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Alan Leslie
The fact that it is only milliamps makes the conductivity very important. Even a slightly bad connection at the keel bolt will make the keel rust. Best to use 3mm flat copper bar to make the best conductor for the bonding system.
Cheers
Alan
Elyse SM437
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Alan, I believe you have hit the nail on the head. It’s all about the resistance at the joint to the bolt. A wide flat strap provides the maximum surface contact area between the strap and the bolt. That is the most effective way to minimise the resistance at the joint. A thicker flat strap (than the original) will provide similar resistance (when properly installed) and better longevity.
I’m not looking forward to this job when my time comes, sounds really awkward!
Dean SY Stella A54-154
X
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Bill,
I also considered using wire for the bilge bonding but I liked the idea of the heavier copper bar that you suggested and went that route. I think that wire or a thin strap is pretty easy to damage over time with bilge cleanings. I covered my new copper with very heavy glue coated shrink wrap which hopefully will make it last even longer and no sharp edges. The stiffness of the thicker bar also made it easy for me to place the end of the bar on the keel bolt and to hold orientation as the keel bolt was tightened.
James SV Sueno Preveza, Greece
Sent from Samsung tablet.
-------- Original message -------- From: CW Bill Rouse <brouse@...> Date: 10/21/19 12:06 AM (GMT+02:00) To: main@amelyachtowners.groups.io Subject: Re: [AmelYachtOwners] Ground strap in bilge
Copper wire should work. I still prefer copper bar. On Sun, Oct 20, 2019, 2:53 PM Ross Hickey & Donna Hammond via Groups.Io <southernadventurer= yahoo.co.uk@groups.io> wrote:
Hi Bill what’s your thoughts on using copper wire, instead of the strap. Will this provide enough electrical conductivity?
Regards
Ross SV INTREPID KIWI SM2K 356 Currently Croatia Sent from Yahoo Mail for iPadOn Sunday, October 20, 2019, 9:34 PM, CW Bill Rouse <brouse@...> wrote: This is the one and only time that I will say that the Amel OEM part is not the best part.
Amel uses a thin copper foil for the bonding strap inside the gray water bilge. In terms of electrical conductivity, it is perfect. In terms of durability it is not good enough. The gray PVC float switch tube sits on top of the copper foil and will wear through the copper foil in a few years. If you buy the Amel OEM copper foil, I suggest you buy 2 because you will likely need to replace it again in a few years.
That is awesome Robin.
I will be onto it in the morning.
All the best,
Randall
I think it was around 90 euros — just tell them the bonding strap for the bilge of a SM — they will know what it is.
It was easy to get to the cables but was a problem to loosen the nut on the keelbolt as we needed a special high tool (30 mm) as the boöt was to high for a normal one.
Robin
Amel 54 # 54
Carré d‘As
Gesendet von Yahoo Mail für iPad
Am Sonntag, Oktober 20, 2019, 19:20 schrieb Randall Walker <lladnarowen@...>:
Thanks Robin,
Did you have an part order # for the strap. I'm in Spain and you would think copper is gold down here. I just cant find a supplier.
I am looking at doing the mast step as well. Eight hours you say, were the wires easy to get at?
Thanks again,
Randall
54 #56
I got mine from Amel — you can check on our Blog
Robin
Amel 54 # 54in Roda de Bara
Carré d‘As
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We used www.metelec.co.uk and sent Bill’s dimensions with a drawing and they produced a perfect replacement delivered promptly. The key to a successful job was a ‘deep’ socket for the nut at the bottom of the bilge. Mike & Peta Solitude SM2K 461
toggle quoted messageShow quoted text
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Randall Walker
Sent: 20 October 2019 21:19
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Ground strap in bilge I am sitting south of Barcelona. One group member put me onto a German supplier, a former AMEL owner is trying to source it out of Britain and I have been told AMEL does still have them. Glad I joined this group. And Bill I agree that the original are way too thin.
This is the one and only time that I will say that the Amel OEM part is not the best part. Amel uses a thin copper foil for the bonding strap inside the gray water bilge. In terms of electrical conductivity, it is perfect. In terms of durability it is not good enough. The gray PVC float switch tube sits on top of the copper foil and will wear through the copper foil in a few years. If you buy the Amel OEM copper foil, I suggest you buy 2 because you will likely need to replace it again in a few years. I will be onto it in the morning.
