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Harness line position 1/3 rule

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Created by Francone > 9 months ago, 1 Jul 2010
swoosh
QLD, 1926 posts
1 Jul 2010 11:21PM
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mkseven said...
im not assuming no, and you could easily rephrase what you said originally that barn is the best sailor here yet im guessing you havent sailed with the majority.


Maybe I should have said, if you want to be able to sail like this:

listen to barn.

If you look at cribbs articles he checks out the rigs of a few top sailors including JP, etc and they all run setups which match his advice.

mkseven said...
Barn is a better sailor- i'll back what (whom you believe) the better sailor says tends to indicate sheep.

Given the choice, I'd rather listen to a better sailer, and be a sheep, than be a stubborn idiot who ignores good advice.

mkseven said...
We are not talking massive movements in rig here- you get pulled out of shape by the gust you dont yank or muscle the sail back in, but gradual sheeting in trying to keep the sail relatively still.

Not talking huge imbalances, my harness lines are typically something like half a cm to a cm from dead neutral. Requires just a light touch from the front hand to keep everything in check.

mkseven
QLD, 2314 posts
1 Jul 2010 11:43PM
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swoosh we are essentially talking about the same thing- if you care to go back through anything I wrote and disprove it or convince me otherwise then i'll listen. I never once said my way is best. If you notice there are all the slalom sailors saying neutral, all the wave/freestylers facing slightly front hand (again what happens when the draft typically moves back in a wavesail?).

No one is favouring back hand but again stance makes a big change also- you can set your lines so that it has backhand pressure- then swing forward and around the front foot and the pressure goes neutral (probably the most harness commited stance you can get).

Back to the original post- how can cribby's setup be exact when sail designers set the draft for different points with different sails? 1/3 is just an average but it is then to be fine tuned TO PERSONAL TASTE.

Besides what are you wavesailors/freestylers even doing using harness lines anyway [}:)]

Gestalt
QLD, 14393 posts
1 Jul 2010 11:47PM
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mkseven said...


Peter Hart, cribby etc- these guys are hardly the best sailors yet they can probably tell you more about peoples (even pro's) stance than what the person sails it can.



you do realise mk that cribby says to sail front hand bias.

mkseven
QLD, 2314 posts
1 Jul 2010 11:56PM
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yer mate I know, I have tried his setup on race sails- couldnt stand it- again look at the gear cribby is using for the setup.

Wavesails I never found so important- but then i'm not really focused on sailing long time in the harness then- focus more on jumping and crashing

Cribby is probably trying to stop the spinout epidemic- sailors new to the sport tend to sail a bit more back hand biased, they sheet in, put pressure through back foot and spinout.

I watched that vid of barn- not much in harness action goin on there.

Once again- draft moves more in wave and freeride sails so you should place lines that little bit further back. If you want to call it making the most of the sail in the gust then so be it. Further alot of wave and freestyle sailors are in the harness to get back upwind on which point of sail the pressure is further back in the sail. Tho I'm a bit like mark aus (I think it was) and like to open a wavesail up a bit for going upwind.

racerX
459 posts
1 Jul 2010 10:01PM
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I did a random sample from a few issues of boards and windsurf mags were you could take a useful measurement of the harness lines, most of them were close to 1/3 position.

But I think the beauty is the consistency you get from this method. i.e. if you want it more forward measure a 1/3 plus an inch or whatever etc.

I also prefer slightly front hand bias as well, as seem to sail much better that way.

mkseven
QLD, 2314 posts
2 Jul 2010 12:17AM
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oh and if what good sailor says goes, i'll take your barn and raise it an antoine whom favours a little bit of back hand pressure so we're all wrong

Reflex Films
WA, 1445 posts
2 Jul 2010 11:02AM
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some great moves in that video!! Loved it.

which harness line position and length has ABSOLUTELY NOTHING to do with.

as the sailors are not hooked in when the moves are going down.

The wind at Jerri is pretty steady - so no need to try and second guess what the wind is doing...

Each to their own with harness line position - having ridden with and filmed the best sailors in the world (Especially from Helis - where you can rally see the set up)- the majority are riding neutrally balanced set ups.





evlPanda
NSW, 9202 posts
2 Jul 2010 3:29PM
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But should we setup like pros? We are not pros.

Meh, I just place them where it looks like the draft in the sail should be on land, then fine-tune on water until they are balanced for the median wind speed.

Personal preference may see you adjust otherwise. If you are learning to get in the straps you may want to have them slightly forward (1cm), if you are looking at clocking a max GPS speed you may want to have them slightly back to make the most out of the gusts.

