[Public-List] Zincs for Lakes
John Birch via Public-List
public-list at lists.alberg30.org
Mon May 22 08:06:41 PDT 2017
Actually there is sufficient salinity on the Great Lakes to conduct
current and zink anodes are always advisable and effective assuming you
have a good connection to the shaft nut and it hasn't oxidized where it
connects. Interestingly, Hamilton Harbour has double the salinity of
Lake Ontario.
I am pretty sure Huron near Goderidge has elevated salinity as well.
If you dock at marinas you should have anodes due to unpredictable
stray currents. Never swim in marinas as most of you already know due
to the stray current issue.
Cheers
John
Sent from my BlackBerry® PlayBookâ¢
www.blackberry.com
__________________________________________________________________
From: "Mike Lehman via Public-List" <public-list at lists.alberg30.org>
To: "A30 Public-List" <public-list at lists.alberg30.org>, "Gordon Laco"
<mainstay at csolve.net>
Sent: 22 May, 2017 10:20 AM
Subject: Re: [Public-List] Zincs for Lakes
I think you need salinity for conductivity.
On May 22, 2017 10:08 AM, "Gordon Laco via Public-List" <
public-list at lists.alberg30.org> wrote:
> Hello Bill,
>
> Weâve never had a sacrificial zinc installed⦠40 years with two boats on
> the Great Lakes. I donât reckon weâve needed the protection.
>
> Gord #426 Surprise
>
> On 2017-05-22, 9:01 AM, "Public-List on behalf of Bill McCoy via
> Public-List" public-list at lists.alberg30.org> wrote:
>
> So, along these lines, do I really need a zinc on my prop shaft for
> fresh water?? I have a magnesium on my rudder but nothing on my new shaft.
>
>
> Skeep
>
>
> ________________________________
> From: Public-List on behalf
> of via Public-List
> Sent: Tuesday, May 16, 2017 3:05 PM
> To: public-list at lists.alberg30.org
> Subject: Public-List Digest, Vol 3469, Issue 2
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> Today's Topics:
>
> 1. Re: shaft zinc (via Public-List)
> 2. Re: shaft zinc (George Dinwiddie via Public-List)
> 3. shaft zinc (Stephen gwyn via Public-List)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 16 May 2017 14:11:46 +0000
> From: via Public-List
> To: ,
> Subject: Re: [Public-List] shaft zinc
> Message-ID:
> wfb.bank.corp>
>
> Content-Type: text/plain; charset="utf-8"
>
> I also learned a lesson many years ago after occasionally finding
> relatively new zincs gone including the screw and lock washer only a few
> months after installation. Once when the yard manager sold me a new zinc
> he advised me "seat" it with a light hammer hit before attaching the screw
> and lock washer. As he pointed out most of these zincs have little casting
> imperfections (flashing?) on the inside where they seat with the bronze
> male nut. As these thin ridges of zinc quickly wear away the zinc becomes
> loose on the prop nut and the lock washer becomes useless.
>
> I have not lost one since following his advice.
>
> Richard Hazlegrove
> Quest 433
> Mobjack Bay, VA.
>
> -----Original Message-----
> From: J. Kingsland via Public-List [mailto:public-list at lists.
> alberg30.org]
> Sent: Tuesday, May 16, 2017 9:15 AM
> To: Jay Davenport
> Cc: Alberg 30 Public List -- open to all
> Subject: Re: [Public-List] shaft zinc
>
> Thanks!? Mike Lehman mentioned the end of shaft? solution to me after
> he saw that my zinc had disappeared yet again when I had my boat hauled to
> work on the mast wiring a few weeks ago.? I've never heard of it, and then
> saw this thread.? I may have to give it a go!
>
> Gigi
>
>
> On May 16, 2017, 9:08 AM, at 9:08 AM, Jay Davenport
> wrote:
> >I have used the Canadian Metals end-of-shaft acorn zinc for decades.
> It
> >works very well. To avoid losing it, it is important to use the lock
> >washer which is packaged with each new zinc (model B). I only replace
> >the zinc after two years, when I am hauling the boat for bottom paint.
> >In addition to the lock washer, I put Locktite Blue on the screw
> ("belt
> >and suspenders").
> >Jay DavenportRevolution, A30 #526
> >
> > From: J. Kingsland via Public-List org>
> >To: Mike Meinhold ; Mike Meinhold via
> >Public-List
> > Sent: Tuesday, May 16, 2017 8:25 AM
> > Subject: Re: [Public-List] shaft zinc
> >
> >I was thinking about trying the Zinc setup at the end of the shaft on
> >my boat as well. The area where I usually put the zinc, forward of the
> >prop, is too narrow and the custom trimmed pieces of zinc I've
> attached
> >in the past won't stay on.
