Hey Dennis, Godfrey Zincs look interesting. Good idea and nice quality product, though the price is scary. A zinc for my 1 1/8" shaft costs $43 before shipping. http://store-bbba2.mybigcommerce.com/godfrey-premium-streamlined-zincs/
I'll stick w my $7 zincs from below, and try the TefGel trick: http://www.boatzincs.com/shaft1-sizes.html Chuck Resolute 1990 C&C 34R Atlantic City, NJ ----- Original Message ----- From: "Dennis C." <capt...@yahoo.com> To: cnc-list@cnc-list.com Sent: Monday, December 2, 2013 8:08:07 PM Subject: Re: Stus-List installing shaft zincs 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: <blockquote> 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 </blockquote> _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
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