| Laser 28 - Excellent example of this great design Hamble le rice |
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| Laser 140101 Tynemouth |
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| Rossiter Pintail Mortagne sur Gironde, near Bordeaux |
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List classes of boat for sale |
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 Topic: Spy photosPosted: 07 Apr 07 at 11:26am |
I dont know, it just seems to be all want want want these days! With the exception of a fully foiling 14 (which is being tried in some places), what else can really be done?? |
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JimC
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Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6662 |
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Posted: 07 Apr 07 at 12:04pm |
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I'd suggest that one thing that would be good are rigs that are just as effective for gust response and control as the twin spreader multiple wire skiff type rigs but have an awful lot less ironmongery... And no, I have no ideas about how to achieve it, but less weight and drag aloft would be a very good thing.
As a stupid idea, do both trapeze wires have to go to the hounds? Supposing you put a join in half way up? Appreciably less windage, but would it be too difficult to sail with? Would the crew rdrag the helm about and vice versa? |
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olly_love
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Joined: 18 Jan 05 Location: United Kingdom Online Status: Offline Posts: 1145 |
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Posted: 07 Apr 07 at 4:41pm |
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it wouldnt be very good in my oppion cause when i am helming i am moving in and out all the time and i would prob pull my crew in with me if he is right forward. and the rigs are fine atm. remembering that a 14 kite is now arround 35m2 plus. somthing like a cherub has a very small mast section however it carries alot less sail area. but i do agree that steel wires are a bit old fashion as rope can now replace them but for a windage increase. |
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TWO FRANK-Hunter Impala
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Isis
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Joined: 01 Sep 05 Online Status: Offline Posts: 2753 |
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Posted: 07 Apr 07 at 5:16pm |
Atum Bom is set up like that (though with a fairly short strop - 1.5-2ft?) and I seem to rememeber you could feel it tugging a little when the other person moved about. Im not sure if they are still using that setup but im sure will or lucy can tell you whether its actualy an issue or whether it was just me being retarded and a little rusty on the wire |
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49erGBR735HSC
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Joined: 30 Mar 05 Location: United Kingdom Online Status: Offline Posts: 1991 |
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Posted: 07 Apr 07 at 5:56pm |
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Quite a few of the Maxi Yachts such as "Mirabella V" are using unstayed rigs, although I'm not sure if it's a viable option for small crafts. The wire's etc allow for controlled flexibility so if you lose them, you lose the control. In theory you could have multiple sections with variable stiffness but would only be suitable for a set range of conditions. Alternatively internally in the mast you could engineer a stiffening device to enable adjustability but reckon you'd be hit with extra weight, and is the extra weight and engineering going to be worth the ammount of drag you lose from losing shrouds, etc? |
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olly_love
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Joined: 18 Jan 05 Location: United Kingdom Online Status: Offline Posts: 1145 |
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Posted: 07 Apr 07 at 6:09pm |
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mirabllla V has alot of rigging. it has to be there casue of the massive rig. i think the only maxi i can think of is the malteaise falcon that dosent use rigging.
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TWO FRANK-Hunter Impala
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49erGBR735HSC
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Joined: 30 Mar 05 Location: United Kingdom Online Status: Offline Posts: 1991 |
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Posted: 07 Apr 07 at 6:21pm |
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I haven't seen the boat myself but was told due to the construction of the mast using aero-space technology, it was unstayed as the mast was similar in construction to an aeroplane wing. I can see the theory behind it, and the information came from quite a reliable source, possibly they found out that they had to put stays on during the testing processes and possibly the information I was fed was based on the draft design, not final.
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olly_love
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Posted: 07 Apr 07 at 6:24pm |
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na she was always going to have rigging. it cant be changed just like that due to the structure of the boat. (sorry it is all one of our lectures goes on about cause he was part of the design and build) when they put the rigging on it and wound it all up the boat flexed like mad. but the rig hasnt come down atm. the rig is an areofoil shape and was made in two halves and in 5 or so sections then fastened together. |
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TWO FRANK-Hunter Impala
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Guest
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Joined: 21 May 04 Location: United Kingdom Online Status: Offline Posts: 0 |
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Posted: 07 Apr 07 at 6:31pm |
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The French did a AC boat with no stays Crazy Koyote 2 ... cant find a pic. They slammed the innovation with a bad rating so the French refused to race it... |
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49erGBR735HSC
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Joined: 30 Mar 05 Location: United Kingdom Online Status: Offline Posts: 1991 |
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Posted: 07 Apr 07 at 6:41pm |
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Sorry Olly, you're right then, I just had my composites lecturer go off on a tangent about unstayed masts one day and he was pretty sure about the boat having an unstayed mast, even after he was questioned about it and it has sort of stuck in my mind. He must have been getting confused between Maltese Falcon and Mirabella V although he did seem to argue the point a bit.
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