Once you sand the shaft bright and apply the zinc, TefGel will protect the
contact area from corrosion thus maintaining conductance between the shaft and
zinc contact. If you don't have good conductance between the zinc and shaft at
the onset, TefGel won't help. As in most boat work, preparation is 80% of the
success of a job.
The source/location of the current may cause one zinc to erode quicker than
another but I can't convince myself it would be substantially different.
BTW, for those with 1 inch and larger propeller shafts, you might consider
Godfrey zincs. I like the design. They have a copper collar that stays on
after the sacrificial zinc portion is gone.
Unfortunately, Touche' has a 7/8 inch shaft and Godfrey doesn't make zincs that
small.
Dennis C.
Touche' 35-1 #83
Mandeville, LA
>________________________________
> From: Chuck S <cscheaf...@comcast.net>
>To: cnc-list@cnc-list.com
>Sent: Monday, December 2, 2013 6:48 PM
>Subject: Re: Stus-List installing shaft zincs
>
>
>
>Hi David,
>Someone suggested using TefGel to ensure a better electrical bond between the
>zinc and the prop shaft. If it is bonded well, the zincs might all wear
>evenly? Never tried that.
>
>
>Chuck
>Resolute
>1990 C&C 34R
>Atlantic City, NJ
>
>________________________________
>From: "David Knecht" <davidakne...@gmail.com>
>To: "CnC CnC discussion list" <cnc-list@cnc-list.com>
>Sent: Monday, December 2, 2013 9:49:04 AM
>Subject: Re: Stus-List installing shaft zincs
>
>Hi Chuck- I had exactly the same experience after a May launch. The shaft
>zincs looked fine at that time, so I left them and put a new bullet on the
>prop. They still look pretty good and the bullet was nearly gone when I
>hauled. It seems like we are getting differential erosion. What are you
>thinking the Tefgel would do? Dave
>
>
>On Dec 1, 2013, at 9:50 PM, Chuck S <cscheaf...@comcast.net> wrote:
>
>Wow.
>>Installed the bullet shaped zinc last Spring but launched late, early July.
>>Haulout in mid November revealed it was fully intact while the MaxProp cone
>>was half gone. I intend to try the Tefgel next season.
>>
>>
>>Chuck
>>Resolute
>>1990 C&C 34R
>>Atlantic City, NJ
>>
>>________________________________
>>From: "TOM VINCENT" <tvince...@msn.com>
>>To: "C&C Forum" <cnc-list@cnc-list.com>
>>Sent: Thursday, November 28, 2013 10:09:45 AM
>>Subject: Stus-List installing shaft zincs
>>
>>
>>I have a martec folding prop and install their bullet shaped zinc each
>>spring, they recommend the zinc be installed next to the strut within 1/4" to
>>3/8".
>>The zinc lasts me the entire year, I sail on the Upper Chesapeake Bay which
>>is fresh water.
>>
>>Tom
>>Frolic II 36' cb
>>Chesapeake City, MD
>>
>>_______________________________________________
>>This List is provided by the C&C Photo Album
>>http://www.cncphotoalbum.com
>>CnC-List@cnc-list.com
>>_______________________________________________
>>This List is provided by the C&C Photo Album
>>http://www.cncphotoalbum.com
>>CnC-List@cnc-list.com
>>
>
>David Knecht, Ph.D. Professor and Head of Microscopy Facility
>Department of Molecular and Cell Biology
>U-3125
>91 N. Eagleville Rd.
>University of Connecticut
>Storrs, CT 06269
>860-486-2200
>860-486-4331 (fax)
>
>
>
>
>_______________________________________________
>This List is provided by the C&C Photo Album
>http://www.cncphotoalbum.com
>CnC-List@cnc-list.com
>
>_______________________________________________
>This List is provided by the C&C Photo Album
>http://www.cncphotoalbum.com
>CnC-List@cnc-list.com
>
>
>
_______________________________________________
This List is provided by the C&C Photo Album
http://www.cncphotoalbum.com
CnC-List@cnc-list.com
