[Public-List] Zincs for Lakes
Mike Lehman via Public-List
public-list at lists.alberg30.org
Mon May 22 07:20:06 PDT 2017
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,
>
> We’ve never had a sacrificial zinc installed… 40 years with two boats on
> the Great Lakes. I don’t reckon we’ve 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-bounces at lists.alberg30.org on behalf of
> 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 <public-list-bounces at lists.alberg30.org> on behalf
> of via Public-List <public-list at lists.alberg30.org>
> 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 <public-list at lists.alberg30.org>
> To: <jkingsland209 at comcast.net>, <public-list at lists.alberg30.org>
> Subject: Re: [Public-List] shaft zinc
> Message-ID:
> <D53C92A57024A44BB953C533987750282B071CC5 at MSGEXSIL1137.ent.
> 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 <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 <public-list at lists.alberg30.
> org>
> >To: Mike Meinhold <meinhold272 at gmail.com>; Mike Meinhold via
> >Public-List <public-list at lists.alberg30.org>
> > 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
> ><public-list at lists.alberg30.org> 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
> >><public-list at lists.alberg30.org> 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
> <public-list at lists.alberg30.org>
> To: public-list at lists.alberg30.org
> Subject: Re: [Public-List] shaft zinc
> Message-ID: <e9cda1dc-551a-65c7-3d0d-13012fa06897 at alberg30.org>
> 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 <public-list at lists.alberg30.
> org>
> >> To: Mike Meinhold <meinhold272 at gmail.com>; Mike Meinhold via
> >> Public-List <public-list at lists.alberg30.org>
> >> 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
> >> <public-list at lists.alberg30.org> 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
> >>> <public-list at lists.alberg30.org> 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 <public-list at lists.alberg30.org>
> 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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