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G.R.F. View Drop Down
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    Posted: 04 Oct 10 at 10:59am
So, I need to do something about the Alto boom, the mast is carbon, the gnav is about rotted away and the gooseneck is a round section. So either I need to search classes that have a similar fixture or cobble something together.

In an ideal world I'd like an upside down version of the RS100/300 wheels on the Gnav doo dah only maybe run the wheels on the boom, but first I need to order it all up.

Ordering booms online is tricky given there is no such thing as 'spare boom for Mk 1 Alto' you can just go 'add to basket'.

So I guess it's locate some carbon tube then find all the bits and self assemble.

Or does anyone know different? (with links if poss.)

Ian (foxwell) mentioned just get yourself a Superspars boom , but which one is the question, what classes use them.

I did wonder about B14 booms but they're conventional kicker, which I'd like to avoid if possible.


Edited by G.R.F. - 04 Oct 10 at 11:00am
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Andrewst View Drop Down
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Posts: 129 		Post Options Post Options   Quote Andrewst Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 10 at 12:55pm
B14 booms are alloy. So no good for your carbon quest.
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Merlinboy View Drop Down
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Posts: 3169 		Post Options Post Options   Quote Merlinboy Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 10 at 1:10pm
Grumpf, you could order a 505 Carbon boom from P&B but this is set up for a conventional kicker.  Try speaking to aardvarke boats http://www.aardvarkracing.co.uk/spars-and-tubes and get them to make you one to your specification.  I have talking with Terry about building me a 505 boom, they offer a bespoke product at a very good price!!
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Posts: 3958 		Post Options Post Options   Quote winging it Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 10 at 1:16pm
a contender carbon boom is just a tube with no fittings apart from outhaul.  Main and kicker take off are from straps.  Made by superspars.
the same, but different...

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Posts: 3169 		Post Options Post Options   Quote Merlinboy Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 10 at 1:31pm
Graeme can you post pictures of how your Gnav system works at present?  I am not sure how a boom that has not been designed for a gnav would cope with the different loadings. We used to have a separate goose neck on the mast for the top of the gnav and a slider (couple mm of bigger the the boom diameter) that ran along the boom.The slider then spread the load.  the system worked really well.  But if i was in your situation i would definitely speak with Aardvark racing, and see if they can make you a new system.  I would think its fairly easy.
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Posts: 842 		Post Options Post Options   Quote Skiffybob Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 10 at 2:37pm
Would a 49er boom & gnav not do the job?
 
You can buy them from Ovingtons.
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G.R.F. View Drop Down
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Posts: 4028 		Post Options Post Options   Quote G.R.F. Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 10 at 3:04pm
That would be ironic, me finding a use for a 49er.. LOL


Thanks for all the tips, lots to work with, not sure I'm any the wiser..

I need to measure the boom length I guess, that would be a start.

Shame they don't just have standard booms sold by length.
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G.R.F. View Drop Down
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Posts: 4028 		Post Options Post Options   Quote G.R.F. Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 10 at 6:19pm
Originally posted by turnturtle


some f**ker in dingo world actually wants to measure your sails, find out about the periphery control ine crap that hangs off your mast and then build  a boom from scratch to make it fit ensuring they reinforce the load points... .

Were that the truth..

As it is some f**ker in dingo world just things it's a great idea to fit a boom with a square section to a gooseneck with a round shaft, obviously the square peg in the round hole deal never quite gelled here.

Then to fix it thought it would be a great idea to drill through the whole ensemble and fit a split pin. That would be a stainless split pin to an alloy extrusion in a salt water environment (it gets better) held together with pop rivets..

f**ker in dingo world is right..


Edited by G.R.F. - 04 Oct 10 at 6:21pm
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English Dave View Drop Down
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Posts: 682 		Post Options Post Options   Quote English Dave Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 10 at 8:33pm
Originally posted by turnturtle

oooh sh1t, sounds like you've bought a right bunch of horse's arse prototype to me Graeme... you should have got a nice Hobie 16 instead, they've been around for years, built like a brick outhouse and they're really cool.

OKay I lied about the last bit...
Or maybe a Dart 16. No boom to worry about at all. LOL
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Posts: 853 		Post Options Post Options   Quote hollandsd Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 10 at 8:57pm
Hi Graeme
 
I can sort it all out for you if you would like, I can get hold of the new boom and the appropreate fitttings so the nav will work properly with the mast you have.
The fittings will be the same or simmilar to the RS500 you had.

Give me a PM if you want my help.

Dan
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