> >
> >Other than apparently it is not working for you Gordon, has anyone
> else
> >had success with it?
> >
> >
> >Gigi Kingsland
> >PERFECT intentions #146
> >
> >
> >On May 16, 2017, 5:58 AM, at 5:58 AM, Mike Meinhold via Public-List
> > wrote:
> >>I would think replacing the shaft nut is your only solution.? Yes,
> >>connecting a ground wire to a zinc would help temporarily.? Drilling
> >>and tapping underwater sounds tough- not that replacing the shaft nut
> >>is easy!
> >>
> >>Mike
> >>
> >>Michael J. Meinhold
> >>meinhold272 at gmail.com / 301 852 0619
> >>
> >>> On May 15, 2017, at 10:19 PM, George Dinwiddie via Public-List
> >> wrote:
> >>>
> >>> Gordon,
> >>>
> >>> From your description, I'm guessing you have an ElectroGuard or
> >>Canada Metal zinc
> >>(http://alberg30.org/maintenance/MechanicalPropulsion/Zincs/)?
> >Wouldn't
> >>it be possible to replace the zinc-nut (which the screw threads into)
> >>while in the water?
> >>>
> >>> - George
> >>>
> >>>> On 5/15/17 9:37 PM, gordon white via Public-List wrote:
> >>>>? Went to replace the zinc on the end of the shaft today and lo and
> >>>>behold the old zinc and the socket head screw supposed to hold it
> >>were
> >>>> gone. It's been difficult to attach the thing, especially under
> >>water,
> >>>> for several years. Now it appears the threads (1/4 - 20?) are
> >>completely
> >>>> stripped. I know of no way to fix that without hauling out, which
> >is
> >>not
> >>>> on the schedule until fall.
> >>>>
> >>>>
> >>>>? ? There was no apparent corrosion on the prop
> >>>>
> >>>>
> >>>>? ? My current solution is to drop a zinc on a piece of wire
> >>overboard
> >>>> and attach the other end to the engine somewhere. Probably will
> use
> >>this
> >>>> system only at my dock, as it probably would be a nuisance under
> >>way. I
> >>>> know of nowhere to attach it more permanently.
> >>>>
> >>>>
> >>>>? ? My first idea would be to drill out the hole and tap it to a
> >>larger
> >>>> thread, but do not want to go to 5/16 if I can help it. Next idea
> >is
> >>to
> >>>> hammer in a piece of brass rod (bronze??) or a bronze bolt and
> >drill
> >>and
> >>>> tap that back to 1/4 - 20.
> >>>>
> >>>>
> >>>>? ? Anyone had this problem & how did you solve it?
> >>>>
> >>>>
> >>>> - Gordon White
> >>>>
> >>>> Brigadoon II # 275
> >>>>
> >>>
> >>> --
> >>>
> >>----------------------------------------------------------
> ------------
> >>>? When I remember bygone days? ? ? ? ? ? ? ? ? ? ? ? George
> Dinwiddie
> >>>? I think how evening follows morn;
> >gdinwiddie at alberg30.org
> >>>? So many I loved were not yet dead,? ? ? ? ?
> http://www.Alberg30.org
> >>>? So many I love were not yet born.? ? ? ? ? ? ? ? ? ? ? ? ? also
> >see:
> >>>? ? ? ? ? ? ? 'The Middle' by Ogden Nash? ?
> http://idiacomputing.com
> >>>
> >>----------------------------------------------------------
> ------------
> >>>
> >>>
> >>>
> >>> _______________________________________________
> >>> These businesses support your Association:
> >>> http://www.alberg30.org/store/A30supporters.html
> >>> Please support them.
> >>> _______________________________________________
> >>> Public-List mailing list
> >>> Public-List at lists.alberg30.org
> >>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >>_______________________________________________
> >>These businesses support your Association:
> >>http://www.alberg30.org/store/A30supporters.html
> >>Please support them.
> >>_______________________________________________
> >>Public-List mailing list
> >>Public-List at lists.alberg30.org
> >>http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >_______________________________________________
> >These businesses support your Association:
> >http://www.alberg30.org/store/A30supporters.html
> >Please support them.
> >_______________________________________________
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> >http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >
> >
> >
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 16 May 2017 10:49:24 -0400
> From: George Dinwiddie via Public-List
>
> To: public-list at lists.alberg30.org
> Subject: Re: [Public-List] shaft zinc
> Message-ID:
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Excellent advice, Richard. May I quote your email on the website zincs
> page?
