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Symmetric pole systems |
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JimC
Really should get out more Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6649 |
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Topic: Symmetric pole systems Posted: 05 Jan 08 at 5:11pm |
Yep, except rather than the ramp thing in the middle you just have a plastic fairlead that it hooks up on when you push the pole out. The ramp thing that catches both ways seems like an extra complication to me, and when gybing one of *these* poles you don't want complication! The photo is at the 76 Worlds in Australia BTW. Note the wooden Bethwaite wing mast! Edited by JimC |
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tmoore
Really should get out more Joined: 01 Nov 07 Location: Wales Online Status: Offline Posts: 880 |
Post Options Quote Reply Posted: 05 Jan 08 at 5:13pm |
you could try the 'chase' system. here you have a fixed downhaul (sprung clip) which stays on all the time. the pole comes either under or over (cant remember which) the jib sheets. each time you hoist/drop you clip on the uphaul. not used this system but i know it was used by richard estaugh to win the gp worlds a few years back. alternatively the bow and arrow system (ramp) is very good. just rig the rope between the pole ends AROUND the loop for the rope and the pole goes THROUGH the loop. that way you cant lose the pole (from experience ) |
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Landlocked in Africa
RS300 - 410 Firefly F517 - Nutshell Micro Magic RC yacht - Eclipse |
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Post Options Quote Reply Posted: 05 Jan 08 at 6:41pm |
Here's a pic of the "trolley" system. Note the bungee from the back of the boom around the front of the mast and back to the end of the boom. The inner end of the pole has a pulley attached which runs along the bungee. The pole uphaul/downhaul is permanently attached to the outer end of the pole. http://www.yachtsandyachting.com/photos/?s=64&PID=18398 I'm hoping that this arrangement will be quicker for deployment as there's no hook or loop (metal or rope) to engage. Also easier to stow the pole as you just unclip the guy and sling it back in, no faffing about getting it in to a craddle. The downside could be you have to bring the pole in to gybe also the bungee on the leward side of the sail might ruin the mainsail shape. As you say a fork end would be better (See ColHs link (Nice one)) Bringing the pole in to gybe is not a problem if the kite stays full. That Cherub pic must be an old one Jim. As for GRF implying that the symmetric is old fashioned, I've got a pic of a 1910 something or another with an asymmetric kite. I will scan it and post when I get around to it. Asymmetric might be easier but it's not better, I just prefer the other Edited by GK.LaserII |
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Lukepiewalker
Really should get out more Joined: 24 May 06 Location: United Kingdom Online Status: Offline Posts: 1340 |
Post Options Quote Reply Posted: 05 Jan 08 at 6:56pm |
I see..... I'm slightly ashamed to say I have never seen that system before.
My concern about that would be that if your crew was just lobbing it backwards... that's where you are standing.... I have a friend who has a fork end on his Mirror spinnaker system which is ideal for the singlehanding as when he releases the pole the guy just pops out without requiring another hand to free it. The only downside is the potential for the guy to drop out during the launch, haven't seen it happen often. |
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Ex-Finn GBR533 "Pie Hard"
Ex-National 12 3253 "Seawitch" Ex-National 12 2961 "Curved Air" Ex-Mirror 59096 "Voodoo Chile" |
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HannahJ
Really should get out more Joined: 23 Jul 05 Location: United Kingdom Online Status: Offline Posts: 861 |
Post Options Quote Reply Posted: 05 Jan 08 at 8:46pm |
What puzzles me about the single-ended pole system with a fork on the end that I know is used on Mirrors for small crews, is how the spinnaker sheet is put into the fork - surely the crew has to do that anyway?
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MIRROR 64799 "Dolphin"
The pessimist complains about the wind; the optimist hopes it will change; the realist adjusts the sail |
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Post Options Quote Reply Posted: 05 Jan 08 at 9:09pm |
Yep and the more I think about it, maybe the fork thingy is not appropriate. The one in ColHs link looks like it has to be pulled off thus collapsing the spinny. At least with the standard hook the guy will drop out when the release string is pulled. will try it and see. Edited by GK.LaserII |
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Lukepiewalker
Really should get out more Joined: 24 May 06 Location: United Kingdom Online Status: Offline Posts: 1340 |
Post Options Quote Reply Posted: 05 Jan 08 at 10:07pm |
Yes, the crew does have to put it in, but when the pole is released it automatically drops the guy, which is less faffing around for the gybes and drops. I think you would need to look at a fork end with an appropriate piece of rope, it doesn't (in my experience) require any manipulation to remove the guy from the pole, but equally when the pole is launched the forces hold it in place.
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Ex-Finn GBR533 "Pie Hard"
Ex-National 12 3253 "Seawitch" Ex-National 12 2961 "Curved Air" Ex-Mirror 59096 "Voodoo Chile" |
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Post Options Quote Reply Posted: 06 Jan 08 at 12:06pm |
Here's pic, Description says "Atlantic dead before the wind spinnaker set August1916" is the spinny the thing sticking out on the left??? or the one on the front?? I dunno
Edited by GK.LaserII |
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JimC
Really should get out more Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6649 |
Post Options Quote Reply Posted: 06 Jan 08 at 12:56pm |
The spinnaker is the one on the pole out to starboard. The pother is probably a balloon jib I guess. In those days the spinaker was set to windward of the jibs, not to leeward. The reason for that escapes me!
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landlocked
Far too distracted from work Joined: 06 Oct 06 Location: United Kingdom Online Status: Offline Posts: 222 |
Post Options Quote Reply Posted: 06 Jan 08 at 9:32pm |
the description says that the boat is dead before the win ie dead run so it's just like goosewinging the jib surely?
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Cherub 2535 "Eggbert the Nasty" Soon to be for sale PM for Details
Cherub 2657 "Slippery When Wet" Don't sail fly Cherub |
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