| Re: Boom traveler queston
[Re: jmhoying]
#11530 10/10/02 01:02 PM 10/10/02 01:02 PM |
Joined: Jun 2001 Posts: 12,310 South Carolina Jake
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Carpal Tunnel
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Posts: 12,310 South Carolina | about all you could do would be to vary the pressure the boom puts on the mast for mast rotation. Boomless cats have a similar short traveler built into the clew of the main sail to which the upper main sheet block attaches. Since the end of the sail isn't fixed by the boom, this traveler performs the similar function of an outhaul on a boom equiped sail. I really don't see the advantage of adding this kind of traveler to a sail plan with a boom.
Jake Kohl | | | Re: Boom traveler queston
[Re: Jake]
#11531 10/10/02 02:35 PM 10/10/02 02:35 PM |
Joined: Mar 2002 Posts: 284 Norfolk, VA Dan Berger
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Posts: 284 Norfolk, VA | OK--I'm the one Jack is talking about. The reason I was interested in adding the boom traveler was that the hanger is aligned with the main traveler when the boat is going down wind. When I'm going up wind, the blocks are at an angle that puts a LOT of pressure on the gooseneck and it makes it very difficult to cleat/uncleat them. I have adjusted the angle of the main block cam as low as it will go, but I have to practically stand up on the boat to cleat the main! The only other alternative I could think of would be to move the hanger in a little and find a happy medium.
Dan Berger Norfolk, VA A Cat USA139 Supercat 15
| | | Re: Boom traveler queston
[Re: Dan Berger]
#11532 10/10/02 03:09 PM 10/10/02 03:09 PM |
Joined: Jun 2001 Posts: 12,310 South Carolina Jake
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Posts: 12,310 South Carolina | Ahah...O.K. now I see what you are after. I take it that your cam cleat for your blocks is upside down? (since you have it as low as possible and still have to stand up to cleat it). Your mainsheet block/cleat looks something like this? http://www.harken.com/press/038to1.phpMost of the Harken blocks have the option to place the cam cleat inverted or rightside up. If you have a Harken Hexarachet mainsheet system you can probably change the position of the cleat. All my Nacra boats and my Hobie 18 have the cleat upwards (hold the sheet low to cleat and up to uncleat) and I have no problem with adjusting to a good cleating angle. Perhaps you can move your cleat instead of all the trouble of a traveler on the rear beam (which will probably not help much and will definitely screw with your mast rotation).
Jake Kohl | | | Re: Boom traveler queston
[Re: Jake]
#11533 10/10/02 03:34 PM 10/10/02 03:34 PM |
Joined: Mar 2002 Posts: 284 Norfolk, VA Dan Berger
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Posts: 284 Norfolk, VA | It does look like that--I have a small pulley attached to an eyestrap on top of the cam base, so I have to either keep the cam cleat on the bottom or get rid of the pulley and lose a little purchase. Perhaps moving it would be the best idea--hadn't thought of that. I got the boom traveler idea from my old Hobie 17 sport that had the traveler on the boomlet. I'm still concerned about all the pressure on the gooseneck when I'm close hauled, though. It just seems to me that it would be better for the rig if I had the boom traveler working to keep the pressure of the main at a constant angle.
Dan Berger Norfolk, VA A Cat USA139 Supercat 15
| | | Re: Boom traveler queston
[Re: Dan Berger]
#11534 10/10/02 04:04 PM 10/10/02 04:04 PM |
Joined: Jun 2001 Posts: 12,310 South Carolina Jake
Carpal Tunnel
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Posts: 12,310 South Carolina | I can identify with excess gooseneck loading! My new sails on my 5.2 were lower in the foot and took away the little bit of angle that was in the boom so that it was now pretty level when sheeted in tight. This left very little forward pressure to rotate the mast. I added a second bail about 6" out from the original but it was too far out and bent the snot out of my goosneck!
Jake Kohl | | | Re: Boom traveler queston
[Re: jmhoying]
#11535 10/11/02 08:02 PM 10/11/02 08:02 PM |
Joined: Jul 2001 Posts: 344 Arkansas, USA Kirt
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Posts: 344 Arkansas, USA | Most of the older 18 squares have a traveler on the boom- with an 11' beam it's quite necessary! But then the boom attaches to the front beam so it doesn't alter mast rotation doing this. The traveler must be parallel to the tramp (or 90 degrees to clew load actually) or it will tend to pull/push car in or out as you sheet (instead of straight down). Greatly increases ability to travel up or down since the mainsheet now does not "fight" or "help" (depending on which way you are going!) the traveler car moving in or out. On the Taipans and "A"'s we use a webbing "strop" from the clew grommet, around the mast, and mainsheet blocks hook directly into that-
Booms can be very light then as the large sheet loads are directly transmitted to the clew of the sail- Boom only has to resist the pressure from the outhaul/inhaul and webbing slides easily on boom-
Regards!
Kirt
Kirt Simmons
Taipan #159, "A" cat US 48
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