I think it was around 90 euros — just tell them the bonding strap for the bilge of a SM — they will know what it is. It was easy to get to the cables but was a problem to loosen the nut on the keelbolt as we needed a special high tool (30 mm) as the boöt was to high for a normal one. Carré d‘As
Gesendet von Yahoo Mail für iPad Am Sonntag, Oktober 20, 2019, 19:20 schrieb Randall Walker <lladnarowen@...>: Did you have an part order # for the strap. I'm in Spain and you would think copper is gold down here. I just cant find a supplier. I am looking at doing the mast step as well. Eight hours you say, were the wires easy to get at?
I got mine from Amel — you can check on our Blog Amel 54 # 54in Roda de Bara
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Mike,
That is so funny I have just sent them an email to have one shipped to me hear in Spain. Just seconds ago.
Thanks,
Randall
A-54 #56
toggle quoted messageShow quoted text
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> on behalf of Mike Johnson via Groups.Io <mike.k.johnson@...>
Sent: October 21, 2019 10:37 AM
To: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
Subject: Re: [AmelYachtOwners] Ground strap in bilge
We used
www.metelec.co.uk and sent Bill’s dimensions with a drawing and they produced a perfect replacement delivered promptly.
The key to a successful job was a ‘deep’ socket for the nut at the bottom of the bilge.
Mike & Peta
Solitude
SM2K 461
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
On Behalf Of Randall Walker
Sent: 20 October 2019 21:19
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Ground strap in bilge
I am sitting south of Barcelona. One group member put me onto a German supplier, a former AMEL owner is trying to source it out of Britain and I have been told AMEL does still have them.
Glad I joined this group.
And Bill I agree that the original are way too thin.
This is the one and only time that I will say that the Amel OEM part is not the best part.
Amel uses a thin copper foil for the bonding strap inside the gray water bilge. In terms of electrical conductivity, it is perfect. In terms of durability it is not good enough. The gray PVC float switch tube
sits on top of the copper foil and will wear through the copper foil in a few years. If you buy the Amel OEM copper foil, I suggest you buy 2 because you will likely need to replace it again in a few years.
I will be onto it in the morning.
I think it was around 90 euros — just tell them the bonding strap for the bilge of a SM — they will know what it is.
It was easy to get to the cables but was a problem to loosen the nut on the keelbolt as we needed a special high tool (30 mm) as the boöt was to high for a normal one.
Carré d‘As
Gesendet von Yahoo Mail für iPad
Am Sonntag, Oktober 20, 2019, 19:20 schrieb Randall Walker <lladnarowen@...>:
Did you have an part order # for the strap. I'm in Spain and you would think copper is gold down here. I just cant find a supplier.
I am looking at doing the mast step as well. Eight hours you say, were the wires easy to get at?
I got mine from Amel — you can check on our Blog
Amel 54 # 54in Roda de Bara
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|
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Ross Hickey & Donna Hammond
Hi Mike,
Thanks for supplying the details of metelec. We are keen to replace our strap. Are you able to supply the dimensions and drawing that you forwarded to metelec when you had your copper strap manufactured.
Kind Regards
Ross
On Monday, October 21, 2019, 4:49 PM, Randall Walker <lladnarowen@...> wrote:
Mike,
That is so funny I have just sent them an email to have one shipped to me hear in Spain. Just seconds ago.
Thanks,
Randall
A-54 #56
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> on behalf of Mike Johnson via Groups.Io <mike.k.johnson@...>
Sent: October 21, 2019 10:37 AM
To: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
Subject: Re: [AmelYachtOwners] Ground strap in bilge
We used
www.metelec.co.uk and sent Bill’s dimensions with a drawing and they produced a perfect replacement delivered promptly.
The key to a successful job was a ‘deep’ socket for the nut at the bottom of the bilge.
Mike & Peta
Solitude
SM2K 461
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
On Behalf Of Randall Walker
Sent: 20 October 2019 21:19
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Ground strap in bilge
I am sitting south of Barcelona. One group member put me onto a German supplier, a former AMEL owner is trying to source it out of Britain and I have been told AMEL does still have them.
Glad I joined this group.
And Bill I agree that the original are way too thin.
This is the one and only time that I will say that the Amel OEM part is not the best part.
Amel uses a thin copper foil for the bonding strap inside the gray water bilge. In terms of electrical conductivity, it is perfect. In terms of durability it is not good enough. The gray PVC float switch tube
sits on top of the copper foil and will wear through the copper foil in a few years. If you buy the Amel OEM copper foil, I suggest you buy 2 because you will likely need to replace it again in a few years.
I will be onto it in the morning.
