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Source for copper Concorde bolt

vorlon1

By vorlon1
in General Mooney Talk

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vorlon1 Proficient

vorlon1

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Posted (edited)

So I'm looking at the cable connections to the Concorde battery and they are attached via an M8x1.5x16mm COPPER bolt. They're showing their age (unknown) and I would like to replace them, but I can't find a source in the US. Anybody have an idea where I can get these without waiting for weeks?

Edited by vorlon1
add detail to bolt specs
vorlon1 Proficient

vorlon1

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  On 12/28/2022 at 9:20 PM, N201MKTurbo said:

You could ask me to send you one from an old battery in my hangar.

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Yes please!

Should I infer that new batteries should come with them? My battery is only 3.5 years old--and dead I'm afraid--but the bolt looks much older...

N201MKTurbo Grand Master

N201MKTurbo

Posted
Posted
  On 12/28/2022 at 9:31 PM, vorlon1 said:

Yes please!

Should I infer that new batteries should come with them? My battery is only 3.5 years old--and dead I'm afraid--but the bolt looks much older...

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Yes, batteries come with bolts. If you are buying a new battery, you don't need new bolts.

A64Pilot Grand Master

A64Pilot

Posted
Posted

It’s not copper but I forget what  it is, They are readily available, I bought a bunch on my boat as I was building bus bars

I think it’s silicon bronze or maybe beryllium copper?

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vorlon1 Proficient

vorlon1

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  On 12/28/2022 at 11:17 PM, A64Pilot said:

Hate to say just google, silicon bronze is common, often used in boats.

Metric will be a little harder. 

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Yeah, I was looking for copper. I had looked at the Concorde site, but missed that call out.

Thanks.

Hank Grand Master

Hank

Posted
Posted
  On 12/28/2022 at 9:55 PM, A64Pilot said:

I think it’s silicon bronze or maybe beryllium copper?

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Beryllium copper was phased out years ago, it's a carcinogen. Used to be used a lot in injection molding, now other copper alloys are used.

N201MKTurbo Grand Master

N201MKTurbo

Posted
Posted
  On 12/29/2022 at 3:16 AM, Hank said:

Beryllium copper was phased out years ago, it's a carcinogen. Used to be used a lot in injection molding, now other copper alloys are used.

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I needed a piece for a project at work. You can still get it on EBay out of China. Luckily, I found an old relay in my junk box and was able to salvage a contact and gave it to the machine shop and they made the part I needed. I hope they didn’t get berylliosis. The part worked great.

vorlon1 Proficient

vorlon1

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Follow up:

After looking all over the interweb, I called Concorde, and they indicated that these are hard to find by design to discourage those with a "do-it-yourself' attitude.

As indicated by Mike Elliot above, Concorde with send you some if you call them.

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Guest

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Posted
Posted
  On 1/5/2023 at 9:07 PM, vorlon1 said:

Follow up:

After looking all over the interweb, I called Concorde, and they indicated that these are hard to find by design to discourage those with a "do-it-yourself' attitude.

As indicated by Mike Elliot above, Concorde with send you some if you call them.

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I’ve got a cup of them from retired batteries if you need some.

A64Pilot Grand Master

A64Pilot

Posted
Posted

They are just standard 8mm silicon bronze bolts, no special thread etc.

But for some reason 8mm silicon bronze bolts are hard to find, but I doubt that’s by Concorde’s design. 8MM is very close to 5/16” and is a standard battery terminal size.

They use the same bolts on their non aviation Lifeline batteries.

I believe I bought copper bars and 5/16” silicon bronze bolts to make bus bars from Georgia Copper and some copper strap for my High Freq radio ground, but I don’t think they have 8mm.

jetdriven Grand Master

jetdriven

Posted
Posted
  On 12/28/2022 at 10:05 PM, A64Pilot said:

Terminals and bolts are silicone bronze

https://legacy.concordebattery.com/flyerprint.php?id=149

Our General Aviation batteries are designed with terminals and hardware of silicon bronze alloy providing a corrosion free, low impedance connection.

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The torque on these is 70 inch pounds and they strip out at 72 inch pounds. 

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