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Loose rivets on eye for kicker take-off
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Posts: 44 		Post Options Post Options   Quote Wobble Quote  Post ReplyReply Direct Link To This Post Topic: Loose rivets on eye for kicker take-off
    Posted: 15 Sep 10 at 7:19pm
Sounds more up to the load than rubber!

Still, I'd like to keep things as simple as possible and go with bigger rivets in the enlarged holes. (The bolt and thread method, along with fitting from the back of the mast, are good options if it doesn't pan out).



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Posts: 8941 		Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 15 Sep 10 at 4:11pm
The kicker take off point on my new Proctor mast was bolted right through the mast, front to back, which seems like a strong solution.
Previously, I've but the fixing point on the back on the mast and brought a strop round to the front, like you often see on booms these days.
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Posts: 682 		Post Options Post Options   Quote English Dave Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 10 at 1:56pm
I'll wait and see then, Medway! The rawlnut holds the spinlock for the spinnaker halyhard in place. The load is mainly shear. The design of the spinlock means it's difficult to get a rivet gun in to use a pop-rivet and I have previously used self-tappers. This has proved the best option so far!
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[QUOTE=English Dave]Have a look at rawlnuts here: http://www.rawlplug.co.uk/index.php?option=com_content&task=view&id=83&Itemid=0
[ /QUOTE]
Ah, what nostalgia! I used those years ago to anchor my crew's toe-straps on a boat wherein the builder had omitted the underfloor wood blocks at the appropriate foreward points.
Once a year I'd see my crew disappear backwards over the side when the rubber let go. He always laughed and never complained - they made 'em tough in those days!
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Posts: 682 		Post Options Post Options   Quote English Dave Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 10 at 6:10pm
Have a look at rawlnuts here: http://www.rawlplug.co.uk/index.php?option=com_content&task=view&id=83&Itemid=0

I use them on bits of the main beam of the Hurricane that I can't reach. They expand behind the hole as you tighten - just like a rivet I guess. Also the outer is made of rubber so so electrolytic corrosion. I've been using them for a couple of years now in salt water environment with no problems.
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JimC View Drop Down
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Posts: 6582 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 10 at 6:09pm
But could you split that down? I've used three points on a boat that had really serious kicker loads...
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Posts: 44 		Post Options Post Options   Quote Wobble Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 10 at 5:04pm
Kicker is cascaded and does indeed have two anchor points... just the one giving trouble.
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Posts: 6582 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 10 at 2:44pm
If the number of rivets against the load is marginal then they always will work loose. Poprivets really are a rather crude solution... If you are using a cascade kicker then you can split the load to multiple anchor points whioh will bring the loads under control. Ultimately though bolts, especially with reasonable size washers on, are a far better solution even if they are a pain to fit.
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Posts: 44 		Post Options Post Options   Quote Wobble Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 10 at 12:58pm
Thanks Timeintheboat.

I see what you mean now. I suppose that would be a good method, probably better in the long run,  but I would prefer to stick to rivets, provided I can use the same holes. I think it will work ok if I do a proper job, unlike last time!
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Posts: 395 		Post Options Post Options   Quote GybeFunny Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 10 at 12:58pm
Originally posted by timeintheboat

Err no. Take the mast foot off and pull the bolt up the mast using thin cotton tied in the thread. I dropped a needle through the hole tied to the thread at the end.

Use tweezers or the ilk to pull the bolt through the hole, bolt from the outside and trim the bolt.

For the spreaders I had the mast up against the house and a ladder up next to it.

 
Thanks for that explanation, I had heard about using thread before but never knew how, it didnt occur to me to have the bolt on the inside! But how do you hold the back of the bolt that is inside the mast while you tighten the nut?
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