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Re: Breaking Masts [Re: ] #65901
02/08/06 03:41 PM
02/08/06 03:41 PM
Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
ncik Offline OP
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ncik  Offline OP
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Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
I measured the spreader height this morning before work...2.5m above mast base. It has been lowered by a previous owner about 30cm. I think I'll raise it a bit higher, because the distance between hounds and spreaders is about 2.7m.

Nick.

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Re: Breaking Masts [Re: ncik] #65902
02/09/06 07:04 AM
02/09/06 07:04 AM
Joined: Nov 2002
Posts: 612
Cape Town, South Africa
Steve_Kwiksilver Offline
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Steve_Kwiksilver  Offline
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Joined: Nov 2002
Posts: 612
Cape Town, South Africa
Hi Nick,
Just looking at your mast-break reminded me of mine a few years ago, going upwind in about 18-20knots with 170kg on the wire (fat friend ), the mast rotator arm bent suddenly allowing the mast to over-rotate rapidly, and we hit the water with a new two-piece mast. It broke almost in the same place as yours, a little closer to the spreaders in my case. My theory is that the mast rotated to 90deg or even past, with 2 on the wire the spreaders are facing fore-and-aft, no lateral support at all, bang. The other factors you mentioned could also be the cause, I`m just offering a possible explanation if you had not set the mast rotator yet and it was over-rotated.
I don`t believe the squaretop caused the failure, but the additional power may have assisted, although I`m not convinced as you say you had not powered up the main fully yet. There are too many possibilities, only way to know for sure is to get a new mast and try it out again ! (just insure the mast first )

Steve

Re: Breaking Masts [Re: Steve_Kwiksilver] #65903
02/20/06 04:14 AM
02/20/06 04:14 AM
Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
ncik Offline OP
old hand
ncik  Offline OP
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Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
woot! finally bought a new mast section...it appears as though a calypso 14 mast is the same or very similar to a mosquito section...will let you know how it fairs...

Nick.

Re: Breaking Masts [Re: ncik] #65904
02/21/06 07:38 PM
02/21/06 07:38 PM
Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
ncik Offline OP
old hand
ncik  Offline OP
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Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
Does anyone else have preferred spreader heights above the mast base? I'd just like to get a few values to see how my current setup compares.

Nick.

Re: Breaking Masts [Re: ncik] #65905
03/11/06 04:37 AM
03/11/06 04:37 AM
Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
ncik Offline OP
old hand
ncik  Offline OP
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Joined: Oct 2005
Posts: 951
Brisbane, Queensland, Australi...
Finally got back on the water today. Good 15 knot breeze. Finally had the guts to pull a bit more downhaul on the new mainsail too and it seemed to work like a charm. Now I just have to spend some serious time on the water.

Nick.

Re: Breaking Masts [Re: ncik] #65906
03/20/06 07:53 AM
03/20/06 07:53 AM
Joined: Jan 2006
Posts: 556
Somers, Westernport Bay, Victo...
Peter_Foulsum Offline
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Peter_Foulsum  Offline
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Joined: Jan 2006
Posts: 556
Somers, Westernport Bay, Victo...
Nick,

What heights did you settle on for the spreaders, diamond wires (upper and lower) and the hound ? I'm gathering info for my next mast. Are you happy with the overall results ?


Mosquito 1814
Macka Mozzie
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