I think it was around 90 euros — just tell them the bonding strap for the bilge of a SM — they will know what it is.
It was easy to get to the cables but was a problem to loosen the nut on the keelbolt as we needed a special high tool (30 mm) as the boöt was to high for a normal one.
Carré d‘As
Gesendet von Yahoo Mail für iPad
Am Sonntag, Oktober 20, 2019, 19:20 schrieb Randall Walker <lladnarowen@...>:
Did you have an part order # for the strap. I'm in Spain and you would think copper is gold down here. I just cant find a supplier.
I am looking at doing the mast step as well. Eight hours you say, were the wires easy to get at?
I got mine from Amel — you can check on our Blog
Amel 54 # 54in Roda de Bara
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|
|
I had copied from an earlier post from Bills photo album I believe.
Randall
A-54 #56
toggle quoted messageShow quoted text
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> on behalf of Ross Hickey & Donna Hammond via Groups.Io <southernadventurer@...>
Sent: October 21, 2019 3:31 PM
To: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
Subject: Re: [AmelYachtOwners] Ground strap in bilge
Hi Mike,
Thanks for supplying the details of metelec. We are keen to replace our strap. Are you able to supply the dimensions and drawing that you forwarded to metelec when you had your copper strap manufactured.
Kind Regards
Ross
SM2K #386
Sent from Yahoo Mail for iPad
On Monday, October 21, 2019, 4:49 PM, Randall Walker <lladnarowen@...> wrote:
Mike,
That is so funny I have just sent them an email to have one shipped to me hear in Spain. Just seconds ago.
Thanks,
Randall
A-54 #56
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> on behalf of Mike Johnson via Groups.Io <mike.k.johnson@...>
Sent: October 21, 2019 10:37 AM
To: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
Subject: Re: [AmelYachtOwners] Ground strap in bilge
We used
www.metelec.co.uk and sent Bill’s dimensions with a drawing and they produced a perfect replacement delivered promptly.
The key to a successful job was a ‘deep’ socket for the nut at the bottom of the bilge.
Mike & Peta
Solitude
SM2K 461
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
On Behalf Of Randall Walker
Sent: 20 October 2019 21:19
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Ground strap in bilge
I am sitting south of Barcelona. One group member put me onto a German supplier, a former AMEL owner is trying to source it out of Britain and I have been told AMEL does still
have them.
Glad I joined this group.
And Bill I agree that the original are way too thin.
This is the one and only time that I will say that the Amel OEM part is not the best part.
Amel uses a thin copper foil for the bonding strap inside the gray water bilge. In terms of electrical conductivity, it is perfect. In terms of durability it is not good enough. The gray PVC
float switch tube sits on top of the copper foil and will wear through the copper foil in a few years. If you buy the Amel OEM copper foil, I suggest you buy 2 because you will likely need to replace it again in a few years.
I will be onto it in the morning.
I think it was around 90 euros — just tell them the bonding strap for the bilge of a SM — they will know what it is.
It was easy to get to the cables but was a problem to loosen the nut on the keelbolt as we needed a special high tool (30 mm) as the boöt was to high for a normal one.
Carré d‘As
Gesendet von Yahoo Mail für iPad
Am Sonntag, Oktober 20, 2019, 19:20 schrieb Randall Walker <lladnarowen@...>:
Did you have an part order # for the strap. I'm in Spain and you would think copper is gold down here. I just cant find a supplier.
I am looking at doing the mast step as well. Eight hours you say, were the wires easy to get at?
I got mine from Amel — you can check on our Blog
Amel 54 # 54in Roda de Bara
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|
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Olaf Bauer
Hello all, We used the copper ground trap from the company Druseidt in Remscheid, Germany. It costs around EUR 45 and it is protected by a PVC overmoulding and the copper strap ends strengthened with copper shells (see attached pic). My last order is also attached if someone would like to order. Fair winds Olaf S/V Katchopine, SM2K 392 currently in Trinidad
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Randall Walker Sent: Monday, October 21, 2019 3:35 PM To: main@AmelYachtOwners.groups.io Subject: Re: [AmelYachtOwners] Ground strap in bilge I had copied from an earlier post from Bills photo album I believe.
Hi Mike, Thanks for supplying the details of metelec. We are keen to replace our strap. Are you able to supply the dimensions and drawing that you forwarded to metelec when you had your copper strap manufactured. SM2K #386
Sent from Yahoo Mail for iPad On Monday, October 21, 2019, 4:49 PM, Randall Walker <lladnarowen@...> wrote: That is so funny I have just sent them an email to have one shipped to me hear in Spain. Just seconds ago.
