Friday, June 09, 2006

MAST, SPREADERS AND BOOM





SPREADER INNER END


Because the LINK mast is so limber, proper pivots were made up for the inner ends of spreaders that allowed the spreader to swing fore and aft as well as up and down.







SPREADER OUTER END


Spreader outer end kept slipping on shroud.

Secure fittings were made for outer end that ensure slippage would not occur.


Blue-aluminum plug fits inside spreader[pushfit inside spreader] head is same O.D. as spreader[radius corners well so that shroud does not go over sharp corners]-Core drilled out to allow 1/8" wall inside spreader[to allow rivet head to expand]
Yellow-1/8"stainless pipe plug-27T.P.I.
Red-1/8" shroud wire
Green-3/16" aluminum pop rivets. They can easily be drilled out to remove shroud, if necessary.
Cap is made from aluminum-1/4" larger than spreader O.D. to allow 1/8" wall around spreader 1/8" slot cut top and bottom to allow shroud to be installed.
Use caution when tapping plug hole so that plug traps wire securely before plug threads [tapered] bottom against cap threads].
Cap body bored out to spreader O.D. to depth of slot.[Radius end of cap well so that fore-sails and main sail do not rub against sharp corners].




BOOM CRUTCH


Suports were made up for a boom crutch that would prevent end of boom marking top of lazarette cover.



GOOSE NECK SLIDE

After the main sail is pulled as high and as tight as possible and cleated, the gooseneck can be left at the top of slide for light winds [creating a powerful sail] or for stronger winds, the boom can be pulled to the bottom of the slide [creating a flatter sail shape]

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