I dunno, feel free to correct me.

swoosh
QLD, 1926 posts
2 Jul 2010 3:48PM
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I usually set my harness lines for trolling. This gives the maximum amount of LULZ


p.s. yes we should set gear up like pro's. afterall gear is designed around testing feedback from pro's, so rigging otherwise would in most cases give less than optimum results.

barn
WA, 2960 posts
2 Jul 2010 1:57PM
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i think the majority of the windsurfing communities idea of 'balanced lines' are in fact still to far forward. It is possible to sail no hands on a windsurfer, and it gets easier the FURTHER forward the lines get, it makes sailing with bad technique manageable. but this is not fast or efficient.

hence the scientific term "sailing like a girl" which is the same as other scientifically valid terms such as "throwing like a girl" and "running like a girl".. nothing to be ashamed of but there is room for improvement.

I know 1st hand from working in the instruction/rental industry that 90% of the public sail with their lines way to far forward. Every time I jump on someones Gear i have to move the lines back!

And i would bet good money that antoine would move the lines back as well.

Cribby is right, Its worth listening to advice from professional instructors, and hes the best instructor Ive seen. and he changes thru the nose because hes the best. (one of his billionaire clients turned up in a power yacht for some intuition, so most can afford it.)






this is what Im talking about, Its the first photo i found on gaastra.com.. finn is less skilled than antoine but it must be noted that these guys are sailing way more powered that the average joe.

so if antoine says back hand pressure he is a freak anyway with arms like Godzilla and shouldn't be listened to for advice.

yes im not using my harness in the video, but i am flying going into those move and thats all down to stance and setup.. the faster u go into move the fast you come out.




KenHo
NSW, 1353 posts
2 Jul 2010 3:59PM
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I agree about rigging like pros. Small tweaks are not the same as rigging differently.
After watching the video of barn and reading the post above, I'm more frustrated than ever about the lack of tuition for windsurfing in Australia.
I have to realise that I have probably been using hopeless technique and set-up forever.


swoosh said...

I usually set my harness lines for trolling. This gives the maximum amount of LULZ


p.s. yes we should set gear up like pro's. afterall gear is designed around testing feedback from pro's, so rigging otherwise would in most cases give less than optimum results.


barn
WA, 2960 posts
2 Jul 2010 2:02PM
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and another thing, everyones harness lines are to short



choco
SA, 4032 posts
2 Jul 2010 3:45PM
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barn said...

and another thing, everyones harness lines are to short





I was just about to say the same thing i've gone to longer lines approx 30cm for GPS sailing and with a couple of other small tweaks have now found an extra gear.

Windxtasy
WA, 4014 posts
2 Jul 2010 2:21PM
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Now I'm more confused than ever.
There is never any one right way, but
for those of you who do not use the 1/3 rule, how do you decide where to put the harness lines?
Do you
a) stand the sail up on the beach and feel where it seems balanced,
b) whack them anywhere and go for a sail and then adjust,
c) look for where the max draft is and put them there
d) something completely different?

sboardcrazy
NSW, 8014 posts
2 Jul 2010 4:29PM
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Windxtasy said...

Now I'm more confused than ever.
There is never any one right way, but
for those of you who do not use the 1/3 rule, how do you decide where to put the harness lines?
Do you
a) stand the sail up on the beach and feel where it seems balanced,
b) whack them anywhere and go for a sail and then adjust,
c) look for where the max draft is and put them there
d) something completely different?


Yeah .. I used Guy Cribbs estimation for a while until i got new booms and started to rig somewhere where I could set up land and get wind in the rig to test for the balance point.Now i think Im back where I used to be..I found GCribbs possy took a while to get used to but it does keep the rig more upright as its harder to oversheet & pull it over the top of yourself..a survival habit I had left over from the 80's..Ill have to start resetting at Cribbys 1/3rd but maybe Ill whimp & wait till summer with its even winds and warm water..

Windxtasy
WA, 4014 posts
2 Jul 2010 2:34PM
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swoosh said...


Maybe I should have said, if you want to be able to sail like this:

listen to barn.




I would LOVE to be able to sail like that.
The sad fact is it wouldn't matter where I put my harness lines that just ain't gonna happen!

izaak
TAS, 1973 posts
2 Jul 2010 5:09PM
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well thats the best vid ive seen!

windsufering
VIC, 1124 posts
2 Jul 2010 5:11PM
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i will speak to the pros about harness lines and see what possi they like

Gestalt
QLD, 14393 posts
2 Jul 2010 5:30PM
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i think one of the important things here is how far apart you set your lines.

the closer together they are the more back they go and the more having slight front hand pressure feels good.

setting your lines far apart tends to disguise the best place to set the lines and makes back hand pressure feel better.

sboardcrazy
NSW, 8014 posts
2 Jul 2010 5:34PM
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Gestalt said...

i think one of the important things here is how far apart you set your lines.

the closer together they are the more back they go and the more having slight front hand pressure feels good.

setting your lines far apart tends to disguise the best place to set the lines and makes back hand pressure feel better.



I was setting mine close together but then bought a set of 28inch lines which feel a bit long so now they are further apart to soak up some of the length..it probably helps with gusty conditions too..?

