps
>
>
> >
> > All:
> >
> > I've come across some 3-500Z tubes.  I'm thinking about building up the
> > W1QWJ amp from the ARRL handbook.
> >
> > I think the amp circuit is fairly understandable to me.  The most
> difficult
> > part of this, for me at least, is the chassis.  Is there a way to
purchase
> > one prefab?  I don't have my own machine shop, and I can imagine running
> > back and forth to one would cost frustration, time and money.
> >
> > Any suggestions?
> >
> > Thanks!
> >
> > Mark Fancher
> > mmfancher@earthlink.net
> >
> >
> >
> > --
> > FAQ on WWW:               http://www.contesting.com/FAQ/amps
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> > Problems:                 owner-amps@contesting.com
> >
>
>
> --
> FAQ on WWW:               http://www.contesting.com/FAQ/amps
> Submissions:              amps@contesting.com
> Administrative requests:  amps-REQUEST@contesting.com
> Problems:                 owner-amps@contesting.com
>
>



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