Fin slippage

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Ellobuddha
Ellobuddha
NSW
625 posts
NSW, 625 posts
30 Nov 2009 7:32pm
Was out today on Supersports 109 with 37 SS fin and a NP 5.9 Excess in about 20-25knots Southerly.

Have had fin slippage when it break out whilst going over top of chop before and have managed to regain traction by pointing the board downwind. Traction normally coming back very quickly.

However- today I spun it out and must have gone at least 30-40 metres out of control. Tried to straighten board downwind but no good. It wouldnt bite. Ended up sliding sideways and having a fairly big "off"

Any suggestions as best way to regain fin control from what Im presently doing? Im pretty keen to not get so out of control. I understand I should probably not load up on the back foot so much over the chop but it was one of those gusty days and was trying to make ground upwind.

Any advice appreciated. Cheers, EB
RumChaser
RumChaser
TAS
633 posts
TAS, 633 posts
30 Nov 2009 7:54pm
I spin-out more often than I'd like but it's usually trying to push too hard just as I'm going over the top of a wave. To correct it I put my back foot on the opposite rail and turn as if I'm going to gybe. It usually comes good fairly quickly. Just as a suggestion, if you normally have no problem with correcting this and this time you did, you didn't pick up some weed on your fin this time? May be why it wouldn't correct itself.
nick0
nick0
NSW
510 posts
NSW, 510 posts
30 Nov 2009 10:07pm
because my board is quite light and rather small .. i can just pull my back foot into my arse and it will usualy grip up again .. useing both feet ..:
also if not fully gone and only sucking a tiny amout of air/u can see tiny air buble coming out the back but still tracking in a forward motion ... i almost chophop and land tail first .....this land the fin into a new solid piece of water ...and of i go
FormulaNova
FormulaNova
WA
15105 posts
WA, 15105 posts
30 Nov 2009 8:05pm
nick0 said...

because my board is quite light and rather small .. i can just pull my back foot into my arse and it will usualy grip up again .. useing both feet ..:
also if not fully gone and only sucking a tiny amout of air/u can see tiny air buble coming out the back but still tracking in a forward motion ... i almost chophop and land tail first .....this land the fin into a new solid piece of water ...and of i go


Yep, I'd agree. Pulling your backfoot around inline with your backside and leaning forward is a gutsy thing to do sometimes but usually succeeds in realigning the water flow on the fin and once you've done that, and its settled, you can put more pressure on the fin again.

Make sure you are really secure in your footstraps before you do it though as its a great way to catapult if you haven't.

Pulling the back foot around under you is a bit harder on a bigger board but works the same.

Mark _australia
Mark _australia
WA
23688 posts
WA, 23688 posts
30 Nov 2009 8:20pm
Every spinout is different but I usually find standing on the tail to slow it down and then trying to regain control by bearing away is the go
sboardcrazy
sboardcrazy
NSW
8349 posts
NSW, 8349 posts
30 Nov 2009 11:26pm
Ellobuddha said...

Was out today on Supersports 109 with 37 SS fin and a NP 5.9 Excess in about 20-25knots Southerly.

Have had fin slippage when it break out whilst going over top of chop before and have managed to regain traction by pointing the board downwind. Traction normally coming back very quickly.

However- today I spun it out and must have gone at least 30-40 metres out of control. Tried to straighten board downwind but no good. It wouldnt bite. Ended up sliding sideways and having a fairly big "off"

Any suggestions as best way to regain fin control from what Im presently doing? Im pretty keen to not get so out of control. I understand I should probably not load up on the back foot so much over the chop but it was one of those gusty days and was trying to make ground upwind.

