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longg(at)pjm.com
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 Posted: Tue Sep 01, 2009 6:10 am Post subject: [Probable SPAM] Re: Why Brass Bolt for ground terminal? |
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Bob,
Wow, I really appreciate your craftsmanship effort, but why would you build one of these? B & C sells them relatively cheaply and they are perfect for the job. Drill a hole, add the appropriate number of washers and move on.
Glenn
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of bob noffs
Sent: Tuesday, September 01, 2009 7:28 AM
To: aeroelectric-list(at)matronics.com
Subject: [Probable SPAM] Re: Why Brass Bolt for ground terminal?
the brass bolt will carry the current thru the firewall to the ''forest of tabs'' you will mount on it on the cabin side of the firewall.
bob noffs
On Mon, Aug 31, 2009 at 9:23 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>
At 08:00 PM 8/31/2009, you wrote:
--> AeroElectric-List message posted by: dave.gribble(at)mchsi.com (dave.gribble(at)mchsi.com)
I'm building a firewall ground terminal system consisting of faston tabs soldered to sheets of brass stock. I'll sandwich these around the RV firewall (thin stainless steel) and use a big bolt on one side to attach the battery and engine ground straps to.
I see that the B&C version of this calls for a brass bolt - what is the reason for this, and also what size of bolt to use? I assume it is a dissimilar metals corrosion problem... I have designed for a few smaller #8 bolts to hold the brass sheets together.. do these have to be brass too?
If the Big bolt is long (like through a composite
firewall) the brass bolt is preferred for electrical
conductivity. But for a thin firewall, regular AN
hardware is fine. The #8 hardware is mechanical only,
plain vanilla AN hardware there too.
Bob . . .
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( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
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