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Skiffman View Drop Down
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Post Options Post Options   Quote Skiffman Quote  Post ReplyReply Direct Link To This Post Topic: L4000 / 29er ratings
    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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Post Options Post Options   Quote squeek Quote  Post ReplyReply Direct Link To This Post Posted: 14 May 05 at 11:04pm
if u can bear away down the wave ur fine....if not ur f**ked!! 9er bows are a pain in the ass thou they just dont  get out the water
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Yann View Drop Down
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Post Options Post Options   Quote Yann Quote  Post ReplyReply Direct Link To This Post Posted: 14 May 05 at 8:17pm
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)


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redback View Drop Down
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Post Options Post Options   Quote redback Quote  Post ReplyReply Direct Link To This Post Posted: 14 May 05 at 8:17pm
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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Post Options Post Options   Quote squeek Quote  Post ReplyReply Direct Link To This Post Posted: 14 May 05 at 11:46am
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 .......well unless of coures u stack it and your helm dies
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Post Options Post Options   Quote Yann Quote  Post ReplyReply Direct Link To This Post Posted: 14 May 05 at 10:19am
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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Post Options Post Options   Quote redback Quote  Post ReplyReply Direct Link To This Post Posted: 14 May 05 at 10:08am

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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Post Options Post Options   Quote Wave Rider Quote  Post ReplyReply Direct Link To This Post Posted: 13 May 05 at 8:22pm

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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Post Options Post Options   Quote squeek Quote  Post ReplyReply Direct Link To This Post Posted: 13 May 05 at 6:49pm
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 View Drop Down
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Post Options Post Options   Quote Phil eltringham Quote  Post ReplyReply Direct Link To This Post Posted: 13 May 05 at 6:34pm

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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