Any advice appreciated. Cheers, EB


I've had that happen quite a bit..I eventually get it back under control but Ive found I have to power off & then go downwind which seems to be against everyone elses advice.
Gestalt
Gestalt
QLD
14968 posts
QLD, 14968 posts
30 Nov 2009 11:07pm
+3 to pulling your back foot in under your bum, i also hang off my rig more.
sausage
sausage
QLD
4874 posts
QLD, 4874 posts
30 Nov 2009 11:14pm
Once you get the board sliding back in a forward direction by throwing rig forward and upright, I give the board a big leeward twist using ankle / foot pressure - this seems to immediately release the air pocket surrounding fin. Just don't dig the leeward rail in when the board is still sliding sideways as this usually ends in disaster (leeward rail catches and over you go)

Sometimes I'll also see how far and how fast I can go whilst sliding the tail - takes some effort but lots of fun (that is until leeward rail catches- see point no. 1 above.)
NotWal
NotWal
QLD
7436 posts
QLD, 7436 posts
30 Nov 2009 11:26pm
4 is it for tug the back foot in hard with heaps of pressure on the mast foot.

For bigger boards that slide and slide if you take your front foot out and stamp hard just behind the mast foot that will correct it. Its pretty awkward to do when you're sliding but it works.
Windxtasy
Windxtasy
WA
4019 posts
WA, 4019 posts
30 Nov 2009 9:47pm
NotWal said...

4 is it for tug the back foot in hard with heaps of pressure on the mast foot.



I agree with them.
Instant correction of spinout.
I don't alter the rig at all, just pull the tail of the board back under me.
and afterwards, less sideways pressure on the fin to prevent it happening again.
Ellobuddha
Ellobuddha
NSW
625 posts
NSW, 625 posts
1 Dec 2009 10:29am
Thanks guys,

I think I do pull my back foot in a bit without realising it and bear off as well, but probably not enough. Ill give it another go. Not a constant problem but the slide out yesterday was bizzare, there was no way it wanted to come back, must have looked like a truck sliding sideways on ice.

Thanks again.
sboardcrazy
sboardcrazy
NSW
8349 posts
NSW, 8349 posts
1 Dec 2009 11:51am
Windxtasy said...

NotWal said...

4 is it for tug the back foot in hard with heaps of pressure on the mast foot.



I agree with them.
Instant correction of spinout.
I don't alter the rig at all, just pull the tail of the board back under me.
and afterwards, less sideways pressure on the fin to prevent it happening again.

I find I don't have the strength or energy to do that..?

NowindSurfer
NowindSurfer
WA
163 posts
WA, 163 posts
1 Dec 2009 11:29am
i find i spin out when i am using a wave freestyle sail on ma waveboard.
everytime i bring the sail down towards the bottom of the footstraps i loose the tail,
i eventually sussed it out and now i can tailslide and bring it back in on the plain as like a trick.
when landing it happens aswell have to land with sail slightly forward.
to prevent this dishwashing skateboard action dont bring the sail paralell to the back board or get a bigger fin (looks like your one is is alread quite large try a board with a rail edge e.g slalom board mabe
mabe there is alot of weed in the area aswell
Gorgo
Gorgo
VIC
5124 posts
VIC, 5124 posts
1 Dec 2009 3:26pm
Spin-out is caused by stalling the fin. The most common cause of that is too much sideways pressure on the fin from the back foot.

The solution is to press down more with your back foot rather than push sideways with your leg. In the extreme you can bend your back leg a little and ride more on top of the fin.

You can also get it by slipping a little as you come off some chop and coming down a little sideways. As has been previously said, suck the chop up with your knees so you don't get flicked off the chop. Pull the tail of the board around towards your bum so you land with the fin heading straight. It's also way more cool. You're doing a nice little planing chop hop instead of a get flicked into the air slide out sploosh.
MikeyS
MikeyS
VIC
1509 posts
VIC, 1509 posts
1 Dec 2009 6:35pm
Gorgo said...


The solution is to press down more with your back foot rather than push sideways with your leg. In the extreme you can bend your back leg a little and ride more on top of the fin.

You can also get it by slipping a little as you come off some chop and coming down a little sideways. As has been previously said, suck the chop up with your knees so you don't get flicked off the chop. Pull the tail of the board around towards your bum so you land with the fin heading straight. It's also way more cool. You're doing a nice little planing chop hop instead of a get flicked into the air slide out sploosh.

Yep- concentrate on pushing that fin down down down to the bottom of the ocean. Ride that sucker DOWN!