We used www.metelec.co.uk and sent Bill’s dimensions with a drawing and they produced a perfect replacement delivered promptly. The key to a successful job was a ‘deep’ socket for the nut at the bottom of the bilge. Mike & Peta Solitude SM2K 461 I am sitting south of Barcelona. One group member put me onto a German supplier, a former AMEL owner is trying to source it out of Britain and I have been told AMEL does still have them. Glad I joined this group. And Bill I agree that the original are way too thin.
This is the one and only time that I will say that the Amel OEM part is not the best part. Amel uses a thin copper foil for the bonding strap inside the gray water bilge. In terms of electrical conductivity, it is perfect. In terms of durability it is not good enough. The gray PVC float switch tube sits on top of the copper foil and will wear through the copper foil in a few years. If you buy the Amel OEM copper foil, I suggest you buy 2 because you will likely need to replace it again in a few years. I will be onto it in the morning.
I think it was around 90 euros — just tell them the bonding strap for the bilge of a SM — they will know what it is. It was easy to get to the cables but was a problem to loosen the nut on the keelbolt as we needed a special high tool (30 mm) as the boöt was to high for a normal one. Carré d‘As
Gesendet von Yahoo Mail für iPad Am Sonntag, Oktober 20, 2019, 19:20 schrieb Randall Walker <lladnarowen@...>: Did you have an part order # for the strap. I'm in Spain and you would think copper is gold down here. I just cant find a supplier. I am looking at doing the mast step as well. Eight hours you say, were the wires easy to get at?
I got mine from Amel — you can check on our Blog Amel 54 # 54in Roda de Bara
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Dear Ross,
I’m in Seychelles at the moment and don’t have the dimensions on my system here.
Bill Rouse uploaded the a file with dimensions and pictures. If you contact him directly he will be able to assist. We found that his solution with the thicker copper bar was robust and worked well. Metelec delivered the bar bent and drilled as specified. We drilled the holes for connection wires once the copper bar was installed.
Regards
Mike & Peta
Solitude SM2K 461
On Mon, Oct 21, 2019 at 11:32 PM +0400, "Ross Hickey & Donna Hammond via Groups.Io" <southernadventurer@...> wrote:
Hi Mike,
Thanks for supplying the details of metelec. We are keen to replace our strap. Are you able to supply the dimensions and drawing that you forwarded to metelec when you had your copper strap manufactured.
Kind Regards
Ross SM2K #386 Sent from Yahoo Mail for iPadOn Monday, October 21, 2019, 4:49 PM, Randall Walker <lladnarowen@...> wrote:
Mike,
That is so funny I have just sent them an email to have one shipped to me hear in Spain. Just seconds ago.
Thanks,
Randall
A-54 #56
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> on behalf of Mike Johnson via Groups.Io <mike.k.johnson@...>
Sent: October 21, 2019 10:37 AM
To: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
Subject: Re: [AmelYachtOwners] Ground strap in bilge
We used
www.metelec.co.uk and sent Bill’s dimensions with a drawing and they produced a perfect replacement delivered promptly.
The key to a successful job was a ‘deep’ socket for the nut at the bottom of the bilge.
Mike & Peta
Solitude
SM2K 461
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
On Behalf Of Randall Walker
Sent: 20 October 2019 21:19
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Ground strap in bilge
I am sitting south of Barcelona. One group member put me onto a German supplier, a former AMEL owner is trying to source it out of Britain and I have been told AMEL does still have them.
Glad I joined this group.
And Bill I agree that the original are way too thin.
This is the one and only time that I will say that the Amel OEM part is not the best part.
Amel uses a thin copper foil for the bonding strap inside the gray water bilge. In terms of electrical conductivity, it is perfect. In terms of durability it is not good enough. The gray PVC float switch tube
sits on top of the copper foil and will wear through the copper foil in a few years. If you buy the Amel OEM copper foil, I suggest you buy 2 because you will likely need to replace it again in a few years.
I will be onto it in the morning.
I think it was around 90 euros — just tell them the bonding strap for the bilge of a SM — they will know what it is.
It was easy to get to the cables but was a problem to loosen the nut on the keelbolt as we needed a special high tool (30 mm) as the boöt was to high for a normal one.
Carré d‘As
Gesendet von Yahoo Mail für iPad
Am Sonntag, Oktober 20, 2019, 19:20 schrieb Randall Walker <lladnarowen@...>:
Did you have an part order # for the strap. I'm in Spain and you would think copper is gold down here. I just cant find a supplier.