>
> - George
>
> On 5/16/17 10:11 AM, via Public-List wrote:
> > I also learned a lesson many years ago after occasionally finding
> relatively new zincs gone including the screw and lock washer only a few
> months after installation. Once when the yard manager sold me a new zinc
> he advised me "seat" it with a light hammer hit before attaching the screw
> and lock washer. As he pointed out most of these zincs have little casting
> imperfections (flashing?) on the inside where they seat with the bronze
> male nut. As these thin ridges of zinc quickly wear away the zinc becomes
> loose on the prop nut and the lock washer becomes useless.
> >
> > I have not lost one since following his advice.
> >
> > Richard Hazlegrove
> > Quest 433
> > Mobjack Bay, VA.
> >
> > -----Original Message-----
> > From: J. Kingsland via Public-List [mailto:public-list at lists.
> alberg30.org]
> > Sent: Tuesday, May 16, 2017 9:15 AM
> > To: Jay Davenport
> > Cc: Alberg 30 Public List -- open to all
> > Subject: Re: [Public-List] shaft zinc
> >
> > Thanks! Mike Lehman mentioned the end of shaft solution to me
> after he saw that my zinc had disappeared yet again when I had my boat
> hauled to work on the mast wiring a few weeks ago. I've never heard of it,
> and then saw this thread. I may have to give it a go!
> >
> > Gigi
> >
> >
> > On May 16, 2017, 9:08 AM, at 9:08 AM, Jay Davenport <
> jaysail at yahoo.com> wrote:
> >> I have used the Canadian Metals end-of-shaft acorn zinc for
> decades. It
> >> works very well. To avoid losing it, it is important to use the lock
> >> washer which is packaged with each new zinc (model B). I only
> replace
> >> the zinc after two years, when I am hauling the boat for bottom
> paint.
> >> In addition to the lock washer, I put Locktite Blue on the screw
> ("belt
> >> and suspenders").
> >> Jay DavenportRevolution, A30 #526
> >>
> >> From: J. Kingsland via Public-List org>
> >> To: Mike Meinhold ; Mike Meinhold via
> >> Public-List
> >> Sent: Tuesday, May 16, 2017 8:25 AM
> >> Subject: Re: [Public-List] shaft zinc
> >>
> >> I was thinking about trying the Zinc setup at the end of the shaft
> on
> >> my boat as well. The area where I usually put the zinc, forward of
> the
> >> prop, is too narrow and the custom trimmed pieces of zinc I've
> attached
> >> in the past won't stay on.
> >>
> >> Other than apparently it is not working for you Gordon, has anyone
> else
> >> had success with it?
> >>
> >>
> >> Gigi Kingsland
> >> PERFECT intentions #146
> >>
> >>
> >> On May 16, 2017, 5:58 AM, at 5:58 AM, Mike Meinhold via Public-List
> >> wrote:
> >>> I would think replacing the shaft nut is your only solution. Yes,
> >>> connecting a ground wire to a zinc would help temporarily.
> Drilling
> >>> and tapping underwater sounds tough- not that replacing the shaft
> nut
> >>> is easy!
> >>>
> >>> Mike
> >>>
> >>> Michael J. Meinhold
> >>> meinhold272 at gmail.com / 301 852 0619
> >>>
> >>>> On May 15, 2017, at 10:19 PM, George Dinwiddie via Public-List
> >>> wrote:
> >>>>
> >>>> Gordon,
> >>>>
> >>>> From your description, I'm guessing you have an ElectroGuard or
> >>> Canada Metal zinc
> >>> (http://alberg30.org/maintenance/MechanicalPropulsion/Zincs/)?
> >> Wouldn't
> >>> it be possible to replace the zinc-nut (which the screw threads
> into)
> >>> while in the water?
> >>>>
> >>>> - George
> >>>>
> >>>>> On 5/15/17 9:37 PM, gordon white via Public-List wrote:
> >>>>> Went to replace the zinc on the end of the shaft today and lo
> and
> >>>>> behold the old zinc and the socket head screw supposed to hold it
> >>> were
> >>>>> gone. It's been difficult to attach the thing, especially under
> >>> water,
> >>>>> for several years. Now it appears the threads (1/4 - 20?) are
> >>> completely
> >>>>> stripped. I know of no way to fix that without hauling out, which
> >> is
> >>> not
> >>>>> on the schedule until fall.