Gestalt
QLD, 14393 posts
2 Jul 2010 5:52PM
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sboardcrazy said...

Gestalt said...

i think one of the important things here is how far apart you set your lines.

the closer together they are the more back they go and the more having slight front hand pressure feels good.

setting your lines far apart tends to disguise the best place to set the lines and makes back hand pressure feel better.



I was setting mine close together but then bought a set of 28inch lines which feel a bit long so now they are further apart to soak up some of the length..it probably helps with gusty conditions too..?


like the guys above i use long lines and hgher boom. at first it does feel long but for me it means i get my weight off the board so i can plane earlier and use smaller sail and fins.

in overpowered conditions on cambered sails i tend to spread them further apart to gain control of the rig.

mkseven
QLD, 2314 posts
2 Jul 2010 6:29PM
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I agree with barn about line length.

Gestie- I dunno, I set my wavesails with lines together and my racesails pretty much identical spacing to what finian has there (about 1 hand spacing apart). 28 lines should be perfect for you when placed together, it's just TOW getting used to longer lines and adjusting stance to make use of longer lines.

I sail no hands all the time, it promotes trim balance and correct stance. Wouldnt say it makes me slow.

I agree with what you are saying Barn about peoples lines being too far forward, but I was never talking about that. Balanced lines are balanced, not so you have back hand pressure.

Windxtasy start with 1/3 rule then move lines back if backhand pressure and forward if front hand. The closer you have your lines the more rotational the sail becomes so you need to balance that also.

Aside from that enough has been said from me

Gestalt
QLD, 14393 posts
2 Jul 2010 6:43PM
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yes, i like 28 also.

NotWal
QLD, 7428 posts
2 Jul 2010 6:56PM
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Windxtasy said...

swoosh said...


Maybe I should have said, if you want to be able to sail like this:
...
listen to barn.




I would LOVE to be able to sail like that.
The sad fact is it wouldn't matter where I put my harness lines that just ain't gonna happen!


That's because you sail like a girl

Mrgob
116 posts
2 Jul 2010 6:00PM
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If you're not a pro, or not competing in the beach pecking order, what does it matter how you set your lines provided you are satisfied with a good planing bump and jump session.

Anyway, my wetsuit isn't the latest fastest colour, so I have a reasonable excuse!

Windxtasy
WA, 4014 posts
2 Jul 2010 6:16PM
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NotWal said...

Windxtasy said...

swoosh said...


Maybe I should have said, if you want to be able to sail like this:
...
listen to barn.




I would LOVE to be able to sail like that.
The sad fact is it wouldn't matter where I put my harness lines that just ain't gonna happen!


That's because you sail like a girl


and I always will...

funny about that.

racerX
459 posts
2 Jul 2010 8:44PM
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yabadabadoo I think you're over simplifying something that is rather complex... While the 1/3 rule works for me, I appreciate it is not actually perfect, I just like it for consistency.

Something to consider is I believe it is impossible to have the harness lines perfectly in the middle for all loads as the sail is not connected at the mean aerodynamic center of the sail, but instead it is connected to the mast at the front, which provides a rotational moment on the sail.

You can only have it perfectly balanced for 1 load. My understanding is the mean aerodynamic center (MAC) is actually 1/4 along the chord of the sail.


choco
SA, 4032 posts
2 Jul 2010 10:26PM
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yabadabadoo said...

ok barn im on your side to some extent. Nearly always i get on someone elses kit who is an intermediate or more occasional level sailor the lines are too far forward . They nearly always need moving back.

However what about this?

on a beam reach burning along at 20 knots with 20 knots wind blowing perfectly set up and trimmed.

apparent wind is thus 45 degrees from bow.

there is a gust rise of 10 knots taking the true wind to 30 knots,
if nothing else changes then the apparent wind swings aft to 56 degrees from the bow.

Thus you should be sheeting out to stay properly trimmed, sheeting back in again as you accelerate and possibly sheeting in harder again as you go faster and the gust dies away(thus apparent swings forward of 45 degrees). Practically we do all this anyway, its the very essence of windsurfing. you do it a lot- and i bet you sail with lines close together to. Lines close together are good because it makes it really easy to make all these adjustments continuously



Or you can stay sheeted in and let the rig bend and absorb the gust that way, this may or may not be better but will depend on the rig, the stiffness of the mast, your bodyweight etc.

or its a combination of all these things.


whats sailing like this do for all the harness line theories?

NotWal
QLD, 7428 posts
2 Jul 2010 11:17PM
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I think that using the uphaul like that is just a way of getting further outboard away from the rig.
I don't think there is a lot of tension in it. Its doing the same job that your front hand does.

Mark _australia
WA, 22337 posts
2 Jul 2010 9:38PM
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Timmaaayy!!!



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"Harness line position 1/3 rule" started by Francone