I am looking at doing the mast step as well. Eight hours you say, were the wires easy to get at?
I got mine from Amel — you can check on our Blog
Amel 54 # 54in Roda de Bara
|
|
|
Ross Hickey & Donna Hammond
Thanks Mike,
I have sent an email off to Bill.
Have fun in the Seychelles.
Ross and Donna INTREPID KIWI
On Tuesday, October 22, 2019, 9:02 AM, Mike Johnson via Groups.Io <mike.k.johnson@...> wrote: Dear Ross,
I’m in Seychelles at the moment and don’t have the dimensions on my system here.
Bill Rouse uploaded the a file with dimensions and pictures. If you contact him directly he will be able to assist. We found that his solution with the thicker copper bar was robust and worked well. Metelec delivered the bar bent and drilled as specified. We drilled the holes for connection wires once the copper bar was installed.
Regards
Mike & Peta
Solitude SM2K 461
On Mon, Oct 21, 2019 at 11:32 PM +0400, "Ross Hickey & Donna Hammond via Groups.Io" <southernadventurer@...> wrote:
Hi Mike,
Thanks for supplying the details of metelec. We are keen to replace our strap. Are you able to supply the dimensions and drawing that you forwarded to metelec when you had your copper strap manufactured.
Kind Regards
Ross SM2K #386 Sent from Yahoo Mail for iPadOn Monday, October 21, 2019, 4:49 PM, Randall Walker <lladnarowen@...> wrote:
Mike,
That is so funny I have just sent them an email to have one shipped to me hear in Spain. Just seconds ago.
Thanks,
Randall
A-54 #56
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> on behalf of Mike Johnson via Groups.Io <mike.k.johnson@...>
Sent: October 21, 2019 10:37 AM
To: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
Subject: Re: [AmelYachtOwners] Ground strap in bilge
We used
www.metelec.co.uk and sent Bill’s dimensions with a drawing and they produced a perfect replacement delivered promptly.
The key to a successful job was a ‘deep’ socket for the nut at the bottom of the bilge.
Mike & Peta
Solitude
SM2K 461
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
On Behalf Of Randall Walker
Sent: 20 October 2019 21:19
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Ground strap in bilge
I am sitting south of Barcelona. One group member put me onto a German supplier, a former AMEL owner is trying to source it out of Britain and I have been told AMEL does still have them.
Glad I joined this group.
And Bill I agree that the original are way too thin.
This is the one and only time that I will say that the Amel OEM part is not the best part.
Amel uses a thin copper foil for the bonding strap inside the gray water bilge. In terms of electrical conductivity, it is perfect. In terms of durability it is not good enough. The gray PVC float switch tube
sits on top of the copper foil and will wear through the copper foil in a few years. If you buy the Amel OEM copper foil, I suggest you buy 2 because you will likely need to replace it again in a few years.
I will be onto it in the morning.
I think it was around 90 euros — just tell them the bonding strap for the bilge of a SM — they will know what it is.
It was easy to get to the cables but was a problem to loosen the nut on the keelbolt as we needed a special high tool (30 mm) as the boöt was to high for a normal one.
Carré d‘As
Gesendet von Yahoo Mail für iPad
Am Sonntag, Oktober 20, 2019, 19:20 schrieb Randall Walker <lladnarowen@...>:
Did you have an part order # for the strap. I'm in Spain and you would think copper is gold down here. I just cant find a supplier.
I am looking at doing the mast step as well. Eight hours you say, were the wires easy to get at?
I got mine from Amel — you can check on our Blog
Amel 54 # 54in Roda de Bara
|
|
|
Someone on a previous discussion on this topic suggested copper water pipe hammered flat
Seemed sensible cheap option to me and might give it a go
All the best
Miles
Maramu 162
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I thought the same but was advised that this is dispersing micro volts. I'm not nerdy enough to argue. They talk so high over my head I can barely hear them. lol
So I will go with the Copper I have been turned onto, from just north of London.
Randall
A-54 #56
toggle quoted messageShow quoted text
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> on behalf of Miles <milesbernie@...>
Sent: October 23, 2019 2:14 PM
To: main@amelyachtowners.groups.io <main@amelyachtowners.groups.io>
Subject: Re: [AmelYachtOwners] Ground strap in bilge
Someone on a previous discussion on this topic suggested copper water pipe hammered flat
Seemed sensible cheap option to me and might give it a go
All the best
Miles
Maramu 162
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