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jbr79r(at)yahoo.com
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 Posted: Thu May 05, 2011 6:14 am Post subject: Firewall pass through |
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I am changing my batteries from in front of the firewall to behind the seat. The existing firewall pass through bolts are 1/4" . Will this still be sufficient for bringing power from inside back to the engine compartment?
Jim
James Robinson
Glasair lll N79R
Spanish Fork UT U77
From: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com>
To: aeroelectric-list(at)matronics.com
Sent: Wed, May 4, 2011 4:58:21 PM
Subject: Re: Harbor Freight Hydraulic Crimper
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>
At 05:31 PM 5/4/2011, you wrote:
| Quote: | HFT sent me a 20% off coupon with no limit on sale items so I treated myself to one of their Hydraulic Crimping Tools (part no 66150) for $39.95. When I got it home I was surprised at how small the crimping dies were. I'm not sure they're sized for the wire, much less the connector.
The picture shows the AWG 4 dies with an Amp # 4 connector.
Does anyone have experience using this tool? I'd like to hear from you before I make up my mind whether to keep the tool or not.
|
Go ahead and put a terminal onto a 4AWG wire
and see what it looks like. I might have you send
me the installed terminal and I'll slice it open
for microscopic examination. How
[quote][b]
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longg(at)pjm.com
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| Posted: Thu May 05, 2011 6:40 am Post subject: Firewall pass through |
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Jim,
Are the ¼ bolts built into a firewall device designed specifically for passing cables through? If so, does it have a rating? I’ve seen similar in the racing world where they bolt the connection through. These work perfectly fine so long as you have the correct device intended for the job.
The below uses a 3/8 bolt, but there are many variations on this product. If you go this route be sure to protect the exposed bolt from contact with other gremlins. Some come with covers.
http://www.google.com/products/catalog?hl=en&biw=1403&bih=738&q=firewall+battery+terminals&um=1&ie=UTF-8&cid=15926373037678662275&sa=X&ei=YrXCTYqEI-rj0QGkkqXtAw&ved=0CEMQ8wIwAw#
Glenn E. Long
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of James Robinson
Sent: Thursday, May 05, 2011 10:10 AM
To: aeroelectric-list(at)matronics.com
Subject: Re: Firewall pass through
I am changing my batteries from in front of the firewall to behind the seat. The existing firewall pass through bolts are 1/4" . Will this still be sufficient for bringing power from inside back to the engine compartment?
Jim
James Robinson
Glasair lll N79R
Spanish Fork UT U77
[quote] [b]
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nuckolls.bob(at)aeroelect
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| Posted: Thu May 05, 2011 7:10 am Post subject: Firewall pass through |
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[img]cid:7.1.0.9.0.20110505095632.01db3008(at)aeroelectric.com.0[/img]
Fire wall feed-thru products like this are electrically
adequate and VERY convenient. Just be aware that plastic
insulators would not pass muster in the TC aircraft
world with respect to maintaining fire wall integrity.
Admittedly, fuel fed fires under the cowl are VERY
rare events . . . and we know that those-who-know-more-
about-airplanes-than-we-do are fond of writing rules
for mitigating the rarest of risks.
A lighter, less elegant but time honored and much tested
approach is to bring unbroken wires through the fire wall
protected by shielded grommets and sealed with a fillet
of fire-putty on the engine side.
It's your airplane . . . your call.
Bob . . .
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dan(at)azshowersolutions.
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| Posted: Thu May 05, 2011 2:52 pm Post subject: Firewall pass through |
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Concerning firewall pass-through trinkets...I found a company called Precision Grommets and they will custom make these in a variety of materials and sizes. Here is a blip on how I put them in my Kitfox http://www.azshowersolutions.com/Engine13.html
I was very happy with their service and product.
Dan
[quote]
From: "longg(at)pjm.com" <longg(at)pjm.com>
To: aeroelectric-list(at)matronics.com
Sent: Thu, May 5, 2011 7:37:12 AM
Subject: RE: Re: Firewall pass through
Jim,
Are the ¼ bolts built into a firewall device designed specifically for passing cables through? If so, does it have a rating? I’ve seen similar in the racing world where they bolt the connection through. These work perfectly fine so long as you have the correct device intended for the job.
The below uses a 3/8 bolt, but there are many variations on this product. If you go this route be sure to protect the exposed bolt from contact with other gremlins. Some come with covers.
http://www.google.com/products/catalog?hl=en&biw=1403&bih=738&q=firewall+battery+terminals&um=1&ie=UTF-8&cid=15926373037678662275&sa=X&ei=YrXCTYqEI-rj0QGkkqXtAw&ved=0CEMQ8wIwAw#
Glenn E. Long
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of James Robinson
Sent: Thursday, May 05, 2011 10:10 AM
To: aeroelectric-list(at)matronics.com
Subject: AeroElectric-List: Re: Firewall pass through
I am changing my batteries from in front of the firewall to behind the seat. The existing firewall pass through bolts are 1/4" . Will this still be sufficient for bringing power from inside back to the engine compartment?
Jim
James Robinson
Glasair lll N79R
Spanish Fork UT U77
[b]
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longg(at)pjm.com
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| Posted: Fri May 06, 2011 6:05 am Post subject: Firewall pass through |
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Dan,
Those are nice. I've used the wire grip connectors which are also aesthetically appealing and are readily available at good prices. I normally plug them with fire-goop from the rear as not to take away from appearances on the front.
Glenn
--
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