Re: [Amel Yacht Owners] Rudder , zincs, bonding, and cleaning inside


Bill Kinney <greatketch@...>
 

I posted images of the drawing I have in a new folder “Amel Drawings”

This drawing is dated 1988, so it is from the very earliest production of the Super Maramu.  I do not know idea if there were subsequent changes.  This drawing was included in Amel’s delivery information package for my boat, #160 in 1996, so I think it is safe to assume that it was current at least that long.

Bill Kinney
SM #160, Harmonie
Narragansett Bay, RI, USA
“Ships and men rot in port."





On Sep 4, 2016, at 13:27, Alexandre Uster von Baar uster@... [amelyachtowners] <amelyachtowners@...> wrote:

Yes please!

Sincerely, Alexandre

--------------------------------------------
On Sun, 9/4/16, Bill Kinney greatketch@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: Re: [Amel Yacht Owners] Rudder , zincs, bonding, and cleaning inside
To: amelyachtowners@...
Date: Sunday, September 4, 2016, 12:14 PM


 









I have a copy of Amel’s drawing of the rudder and
steering system.  If somebody is interested, I can post
it.


Bill KinneySM #160, HarmonieNarragansett Bay, RI,
USA“Ships and men
rot in port."http://fetchinketch.net






On Sep 4, 2016, at 13:05, Patrick
Mcaneny sailw32@...
[amelyachtowners] <amelyachtowners@...>
wrote:

Richard, Do you know the
width/thickness  of the strap ? That's not a bad idea
to tap it a bit larger or at the least run a tap through it
to clean the threads up.Thanks,Pat


-----Original Message-----
From:
Richard03801 richard03801@... [amelyachtowners]
<amelyachtowners@...>
To: amelyachtowners
<amelyachtowners@...>
Sent: Sun, Sep 4,
2016 11:58 am
Subject: Re: [Amel Yacht Owners]
Rudder , zincs, bonding, and cleaning inside

 Hi Pat you can also tap the bolt
threads one size larger to increase the surface area and
provide a fresh surface. And yes as a result you'll have
drill the hole in the zinc larger. 
Fair Winds Smooth Sailing 
Capt Richard
PillerNewport RI Cell 603 767
5330
On Sep 4, 2016, at 09:37, Patrick
Mcaneny sailw32@... [amelyachtowners]
<amelyachtowners@...>
wrote:

 Eric, One of my zincs also dissolves
faster than the other . My electrician found that I only had
560 at the strap. He is trying to determine if I have a leak
, but we also surmised that I may have degraded continuity .
I assume that there is two stainless straps welded to the
rudder post that are tapped for the bolts that hold the
zincs. I wonder what the thickness of the plates are , as
the only contact is , the threaded area. If mud or debris
found its way between the threads I assume that could lower
continuity. If we cannot find any leak or other cause for
the low number my electrician suggested that we add a larger
zinc with two bronze studs ( better conductor than
stainless) through the hull and connect to the strap or
quadrant. I cannot see how you could do any harm by putting
a rod up through the hole, its just an empty void , but
I don't think its going to help much to clean out the i
nside . I also cannot see any harm in enlarging the hole .
Rinsing the inside with a hose probably would help to get
some old muck out .I would be interested to know if
you get the number up.
Pat SM123


-----Original Message-----
From: kimberlite@... [amelyachtowners]
<amelyachtowners@...>
To: amelyachtowners
<amelyachtowners@...>
Sent: Sun, Sep 4,
2016 5:41 am
Subject: [Amel Yacht Owners]
Rudder , zincs, bonding, and cleaning inside

 I have recently noticed that one
zinc on the rudder is active and the other is not. I believe there are S/S fingers
inside the rudder which are attached to the rudder post.
which in turn is attached to the bonding. Anyone have an
idea as to why I might be having dissimilar erosion of
the zincs.I also have put a piece of
threaded rod into the hole in the bottom of the rudder and a
lot of black silt and parts of shells come out of the
rudder. Does anyone think I am doing harm to the rudder with
this 2 foot long piece of rod?I was thinking of making the hole
in the rudder slightly larger. I would then insert a piece
of soft copper tubing and attach it to a garden hose and
basically power wash the inside, . Any comments?There would
be enough space between the tubing and the tubing to allow
outflow of silt and shell pieces.Today I finished cleaning the wet
bilge to inspect the bonding strap, everything was good.
However when I measured the voltage at the strap with the
silver chloride electrode in the water I only got -675 mv I
dropped my zinc guppy in the water and it wend down to
-725.I also checked it at the engine bonding and it was the
same. I forgot to check it at the rudder.I will do that
today. I assume it is caused by the inactive zinc. Again,
any ideas?Fair winds,Eric
SM 376 Kimberlite in
Lon Island, NY.Any ideas why? I assume it is the
inactive zinc on the rudder











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