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 |
L4000 / 29er ratings |
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Skiffman ![]() Far too distracted from work ![]() ![]() Joined: 27 May 04 Location: United Kingdom Online Status: Offline Posts: 291 |
![]() ![]() ![]() ![]() Posted: 15 May 05 at 2:05pm |
It happens in most modern skiffs that don't have smaller rigs when it gets windier. The 29er's kite starts collapsing in about 25knots, its because the drag on the sails and boat stop it accelerating as Yann said so the apprent wind moves closer to the true wind angle. This is why the main loads up and then kite collapses behind the main. There is a trick to keep the kite set in 29ers but does require good teamwork as if you start doing it too much the rudder starts to cavitate from an increase in the angle of attack and the crew has to flog the kite very quickly to regain control.
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squeek ![]() Groupie ![]() ![]() Joined: 17 Dec 04 Location: United Kingdom Online Status: Offline Posts: 43 |
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if u can bear away down the wave ur fine....if not ur f**ked!!
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Yann ![]() Newbie ![]() ![]() Joined: 24 Jan 05 Location: United Kingdom Online Status: Offline Posts: 28 |
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yeah but it really doesnt happen like that, when it gets to above 25kts
ish (depending on boat) you can struggle to hold enough power to make
it accelerate enough to make the apparent wind stay forward. like a 5kt
gust hits and your boat doesnt accelerate anywhere near 5 knots so the
apparent drops back again.
my experiance of it was in 29ers and theres nothing we found to do about it. just watch it flap once in the big gust and try to keep it upright and get it going again. ive heard it happens most assymetrics in enough breeze. (im not trying to say it happens often but it certainly can do) Edited by Yann |
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redback ![]() Really should get out more ![]() ![]() Joined: 16 Mar 04 Location: Tunbridge Wells Online Status: Offline Posts: 1502 |
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Yes, I'm not sure what Yann is talking about. It's certainly no problem at 30Knots true wind, I recall going down lake Garda at about a Kilometer every 2 minutes and feeling exilerated but perfectly in control. The gybes were a bit exciting, but manageable, the drops, the hoists and the tacks were a bit hit and miss though.
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squeek ![]() Groupie ![]() ![]() Joined: 17 Dec 04 Location: United Kingdom Online Status: Offline Posts: 43 |
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when does dat happen?? apparent wind just shift wind angel foreward
more and more and more as you go faster and faster and faster. n
when by the true wind ahgle u shud be on the other tack.... now dats
fast n fun
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Yann ![]() Newbie ![]() ![]() Joined: 24 Jan 05 Location: United Kingdom Online Status: Offline Posts: 28 |
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and then the next big gust hits and you realise you dont have enough
weight to push the tiller to stop the kite collapsing from the back
because your going too low..... now THATS fun.
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redback ![]() Really should get out more ![]() ![]() Joined: 16 Mar 04 Location: Tunbridge Wells Online Status: Offline Posts: 1502 |
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What the modern skiff type boats do have is a modern rig. Their adjustability is a revelation (but then I used to sail a Laser). Its quite possible to make my boat feel underpowered in 20Knots and yet fully powered in 8. The hulls too contribute to the ability of the boats in high winds. Mine does drag its bum in the light stuff but the minimal rocker, and slim waterline does mean that as the wind gets stronger it just goes faster, unlike the more conventional hulls which seem to have a speed barrier which they will not exceed. For those of you who haven't tried one consider this. You put the kite up and being a big kite they really go very fast. When you get hit by a gust you bear away and go faster still and if you get hit by another, stronger gust, you simply bear away a bit more and go even faster. It seems endless - the more wind the faster and deeper you go. The only snag is the manouevers which can be tricky since you have a narrow hull and a big rig. |
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Wave Rider ![]() Really should get out more ![]() Joined: 27 Oct 04 Location: United Kingdom Online Status: Offline Posts: 909 |
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Yeah i dont think its fair too say all that daddy and mummy stuff about 29er sailors and the youth sailors because none of my family sail at all so all they are involved in is the dropping off and picking up. All the rest i have to do myself! I train I save all the possible money to keep the boat in racing condition I have to do all the maintenance I can never get a new sail etc by 'just asking daddy' , i have to save up for absolutely ages and do as amny jobs as possible and all my school work haves to be done in the week so i can sail at the weekend! So no if you talk to most of them, many youth sailors get far by not asking daddy but by working hard and have the detremination to keep gonig and do well ! |
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-[Franko]-
Chew Valley Lake Sailing Club RS600 933 |
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squeek ![]() Groupie ![]() ![]() Joined: 17 Dec 04 Location: United Kingdom Online Status: Offline Posts: 43 |
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neiowming- as in neiowm eg the sound a motor bike makes when it goes past you really fast......im not mad really
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Phil eltringham ![]() Really should get out more ![]() ![]() Joined: 16 Mar 04 Location: England/Hitchin Online Status: Offline Posts: 1105 |
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The arguments about skiffs not handling breeze are in actual fact a bit pointless, they are designed to be fully powered up at far lower windspeeds that boats like the 420 or fireball, and as a result seem overpowered in 30+ knots of breeze. As for pulling the cunningham on, its effect to flatten the main and let the upper leech blade off in the gusts actually makes the main more efficient in high winspeeds, where minimising drag created by sail camber is more important as a result of the high appearent windpeeds associated with planing to windward. |
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FLAT IS FAST!
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