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Symmetric v Assymmeric Spinnakers |
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 Topic: Symmetric v Assymmeric SpinnakersPosted: 13 Aug 13 at 4:12pm |
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There's a heap of problems with a swing rig, not least the fact that the jib and kite might have more moment on the boom than the main - effectively sheeting in the main and making control impossible. I'm all for KISS myself, just use an RS100 pole (and possibly the kite too).
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iGRF
Really should get out more 
Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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Posted: 13 Aug 13 at 4:33pm |
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Well it got quite a deep bow, deeper than the angle a pole could swing in the narrow confines of that bow, short of a permanent T pole I can't think of another way to get the angle I'd need downwind.. 
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transient
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Joined: 21 Aug 12 Online Status: Offline Posts: 715 |
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Posted: 13 Aug 13 at 4:38pm |
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from my limited perspective, and I'll admit I haven't used one, the 200 srs looked to me the best attempt at making a square running assy. It had an extra pole for goosewinging the kite so that all of the sail was clear of the main and jib.The tweeker line allowed the halyard to pull from further up the mast whilst also allowing the kite head out further from the mast. Both aspects letting the kite work better in pushing mode.......I seem to remember reading somewhere that one of the reasons for banning it in the 200 SIs was that it wasn't in the true spirit of assy sailing.
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iGRF
Really should get out more
Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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Posted: 13 Aug 13 at 4:53pm |
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I imagine in a boat like a 200 it couldn't be sailed hot enough to out weigh soaking, fact is I have yet to sail that thing up there, it doesn't look to me like anything much other than a fast 'glider' sub planing shape so this could all be academic.
First I need to get my paws on it.. |
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2547
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Joined: 11 Aug 11 Online Status: Offline Posts: 1151 |
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Posted: 13 Aug 13 at 5:15pm |
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The SRS on the RS200 was excellent and faster VMG than sailing in assy mode in all but the strongest of winds because the 200 is quite under canvassed and as such does not generate much apparent to help it down a run. The builder really pushed through the ban as they really wanted to be on the 90s assy bandwagon and it makes crewing the boat much easier. Ultimately the members voted for it to be banned at opens. Assys only really make sense in fast, light boats that generate apparent wind allowing a good VMG. Assys on slow boats mean you spend a lot of time sailing away from where you want to go ... on a slow boat a sym kite is a better solution (or an RS400 wing wing type system)
Edited by 2547 - 13 Aug 13 at 5:16pm |
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RS400atC
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Joined: 04 Dec 08 Online Status: Offline Posts: 3011 |
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Posted: 13 Aug 13 at 5:41pm |
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If you want something about the size of an RS400, with a canting pole, just buy a 400! With the £5000 you've saved, you could reduce the all up weight a fair bit by adding a carbon boom, rudder, mast, etc etc Maybe a truly modern rig would be interesting? TBH it would be worth buying a 400 just as a benchmark. |
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iGRF
Really should get out more
Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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Posted: 13 Aug 13 at 6:31pm |
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Half the reason I'm looking at this is weight, we want something that the two of us can lift onto a trailer have you tried lifting an RS400 without a crane?
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i tick
Groupie 
Joined: 15 Jul 13 Location: Tunstead Milton Online Status: Offline Posts: 93 |
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Posted: 13 Aug 13 at 7:14pm |
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Oh, don't chop holes in it, we could stick a Tasar rig on it.................
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iGRF
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Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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Posted: 13 Aug 13 at 7:35pm |
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Tasars are quite light anyway aren't they, I saw one down the lake the other week and helped them onto the trailer when they came down to Hythe, weight isn't a problem when you have lakes and slipways to float the boat on and off a trailer, but beach sailing it's all about picking the bloody thing up and putting it physically on the trailer.
I won't be 'cutting' holes, the plan is to fit one of those Fireball style kite pipe things into it and to do it professionally, with a floor in the bow and those vents in the nose to clear any water that goes down the chute opening. |
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boatshed
Far too distracted from work 
Joined: 12 Apr 05 Online Status: Offline Posts: 457 |
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Posted: 13 Aug 13 at 8:34pm |
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Also, in the Uk a lot of sailing is done inland and often in shifty, lightish winds. A square running boat and deep by the lee Laser type boat will dispatch the run in sub planing conditions pretty efficiently. Trying to soak low in any asymmetric - fast or slow - is painful.
The boats that I see suffer on the dead runs are the stayed rig single handers. Canoes and Contenders and to some extent Solos ( but they have very floppy rigs). They can't get the boom out and don't have the extra sail area of a whopping great symmetric kite. So, the perfect boat for the UK with it's shifty, lightish summer winds is a single hander with a symmetric kite ! Joking aside, in around 8 knots + a quick asymm skiff will hammer any square running boat to the bottom mark. Even a Vortex can be quick. |
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Steve
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