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Author Topic: Mast bend
Nicklas Posted: 07-Jun-06 15:48
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I 'm the owner of the BUZZ 923. I bought it end of last year and I have not a lot of experience. Nevertheless each time i'm sailing, It gave me a lot of pleasure.
I read carefully the Buzz Tuning Guide. Very interesting but I still have some tuning problems.

I'm suprised of the curve of the mast when the mainsail is hoisted. First at all, the mainsail is difficult to hoist when it reaches the 2/3 of the mast. And when completely hoisted, the top of the mast bends a lot. The swatcher position was set to 0, no kicking strap tension ...

Is it normal - I mean is it due to the boltrope luff of the Buzz mainsail ? or Is it due a too high tension of the battens?
And so how tight should be the battens? Currently they don't move inside the batten pocket when the mainsail is flat on the floor. Should the battens be eased to flatten the mainsail in case of strong wind?
Or Should it use , instead, the swatcher to limit or decrease the mast bend.
If so, the tuning guide mentions that the "Swatcher Position 0 (No bend)" for wind force 2-3 Bf, does it mean that the mast must be straight (Position 0) when the mainsail is hoisted OR without the mainsail ?

Thanks for your help and your answers to those (quite a lot ))) questions.
 
Pete Lindley Posted: 07-Jun-06 17:19
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No sails up.
Lean the mast to the back of the gate. Where the shrouds dangle, pin 'em.
Swatcher off, pull jib up and rig tension on to 26 on the jib luff or 28 on the shrouds I think, and check the rake. You should be in the right area for rake.

If you are too raked, and the mast is bent with no main up, check your spreaders. They could be swept too far back. Set them so that the two bolts on each spreader are in the front holes on the spreader bracket.

Should be fine.
 
Jane_Mark Buzz 847 Posted: 08-Jun-06 09:12
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Has your boat been sailed in muddy estuaries and therefore got any residues of mud in the mast track from when it has capsized and hit the bottom?? We sail in an estuary and if we donít clean the mast after a capsize it sets like cement and it takes a gorilla to hoist the main so I would suggest giving it a good clean. While you have it on its side I would also suggest a squirt of some dry lube in the mast trackĖ this always seems to help the sail slide up the final bit. We also find if the halyard is too salty (from capsizing in the sea) it isnít so flexible and can make the process harder so always wash it down well if you donít sail on fresh water.

Jane and Mark
 
Nicklas Posted: 08-Jun-06 15:45
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Thanks for your suggestions. The mast track seems clean, but anyway, as you proposed I will put a a squirt of some dry lube in the mast track.

When no sail up, it is OK: no mast bent and the mast rake seems good.
But once the mainsail is up, the mast bends a lot. Is it normal or not ? . If not is it due to a high tension of the battens? Currently the battens don't move inside the batten pocket when the mainsail is put on the floor? It seems good.

Usually, should the mast be straight when the mainsail is up or not? Should it use the swatcher to set upright the mast?

Thanks Nicolas
 
ifoxwell Posted: 09-Jun-06 09:10
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I suspect that you havenít had a reply to the question of mast bend precisely because there is no simple answer.

From my experience there is a small amount of bend from the spreaders up once the sail is hoisted and sweated to the top. However not a great deal.

If yours is bending more than what might be considered a little then there is pressure being put on the mast some where. Assuming its not something silly like the kicker or Cunningham being on to tight I would suspect that it is something to do with the sail. Either you have tensioned the up haul excessively or the bolt rope is tight in the track some where.

Once I have pulled the sail up I normally pull on a load of Cunningham and release it, to settle everything in. Might help you?

Ian
844
FeFe Fiasco
 
Pete Lindley Posted: 09-Jun-06 09:14
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Email me a photo so I can upload it for all to see.

ISOfeedback2 'at' asafeplace . co . uk

Pete
 

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