Re: Copper earthing/bonding strap broken in bilge on Amel 54

Rainer Huthmacher

Does anyone know about a keel bonding strap on a Sharki? I assume it should be the same as on a Maramu or Mango...
Fair winds

On 3 Apr 2019, at 03:05, eric freedman <kimberlite@...> wrote:

I also used this method however I used a thicker and wider strap.

I also used a torch with solder  and bolts to fasten the top of the old bonding strap to my new one.

Having some ratchet wrench extensions is a good thing to have on board without having to fabricate a T handle. Be sure to tape the extensions together just in case.

If you happen to be in the USA you can but almost any flat copper strap or plate from McMaster Carr. This is an incredible website they have everything mechanical you need. Their paper catalog is over 3000 pages.

Check it out.

Fair Winds


Kimberlite Amel Super Maramu #376



From: [] On Behalf Of CW Bill Rouse
Sent: Tuesday, April 02, 2019 3:59 PM
Subject: Re: [AmelYachtOwners] Copper earthing/bonding strap broken in bilge on Amel 54


What he does in the video works, but there is too much to say about what is wrong with this video.


I have 3 pages in my Amel book devoted to this job, but if you follow these steps you will do a good job.


1. Fabricate the replacement Bonding Strap with about 1/8" thick copper stock about 2" wide.

2. Empty as much water as possible using the manual bilge pump until it sucks air.

3. Place a towel over the C-Drive and engine angle iron frame to protect it from water.

4. Remove the two wires to the Gray Water Float Switch Assembly.

5. Pull the gray colored Float Switch Assembly toward aft out of its clamps and up placing the wet end in a

bucket and handing it to crew on deck. Have crew clean it & continue next step.

6. Pull each of the pump hoses up one at a time while using degreaser/cleaner to clean each as you pull it

out. Then place the end of the hose pointed up and the hose to the side.

7. Using a wet/vacuum, suck the remaining water & sludge from the bottom, until totally dry

8. Remove the 30mm stainless steel nut on the stainless steel keel stud with a 30mm socket connected to

extensions totaling 3 feet or 1 meter. You will need a Flexible Grabber Pickup Tool (pictured) to pick up

the nut and pieces of Bonding Strap.


9. Remove the pieces of old Bonding Strap, There is also a small "flat head" machine screw holding the

Bonding Strap against the forward port side of the bilge sump (I did not replace it). At the top of the old

Bonding Strap, cut the loose strap end, leaving only the bundle of soldered wires, wrapped with copper.

10. Install the new Bonding Strap. PEARL: Use masking tape around the nut to hold it in the socket.

11. Locate the soldered bundle of about 12 wires and drill a 9mm hole through the bundle and bolt it to the

top of the new Bonding Strap, using an 8mm brass or bronze bolt/nut to secure it in place.






Bill Rouse

720 Winnie St.

Galveston, Texas 77550




On Tue, Apr 2, 2019 at 10:46 AM Denise McGovern <Mcgovern.denise@...> wrote:

Luckily there is a YouTube video from Mother Ship Adrift on exactly this: 



s/v CARA

Chesapeake Bay

Join to automatically receive all group messages.