I'm having one heck of a problem trying to get the proper mast bend on my mast. I've meticulusly followed the Hunter manual and a very detailed post here by Peter Suah but in spite of it all I just cannot get the proper mast bend on my H22. The mast stands straight when all is loose. I losen all rigging, set the rake but when I tighten the uppers the mast bends opposite of what it should be. I've loosened all rigging three times and restarted the procedure but with the same results. The mast bending to aft in the middle and not fore. What possibly could be the problem???? Thanks, Pete
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Mark
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Pete
Mark...
Mark, My spreaders do sweep back somewhat. I'd say no more than 10º at the mast. The rigging stays on the deck are about 4" aft of the mast.
Mark, My spreaders do sweep back somewhat. I'd say no more than 10º at the mast. The rigging stays on the deck are about 4" aft of the mast.
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Mark
Well try this
I figure that you do not have a back stay??? SO: Loosen all rigging as you have done many times before. Adjust the forestay to the correct length for desired rake. Tighten uppers to bring on the correct bend. Then wind up lowers until just before the mast ries to invert. Rule of thumb for bend is about 1.5% of length of luff. I can't find any detailed pictures of the rig for this yacht on the net . Are there reverse diagonals..
I figure that you do not have a back stay??? SO: Loosen all rigging as you have done many times before. Adjust the forestay to the correct length for desired rake. Tighten uppers to bring on the correct bend. Then wind up lowers until just before the mast ries to invert. Rule of thumb for bend is about 1.5% of length of luff. I can't find any detailed pictures of the rig for this yacht on the net . Are there reverse diagonals..
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Mark
Just another thought
If you have the mast leaning toooo far forward when the uppers are tightened the mast will bend backwards.
If you have the mast leaning toooo far forward when the uppers are tightened the mast will bend backwards.
Why you may be having trouble bending the mast
Pete: My suggested procedure was for the H23 rig, which was designed to be bent. It is a fractional rig (forestay attached to mast below the masthead) with spreaders that are unmistakably swept back. The forestay and upper shrouds all attach to the mast at about the same height. The H23 chainplates (where the shrouds attach to the hull) are about a foot aft of the mast base and the spreaders are about midway between the chainplates and the point where the stays attach to the mast. The H22 rig has none of these features. Here are links to some photos from HOW: Photos of H23 rig: a) showing fractional rig (note attachment of upper shrouds and forestay to the mast): http://album.sailboatowners.com/detail?photo=2618 b) showing swept-back spreaders from above: http://album.sailboatowners.com/detail?photo=2594 Photo of H22 rig (it's a BIG picture!): http://album.sailboatowners.com/detail?photo=3868 The H23 forestay and upper shrouds can support the mast without the need for a backstay, and the mast can be pre-bent as needed using the shrouds to suit the prevailing conditions. Tightening the backstay pulls the masthead back and simultaneously bows the midmast even farther forward. There is nothing on the H23 rig to oppose the pull of the backstay, so it is VERY effective. Conversely, the backstay on your H22 is needed to help support the mast. Since the backstay is opposed by the forestay on a masthead rig, tensioning it won't bend the rig much. Instead, it tensions the forestay more. This decreases the forestay's sag to leeward, moves the draft of the jib forward and flattens the entry, which help to improve pointing. I don't know much about using backstay tension on a masthead rig, but you might want to take a look at the HOW Sail Trim Forum for some ideas and discussion on the subject. Good luck. Peter H23 "Raven"
Pete: My suggested procedure was for the H23 rig, which was designed to be bent. It is a fractional rig (forestay attached to mast below the masthead) with spreaders that are unmistakably swept back. The forestay and upper shrouds all attach to the mast at about the same height. The H23 chainplates (where the shrouds attach to the hull) are about a foot aft of the mast base and the spreaders are about midway between the chainplates and the point where the stays attach to the mast. The H22 rig has none of these features. Here are links to some photos from HOW: Photos of H23 rig: a) showing fractional rig (note attachment of upper shrouds and forestay to the mast): http://album.sailboatowners.com/detail?photo=2618 b) showing swept-back spreaders from above: http://album.sailboatowners.com/detail?photo=2594 Photo of H22 rig (it's a BIG picture!): http://album.sailboatowners.com/detail?photo=3868 The H23 forestay and upper shrouds can support the mast without the need for a backstay, and the mast can be pre-bent as needed using the shrouds to suit the prevailing conditions. Tightening the backstay pulls the masthead back and simultaneously bows the midmast even farther forward. There is nothing on the H23 rig to oppose the pull of the backstay, so it is VERY effective. Conversely, the backstay on your H22 is needed to help support the mast. Since the backstay is opposed by the forestay on a masthead rig, tensioning it won't bend the rig much. Instead, it tensions the forestay more. This decreases the forestay's sag to leeward, moves the draft of the jib forward and flattens the entry, which help to improve pointing. I don't know much about using backstay tension on a masthead rig, but you might want to take a look at the HOW Sail Trim Forum for some ideas and discussion on the subject. Good luck. Peter H23 "Raven"
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Pete
Thanks Peter & Mark
Thanks for your help. It seems that I spent a day trying to put a mast bend into my H22 to find out that it is not rigged for bending. After a close examination of the H22 Hunter manual, I found that it does not specifically list the H22. Interesting that the Hunter people sent me a manual that doesnt address my boat at least that is for my mast rigging. After your questions about my spreaders, headstays & backstays I now can see that my mast will not bend as fractional types do but did accomplish getting my mast straight from left to right. Thanks again
Thanks for your help. It seems that I spent a day trying to put a mast bend into my H22 to find out that it is not rigged for bending. After a close examination of the H22 Hunter manual, I found that it does not specifically list the H22. Interesting that the Hunter people sent me a manual that doesnt address my boat at least that is for my mast rigging. After your questions about my spreaders, headstays & backstays I now can see that my mast will not bend as fractional types do but did accomplish getting my mast straight from left to right. Thanks again
Manual is worthless for rigging.
Believe it or not I still have the original manual for my 22 and it's basically worthless. There is the most minimal amount of 22 specific information followed by mostly general and generic boating stuff. I see a lot of posts from people who have requested a copy of the manual only to be let down when it arrives. You would think Hunter would have provided a bit more information about rigging and boat specific specs. in the thing. Oh well. Fair winds, Todd
Believe it or not I still have the original manual for my 22 and it's basically worthless. There is the most minimal amount of 22 specific information followed by mostly general and generic boating stuff. I see a lot of posts from people who have requested a copy of the manual only to be let down when it arrives. You would think Hunter would have provided a bit more information about rigging and boat specific specs. in the thing. Oh well. Fair winds, Todd
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