Especially if you're trying to get upwind there is a tendency to try to push sideways with your foot. What you want to try to achieve is to put more pressure on the ball of your foot and to try to angle the board so that the leeward rail is lower in the water. You are then getting more upwind lift by driving off the fin, rather than trying to push it away from you.

Also, crank on a bit more downhaul. It should make the fin feel smaller (try it - you might be surprised).

Mike105
Mike105
59 posts
59 posts
1 Dec 2009 4:42pm
I may not have this quite right, but here are a few things I think have reduced my spin outs (which a year or so back were pretty frequent):

The main point that really makes a difference is if you are spinning out a lot check your harness lines aren't too far forward. Extra load on the back hand causes a natural increase in pressure on the back foot. I think this is also a symptom on those days where you just can't pull it back in after spinning out.

If powering upwind, either pick a path around the bigger chop as if you spin out you loose all the gains made up wind in a few seconds of sliding. For medium bits of chop, take weight off your feet, put all your weight on the boom and bend the knees as you go over to keep from jumping, then power up again.

Also, spend some time in flat water and small chop deliberately loading up the fin and trying to spin out. After a while you can feel the early slippage and react quickly enough so you don't loose it.

Hope that helps.


Krisiz1
Krisiz1
WA
331 posts
WA, 331 posts
1 Dec 2009 8:09pm
It is wise to check the condition of the fin too. I find a new fin hangs on well but it only takes a few rubs on the bottom to create a flat spot which seems to make them let go more often. I sail with a 24cm Select Weedy most of the time with a 5.7 sail. I agree with the comments about harness postion, neutral or even a little front hand heavy.
NotWal
NotWal
QLD
7436 posts
QLD, 7436 posts
1 Dec 2009 10:21pm
Dr Beat demonstrates deliberate "spinouting" on his Windsurfing Kamasutra vid.
He's ripping down a speed strip at a modest pace and he jumps the fin out and sideways and puts it down at an angle to his direction of travel. He just keeps on going semi sideways. Then he pulls it in line.

There's another fun thing to do with your windsurfer. Will it ever end?
Obelix
Obelix
WA
1173 posts
WA, 1173 posts
1 Dec 2009 8:41pm
Woud a larger fin help or cause more trouble?
Sailhack
Sailhack
VIC
5000 posts
VIC, 5000 posts
2 Dec 2009 9:58am
Obelix said...

Woud a larger fin help or cause more trouble?


I used to get sliding with my 52cm fin, so I don't reckon it has much to do with the fin length...moreso stance as mentioned, harness line location (if I'm sliding, I move mine back a touch) & boom height/weight transfer.
gregwed
gregwed
QLD
556 posts
QLD, 556 posts
2 Dec 2009 2:34pm
Been trying out new board last two days in 20kts SE. 1st day had heaps of problems with fin spinouts, then today I adjusted the harness lines so more evenly balanced and no probs at all. So at this stage I am convinced it relates to the harness unless it redevelops. I didn't even take the fin out so no change there.
Thanks to the posts on this site to get me focussed.
Cheers!!
Windxtasy
Windxtasy
WA
4019 posts
WA, 4019 posts
2 Dec 2009 1:12pm
Obelix said...

Would a larger fin help or cause more trouble?


Larger fins help prevent spinout.
Fin shape is a big influence.
Spinout is much more likely on a wave fin than a pointer fin.
Board tail shape and rocker is also an influence.
I have never experienced spinout in years of sailing on my Vivace (except when airborne!). The board I had prior to that would spinout from time to time, and the boards I have been trialling recently spinout with too much fin pressure.
It's like getting into a skid in your car (pre ABS), once you know what to do you just correct automatically and it's only a minor hiccup, not a big deal.
Krisiz1
Krisiz1
WA
331 posts
WA, 331 posts
13 Dec 2009 6:13pm
Krisiz1 said...

It is wise to check the condition of the fin too. I find a new fin hangs on well but it only takes a few rubs on the bottom to create a flat spot which seems to make them let go more often. I sail with a 24cm Select Weedy most of the time with a 5.7 sail. I agree with the comments about harness postion, neutral or even a little front hand heavy.


