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Old 25-08-2010, 19:10   #16
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Originally Posted by Pete7 View Post
Has me wondering how well our loose footed mainsail would set if we took the boom away completely, put the main sheet on the clew and clipped is to the pushpit rail

That's certainly the approach I would take. A loose-footed main with end-boom sheeting would be fairly simple to jury-rig on all points of sail without any semblance of the boom remaining. Especially if you had four snatch blocks available to help create a new virtual traveler. You'd lose a bit of performance downwind, but on anything less than a deep broad reach, you'd be gold.

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Old 25-08-2010, 20:02   #17
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Ya need an internal sleeve........

"He sounds confident he can fix it by welding the aluminum at the break and creating a type of support sleve which he will fasten on the on the outside of the boom." I would not trust this method, I would recommend an internal sleeve about 2' long with plug welds to give strength to the boom, then the external welded bracing shorter than the internal. Relying on the external collar alone may cause an eventual tear where the edge of the collar is welded to the boom due to flexing and work hardening. Internal stiffening with plug welds will prevent work hardening of the aluminum at the edges of the circumference welds. It has been my experience with aluminum that it cannot be treated like steel as far as welding repairs go, staggered edges and well supported joints will make for stronger repairs.

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Old 07-09-2010, 17:30   #18
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I went with both, an internal and external sleeve. Also had the welder reinforce the gooseneck
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Old 29-01-2017, 08:34   #19
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Re: Boom Cracked in Half

I'm new at sailing but can add some advice regarding corrosion on booms or masts. ALWAYS apply a "non-oxide" paste i.e. Denso, to any screws or plates or other secured fittings of dissimilar properties i.e stainless steel to aluminum or brass to aluminum or stainless steel.
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Old 29-01-2017, 12:10   #20
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Re: Boom Cracked in Half

Hello Jack, I can see this thread has been revived.

Our boom broke once, in an unexpected gybe, where it broke was immediately aft of the vang attachment. Upon examining the boom stub, the breakage was partly due to our habit of cinching the main sheet down tight--you could see the area of old metal fatigue, and the new tear. The repair consisted of inner and outer sleeving; in our case, the outer sleeve is screwed in and the rigger who did it, used lanolin for the anti-seize/anti-corrosion. Prior to that, we used to use the silver anti-seize.


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