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Old 08-02-2012, 20:02   #16
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To isolate the stainless from the aluminum, you can stick onto the parts of the stainless that will contact the aluminum some thin rubber tape like is sometimes use pd for electrical work. Punch holes for the rivets and install. A liberal amount of Tef Gel would not hurt one little bit either.
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Old 04-03-2013, 20:24   #17
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Re: Installing Mast Tang For Solent Stau

Well a year latter, what happened? How do you get the holes for the rivets to match up?
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Old 04-03-2013, 21:13   #18
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Re: Installing Mast Tang For Solent Stau

Don't think it was directed at me, but I'll respond anyway. We ended-up using machine screws instead of rivets. Where we were at the time, I couldn't locate stainless rivets and machine screws seemed just as easy. Here are some photos:




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Old 04-03-2013, 21:25   #19
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Re: Installing Mast Tang For Solent Stau

Hi FunJ,

Thanks for responding. You dropped the mast. Smart move not an option for me. So once you had your slot cut how did you get 8 holes in the Tang blindly lined up?
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Old 04-03-2013, 21:35   #20
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Re: Installing Mast Tang For Solent Stau

I laid the tang on top (outside the mast) and marked all the holes with a punch. Even then, two didn't lineup completely... I had to massage those two. from 40 feet down, you cant see that two are a little crooked. Keep in mind, these just hold the tang in place. the strength comes from the two parts being in the mast.
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Old 04-03-2013, 21:37   #21
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Re: Installing Mast Tang For Solent Stau

Oh yeah. We had to drop the mast anyway for the Erie Canal. Decided to replace all standing rigging right there while the mast was down.
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Old 05-03-2013, 02:44   #22
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Re: Installing Mast Tang For Solent Stau

You could consider drilling one hole and then using a lightweight router to extend the slot if you have or can borrow one, like the Bosch narrow-motor or the Ryobi ripoff (eg HPR700V) both of which have plenty of grunt for aluminium up to maybe 6mm thick.

I would make up a temporary guide out of timber which supported the sole plate tangential to the front face of the mast, with an upstand each side so the router had no choice but to travel up the midline.
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Old 08-05-2013, 19:51   #23
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Re: Installing Mast Tang For Solent Stau

Hi Fun where did you get your tang from? My Canadian supplier has after 4 weeks told me that he can not get them?
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Old 08-05-2013, 20:22   #24
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Re: Installing Mast Tang For Solent Stau

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Originally Posted by NorthPacific View Post
Hi Fun where did you get your tang from? My Canadian supplier has after 4 weeks told me that he can not get them?

I actually didn't use the Wichard fitting, but one from Sparcraft. Sparcraft of USA were extremely helpful in getting this for me, and the price was a bit less ($20 ish) and the same as Wichards, but without the logo and flat tabs on the Sparcraft that go to the mast.
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Old 08-05-2013, 20:53   #25
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Re: Installing Mast Tang For Solent Stau

KZ marine in NZ is worth a look they have a ball tang type fitting, the sizes available cover from 5 to 14mm diameter wire, with either swageless fittings (norseman type) or the usual swage fittings. <www.kzmarine.co.nz> download the Sea Rig catalogue, page 23. There are aus, eu. , and American (Carribean) agents.
I have used one for my Solent stay.
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Old 08-05-2013, 22:08   #26
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Re: Installing Mast Tang For Solent Stau

Can't believe anyone would cut the slot with a circular saw or grinder. Drill holes top and bottom the width of the slot, cut the slot with a saber saw with a not too fine metal blade. Easy peasey, clean up the sides with a file if you need to. Don't believe I'd want to do this job with the mast in place. Too much of a challenge in a bosun's chair and maneuvering the fitting into place would be a challenge. Relatively easy on the ground with gravity working with you.

My old boat had the staysail tang attached to the outside of the mast with drilled and tapped machine screws. Still up there after almost 40 years. Used LocTite on the MS threads back then and electrical tape to insulate the SS fitting from the mast. Woud use TefGel today.
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Old 09-05-2013, 05:02   #27
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Re: Installing Mast Tang For Solent Stau

Installed one these recently on an X-Yacht mast. Added 2- 5/8" x 6'' tang straps, formed to the mast shape, upwards on the stay angle. Increased the fastener size for the top hole to take the fitting and the tang. Fastener is in total shear, and little tension.
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