Took my own advice. Felt I was having spinouts more regularly than I remember. Went down to a 23cm Choco weedy/freeride. Hangs on like glue.
knigit
knigit
WA
319 posts
WA, 319 posts
13 Dec 2009 9:36pm
Yep, pull with back foot.

If ur normally ok at getting it back under control it's quite likley that there was little bit of weed around it which politely came off after u'd crashed.
Lessacher
Lessacher
89 posts
89 posts
16 Dec 2009 3:55am
I found 34 points, what a windsurfer can do, when he got a spin out. I find, to write,make that or that, may sometimes help, but when I have a great catapult,
thats in my head for a long time. So it was for me the time to work fins without
spin outs. 20 years, i tried and tried. Result are doubleasymm.fins for both tacks,
at the base with a cut out, I work in 100% carbon. I try that what i worked in Strand Horst (Netherland.) 165km from there where I life . Shallow water and weed let you learn to work good weedfins, doubleasymm . concaves, cut out at the base. No spin outs. This system is good for all fins.Wave, slalom,freeride and
Speed. The speeder dont love weedfins. Angle of weedfins should be 45°. But I
tried 30°. Upwind very good, downwind very fast. Thomas Döblin made topspeed
with 50 knots. He used the first time the 22cm fin, she is 28cm long. With speed is
weed no problem, but it are 30°. I work the concaves diagonal. On both sides
it does not work. So on the left side ,from the base to the half,on the other side
from the half to the top . (Diagonal.) Concaves are behind the thickest point of
profile. It works leewards the half concave, the other half works on the way back.But the half concave for the way back reduce the vacuum on the other side.Faster, no spin outs. The concaves work at the base not so good how on the tip. So I reduce the concave at the tip 5%. Thats for both tacks okay. Thomas used a reduced right fin from left to right. But it should be better to have a fin from left to right,where the concave is leewards at the tip. Concaves work in deeper water better. I worked such a fin for him for 100 km/h. Now its winter here. Time to try new things. Thomas wait for wind, no time to think what is spin out. Wolfgang
windtechno
windtechno
VIC
372 posts
VIC, 372 posts
16 Dec 2009 12:21pm
well in japan its called drifting and it is now a sport. you can make big money off drifting GTRs, GTSs and toyota sprinters. the guys in japan love spinning out i heard they like there windsurfing too
Bertie
Bertie
NSW
1351 posts
NSW, 1351 posts
16 Dec 2009 1:30pm
move ya harness lines back further. will stop you loading up the rear leg so much, hence less spinout.

i was using the SS109 last year with a 7.2 race sail with a 36 cm ss fin and never spun out. you are using too big a fin for that sail and doing some stuff wrong.
theWaterBoy
theWaterBoy
WA
225 posts
WA, 225 posts
16 Dec 2009 11:50am
I cant remember which post it was but someone posted this great series of tips here : www.guycribb.com/windsurfing_technique_holiday_DVD_0076v01.htm

I only have old gear and one fin so have to live with what I have got for all conditions.

I found the lessons on book height and harnless lines in particular very useful.

In essence, raising your book and setting your back harness line at 1/3 of the length of your boomm the front one 1 hand or so in front of that has virtually eliminated spinout for me.

Also, not leaning back and trying to close the gap but getting on your toes and pelvic thrusting sic "as if your rig were kylie minogue" .

But, thats just me...
Ellobuddha
Ellobuddha
NSW
625 posts
NSW, 625 posts
17 Dec 2009 9:46am
Bertie said...

move ya harness lines back further. will stop you loading up the rear leg so much, hence less spinout.

i was using the SS109 last year with a 7.2 race sail with a 36 cm ss fin and never spun out. you are using too big a fin for that sail and doing some stuff wrong.


Any fin size suggestions for a 5.9 sail then? I thought it would have been ok...
Squid Lips
Squid Lips
WA
708 posts
WA, 708 posts
17 Dec 2009 12:00pm
windtechno said...

well in japan its called drifting and it is now a sport. you can make big money off drifting GTRs, GTSs and toyota sprinters. the guys in japan love spinning out i heard they like there windsurfing too


Spinout is more like understeer, not cool
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