| Re: Hull Design Philosophy
[Re: ]
#161452 11/26/08 05:44 AM 11/26/08 05:44 AM |
Joined: Jun 2001 Posts: 9,582 North-West Europe Wouter
Carpal Tunnel
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Carpal Tunnel
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Posts: 9,582 North-West Europe | But then if you fit T foils as they are currently being fitted (ie no control mechanisms) you are adding drag to all but the optimum case.
I feel the magnitude of this drag is negligiable. At least I never felt slower when I sailed on a boat fitted with these. I also believe that in ALL conditions, except the absolute extremes, that the boat is optimal when sitting perfectly on its intended waterline. You achieve this attitude by shifting your weight around I you angle your T-foils to that attitude then I don't see what they at large drawbacks to the design. You make it is out as if their is only attitude among many at which the T-foils are not a drag but I seriously doubt whether many different attitudes of the boat (hulls) are really used in real sailing anyway. I more strongly feel that lots of sailors dismiss the T-foil rudders on unfounded reasons. From my experience these things are really as good as sliced bread. Afterall, we can have similar arguments about fitted daggerboards or not. Still we all know that the advantages of having these far outweight the drawbacks in the way of performance. T-foils are the same way. Hell, even in lighter wind conditions the stabilizing of the rig (less swinging back and forth) could already be enough to ofset for the added drag. That is what John Pierce feels is the case and I can not find fault with that from my personal experience with T-foils. I say try them before you knock them and don't look at A-cats. There are more things they don't do but works really well on other designs nevertheless. Personally, I'm convinced in them enough to want to fit them to my own F16 when my budget allows that. I feel they will transform my Taipan F16, which has the least bow volume and freeboard of all F16's except Altered ! Wouter
Last edited by Wouter; 11/26/08 05:46 AM.
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
| | | Re: Hull Design Philosophy
[Re: ncik]
#161514 11/26/08 09:15 PM 11/26/08 09:15 PM |
Joined: Sep 2006 Posts: 586 Hobart, Tasmania, Oz. Dazz
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Joined: Sep 2006
Posts: 586 Hobart, Tasmania, Oz. | I found the tiger easy to get back onto. the capricorn is higher out of the water, I would imaging the viper being so similar would be about the same.
C2 AUS 222 by Goodall design "Darph Bobo"
| | | Re: Hull Design Philosophy
[Re: Rolf_Nilsen]
#161524 11/27/08 02:16 AM 11/27/08 02:16 AM |
Joined: Mar 2008 Posts: 201 Adelaide, South Australia simonp
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Joined: Mar 2008
Posts: 201 Adelaide, South Australia | After capsizing three times 2 weeks ago I learnt that lots of free board does have it's downside. It's bloody hard to get back on the boat. The stingray was lower in the water and narrower so i could put one hand on the hull and the other on the spinaker pole and push my self up over the mainbeam. That doesn't work on the blade. I had to swim around to the side of the hull, jump up to the trapeze handle and pull my self up from there, which i think is a slow and risky way to do it. (as I found out when the boat sailed away from me*). On my third attempt I thought about a rope ladder off the mainbeam, has anyone successfully tried this before?
* big thank you to the rescue boat who picked me up and quickly put me back on the boat
Simon BLADE F16 AUS405
| | | Re: Hull Design Philosophy
[Re: taipanfc]
#161548 11/27/08 10:34 AM 11/27/08 10:34 AM |
Joined: Jun 2004 Posts: 1,479 Thailand Buccaneer
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Posts: 1,479 Thailand | The Taipan? Never heard of such a thing but if the taipan is tough to re-board then the viper must be nearly impossible.;-)) You can set up a rope climbing ladder attached to the front beam with a bungee holding it under the tramp. Couple of boats in Singapore use this as some of the crews can be quite small and struggle at times getting up onto the Taipan.
"House prices have risen by nearly 25 percent over the past two years. Although speculative activity has increased in some areas, at a national level these price increases largely reflect strong economic fundamentals." – Ben Bernanke – 2005
| | | Re: Hull Design Philosophy
[Re: Rolf_Nilsen]
#161574 11/27/08 08:31 PM 11/27/08 08:31 PM | Scarecrow
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Unregistered | With all due respect Rolf, this does all impact on the hull design and is perfectly welcome. | | |
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