> >>>>>
> >>>>>
> >>>>> There was no apparent corrosion on the prop
> >>>>>
> >>>>>
> >>>>> My current solution is to drop a zinc on a piece of wire
> >>> overboard
> >>>>> and attach the other end to the engine somewhere. Probably will
> use
> >>> this
> >>>>> system only at my dock, as it probably would be a nuisance under
> >>> way. I
> >>>>> know of nowhere to attach it more permanently.
> >>>>>
> >>>>>
> >>>>> My first idea would be to drill out the hole and tap it to a
> >>> larger
> >>>>> thread, but do not want to go to 5/16 if I can help it. Next idea
> >> is
> >>> to
> >>>>> hammer in a piece of brass rod (bronze??) or a bronze bolt and
> >> drill
> >>> and
> >>>>> tap that back to 1/4 - 20.
> >>>>>
> >>>>>
> >>>>> Anyone had this problem & how did you solve it?
> >>>>>
> >>>>>
> >>>>> - Gordon White
> >>>>>
> >>>>> Brigadoon II # 275
> >>>>>
> >>>>
> >>>> --
> >>>>
> >>> ------------------------------------------------------------
> ----------
> >>>> When I remember bygone days George
> Dinwiddie
> >>>> I think how evening follows morn;
> >> gdinwiddie at alberg30.org
> >>>> So many I loved were not yet dead,
> http://www.Alberg30.org
> >>>> So many I love were not yet born. also
> >> see:
> >>>> 'The Middle' by Ogden Nash
> http://idiacomputing.com
> >>>>
> >>> ------------------------------------------------------------
> ----------
> >>>>
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> These businesses support your Association:
> >>>> http://www.alberg30.org/store/A30supporters.html
> >>>> Please support them.
> >>>> _______________________________________________
> >>>> Public-List mailing list
> >>>> Public-List at lists.alberg30.org
> >>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >>> _______________________________________________
> >>> These businesses support your Association:
> >>> http://www.alberg30.org/store/A30supporters.html
> >>> Please support them.
> >>> _______________________________________________
> >>> Public-List mailing list
> >>> Public-List at lists.alberg30.org
> >>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >> _______________________________________________
> >> These businesses support your Association:
> >> http://www.alberg30.org/store/A30supporters.html
> >> Please support them.
> >> _______________________________________________
> >> Public-List mailing list
> >> Public-List at lists.alberg30.org
> >> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >>
> >>
> >>
> >
> > _______________________________________________
> > These businesses support your Association:
> > http://www.alberg30.org/store/A30supporters.html
> > Please support them.
> > _______________________________________________
> > Public-List mailing list
> > Public-List at lists.alberg30.org
> > http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >
>
> --
> ------------------------------------------------------------
> ----------
> When I remember bygone days George Dinwiddie
> I think how evening follows morn;
> gdinwiddie at alberg30.org
> So many I loved were not yet dead,
> http://www.Alberg30.org
> So many I love were not yet born. also see:
> 'The Middle' by Ogden Nash
> http://idiacomputing.com
> ------------------------------------------------------------
> ----------
>
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 16 May 2017 10:01:01 -0700
> From: Stephen gwyn via Public-List
> To: public-list at lists.alberg30.org
> Subject: [Public-List] shaft zinc
> Message-ID: <591B304D.3080004 at nrc-cnrc.gc.ca>
> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed
>
>
> I had this problem last haulout. The threads on the bronze prop
> zinc holder of the CMPN-B prop zinc had worn out after only 15
> years. Replacing it turned out to be fairly easy with the right
> tools: a length of 2x4 to wedged between the prop and the hull to
> keep the prop from turning and a BIG wrench to turn the prop nut
> holder. Luckily, I'm on good terms with the people in the yard
> and they volunteered to lend me the 30-inch wrench. Out of the
> water with someone else holding the 2x4, it took all of 5
> minutes. In the water would be trickier.
>
> I use locktite blue to keep the screw in.
>
> SG
>
>
>
> --
> ------------------------------------------------------------
> -------------
> Stephen Gwyn | Tel: 1-250-363-3136
> Canadian Astronomy Data Centre | Fax: 1-250-363-0045
> Herzberg Astronomy and Astrophysics | Cell: 1-250-885-6969
> 5071 West Saanich Road | E-mail:
> Stephen.Gwyn at nrc-cnrc.gc.ca
> Victoria, BC, V9E 2E7, Canada | http://astrowww.phys.uvic.ca/~
> gwyn/
> ------------------------------------------------------------
> -------------
>
>
> ------------------------------
>
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