On Fri, 9/23/16, Bill Kinney greatketch@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: Re: [Amel Yacht Owners] SM Jib Furler Failure.
To: "James Wendell ms42phantom54@..." <amelyachtowners@...>
Date: Friday, September 23, 2016, 9:10 AM


 









There are many things connected to the bonding
system that aren’t themselves being protected from
corrosion by such a connection.  The bonding connections
are not ONLY about corrosion protection by connection to the
rudder zinc.
In a boat where the DC neutral
and the bonding system are deliberately connected, it could
serve as a return path to the battery in case of a leak from
the positive side of the DC system to the case of the motor.
 I confess to not really having a good understanding of the
logic in connecting things like the bilge pump or the
freshwater pump to the bonding circuit in an Amel.  It
certainly is not to protect them from corrosion by
connecting them to the rudder zinc.
By the way, does anybody know
offhand the size of the rivets in the furler?

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






On Sep 22, 2016, at 22:20, Kent
Robertson karkauai@...
[amelyachtowners] <amelyachtowners@...>
wrote:

That makes sense, Bill.  Guess I
was thinking of sea water on furler, deck, hull all
interconnecting as if submerged.
So the furling motor is not
bonded to the zincs?  What about the bow thruster?  If
have sworn they were both connected via the yellow/green
wires.
I'll be back aboard next week
and look again.
KentSM 243Kristy
On Sep 22, 2016, at 7:56 PM, Bill
Kinney greatketch@... [amelyachtowners]
<amelyachtowners@...>
wrote:

 
Kent,
Bonding would have no effect on
corrosion here. The zinc that is attached to the bonding
system has to be in the same “body of water” as the
metals it is protecting.  In this case the “body of
water” is the tiny little puddle between the stainless
steel screws and the aluminum plate. It is its own little
battery, and connections to the rest of the boat are
immaterial. These stainless screws seem to have been the
focal point for the corrosion on my piece.  
Other than disassembling the
furler unit, this is an easy fix.  The plate is just a
round piece of 1/4 inch aluminum with four holes in it.  If
I was in a remote place, I could make it on the boat with
hand tools.
While I have things apart, I am
taking Kent's suggestion and finding a local powder coat
shop to have everything made pretty… hopefully for much
longer than paint.
Bill KinneySM #160, HarmonieReedvile, VA, Chesapeake Bay,
USA“Ships and men
rot in port."http://fetchinketch.net




On Sep 22, 2016,
at 17:37, Kent Robertson karkauai@... [amelyachtowners]
<amelyachtowners@...>
wrote:
 
I don't know if the furler on
Kristy is connected.  Sure seems like it should
be...exposed to sea water, dissimilar metals.  Wonder why
it wouldn't be?  Anybody else know if their furler is
connected?
Kent

Kent Robertsonkarkauai@...
voice/text
On Sep 22, 2016, at
5:02 PM, divanz620@... [amelyachtowners]
<amelyachtowners@...>
wrote:

 Hello Kent,
None of the rigging on my SM is
attached to the bonding system.....
CheersAlanElyse SM437















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