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  #1   IP: 73.192.77.162
Old 12-26-2020, 02:20 PM
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Elizabeth_B29 Elizabeth_B29 is offline
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7/8” Zinc not seating on Shaft Properly

Hello Afourians,

A shaft zinc story...

I’m “recommissioning” to get back in the water again after about three years on the hard.

I ordered a 7/8 limited clearance style zinc from Amazon. It was a martyr brand with the copper contact on the interior. A routine thing I do after a bottom job.

This is the first time it’s ever happened but, even tapping with a hammer I could not get the zinc to close properly on the shift.
I tried it on different 7/8” shafts in the boat yard and determined that The zinc was indeed an issue and that the copper contact was likely standing too proud to allow The zinc to close properly on the shaft. Was I gong coo coo and forgot my shaft size??? Nope, I mic’ed just to be sure.

I called West Coast zinks and they confirmed that they had heard about this happening before. by the way they’re a great company located in San Diego, talk with Michael if you have any issues. Great customer service.

The new seven eights inch martyr zincs no longer are manufactured with the copper contact. ( prob. Due to the cost of copper or supply chain issues I figure)
Of course I was a little concerned about this because I’ve always used the one with the cover contact and like the way the copper ball snugs up on the shaft. I was assured that this is OK and that my concerns about it slipping on the shaft were unfounded. So that’s what is being shipped out to me.

I ordered directly through west coast Zinc’s website because Amazon kept switching me to another vendor and I was concerned I would get a simulator zinc from the bad lot with this same problem. The bad zinc has now been taken out of the system ha ha Ha. Deep sixed.

Initially It made me wonder if I had the wrong size zinc but I know I have a seven eights inch shaft and ...well I am not crazy yet but coming close with this quarantine.

The proper zinc is on its way I’ll check it out and let you know how it goes.

Cheers to the new year!!! thankfully 2020 is almost behind us!!!

Elizabeth
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  #2   IP: 73.192.77.162
Old 12-26-2020, 02:22 PM
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Elizabeth_B29 Elizabeth_B29 is offline
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Zinc continued

Also of note is the fact that unless you specify you will receive a zinc with a standard screwdriver slot machine screw head instead of the socket head cap screw with the hex type head. You can specify this if you call West Coast Zincs

I like the hex head because I feel like I can secure it well and not strip it out. Divers like the slot in the machine screw head because they don’t have to carry as many tools around underwater when they were replacing hundreds of zinks on service calls.

Hope this helps,

Elizabeth
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  #3   IP: 72.69.36.126
Old 01-02-2021, 01:26 PM
tenders tenders is offline
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So is it possible you got a counterfeit zinc with bad quality control? Or just one that slipped past QC. Seems like something a Dremel might have been able to rectify.
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  #4   IP: 47.142.133.234
Old 01-02-2021, 03:40 PM
JOHN COOKSON JOHN COOKSON is offline
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NOPE!

Quote:
Originally Posted by Elizabeth_B29 View Post
I was assured that this is OK and that my concerns about it slipping on the shaft were unfounded. So that’s what is being shipped out to me.
Elizabeth
BS.
You're on the right course here.
If the zinc is sliding on the shaft it could result in a rattle.
The zinc needs to be in electrical contact with the shaft to do any good. This is why it is a good idea to get the shaft to bare metal before applying the zinc.

ex TRUE GRIT
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