29 Jun 2006 08:53:40
Seki
BAck foot pressure

I was out last weekend blasting on my big equipement, and after couple of
rides, I notice that I had more pressure on my back foot, so I had couple of
spinouts because I couldnt compesate chop easaly.
I seems that everything was trimed just fine, I was in my footstraps, down
in harness, with my sail competely closed going prity fast, but I didnt find
that perfect balance.
So I started to move harness lines even it seems ok in my hands, and mast
foot as well, but it just didnt work.
I m not sure where did I went wrong, only thing I didnt try is outhall, it
was little bit loose but just enough to get the sail touch the boom, becuse
of low wind, but I think that it is OK for a full cam 8.5 sail (V8
streetracer).

Thanks for any advice!




29 Jun 2006 07:28:18
(PeteCresswell)
Re: BAck foot pressure

Per Seki:
> I had more pressure on my back foot, so I had couple of
>spinouts because I couldnt compesate chop easaly.

That happens to me when I don't have enough fin under the sail.
--
PeteCresswell


29 Jun 2006 14:15:00
Seki
Re: BAck foot pressure


"(PeteCresswell)" <[email protected] > wrote in message
news:[email protected]
> Per Seki:
> > I had more pressure on my back foot, so I had couple of
> >spinouts because I couldnt compesate chop easaly.
>
> That happens to me when I don't have enough fin under the sail.
> --
> PeteCresswell

Spinout or back foot pressure?
I think my fin is 46 cm for 8.5 sail, I think it is enough. I tried the 54
cm and it is definitely to big.




29 Jun 2006 05:54:40
kurt
Re: BAck foot pressure


Get an adjustable outhaul. More outhaul should effect the spinout
potential, no?



29 Jun 2006 14:56:50
Seki
Re: BAck foot pressure


"kurt" <[email protected] > wrote in message
news:[email protected]
>
> Get an adjustable outhaul. More outhaul should effect the spinout
> potential, no?
>
So you think the problem from the title was the result of not enough
outhall?




29 Jun 2006 07:06:41
Re: BAck foot pressure


Seki wrote:
> I was out last weekend blasting on my big equipement, and after couple of
> rides, I notice that I had more pressure on my back foot, so I had couple of
> spinouts because I couldnt compesate chop easaly.
> I seems that everything was trimed just fine, I was in my footstraps, down
> in harness, with my sail competely closed going prity fast, but I didnt find
> that perfect balance.
> So I started to move harness lines even it seems ok in my hands, and mast
> foot as well, but it just didnt work.
> I m not sure where did I went wrong, only thing I didnt try is outhall, it
> was little bit loose but just enough to get the sail touch the boom, becuse
> of low wind, but I think that it is OK for a full cam 8.5 sail (V8
> streetracer).
>
> Thanks for any advice!

Try lowering your boom. This will shift the pressure to your fromt
foot. See Brad Duffy's "University of Speed" tape if you can get it.

I hope this helps
Stu Snodgrass



29 Jun 2006 11:50:07
(PeteCresswell)
Re: BAck foot pressure

Per Seki:
>Spinout

Spinout... feels like the fin stalls. End result is that I'm going sideways on
a plane. When I have the presence of mind and coordination, I can get out of
it by sort of bunny hopping the board.
--
PeteCresswell


29 Jun 2006 09:24:39
Re: BAck foot pressure

As others have said, make sure your outhaul is set within the design
range and more importantly that there is minimal pressure on your back
hand. You can run with the outhaul loose, but you'll need to
compensate by having your harness lines farther back on the boom.

Also, if you were on a swept-back fin or a weed fin, you will get more
back-foot pressure. Big weed fins put virtually all of the load on
your back foot.

Oh, and if you can, move your footstraps farther back.

sm



Seki wrote:
> I was out last weekend blasting on my big equipement, and after couple of
> rides, I notice that I had more pressure on my back foot, so I had couple of
> spinouts because I couldnt compesate chop easaly.
> I seems that everything was trimed just fine, I was in my footstraps, down
> in harness, with my sail competely closed going prity fast, but I didnt find
> that perfect balance.
> So I started to move harness lines even it seems ok in my hands, and mast
> foot as well, but it just didnt work.
> I m not sure where did I went wrong, only thing I didnt try is outhall, it
> was little bit loose but just enough to get the sail touch the boom, becuse
> of low wind, but I think that it is OK for a full cam 8.5 sail (V8
> streetracer).
>
> Thanks for any advice!



29 Jun 2006 11:00:48
polarbear
Re: BAck foot pressure


Seki wrote:
> "(PeteCresswell)" <[email protected]> wrote in message
> news:[email protected]
> > Per Seki:
> > > I had more pressure on my back foot, so I had couple of
> > >spinouts because I couldnt compesate chop easaly.
> >
> > That happens to me when I don't have enough fin under the sail.
> > --
> > PeteCresswell
>
> Spinout or back foot pressure?
> I think my fin is 46 cm for 8.5 sail, I think it is enough. I tried the 54
> cm and it is definitely to big.

I use a 57cm or a 62cm with my 8.5. A 46cm is definitely too small.
What kind of board to you have?



29 Jun 2006 12:13:12
nikita
Re: BAck foot pressure

Not sure about the "definitely too small" part. I run a 46cm (Curtis
Freeride) with the Ezzy Infinity 8.5 on an X-Cite 135 and have no
complaints. Feels pretty balanced and spins out only if I jump it and
don't do a good job of landing. Re-catches pretty quick though.

Unfortunately, I don't have much to offer on the back foot pressure
issue. Chances are you'd need somebody to look at your kit and your
technique first-hand to be able to diagnose the problem.


polarbear wrote:

>
> I use a 57cm or a 62cm with my 8.5. A 46cm is definitely too small.
> What kind of board to you have?



29 Jun 2006 12:28:30
Oahu62
Re: BAck foot pressure

I run into the same problem, but here in the Gorge on small stuff. I've
tried every combo of outhaul, downhaul, line placement, mast foot
placement, boom height, etc. One thing that does work is moving back
the fin, but that is with an A box, which you don't have with big
stuff. I have just accepted that I have to consciously weight my front
foot, which is definitely not natural for me to do. I am all back foot.
Maybe I should go where the wind is light and fins are big!


Jay



29 Jun 2006 13:16:05
Jrobb
Re: BAck foot pressure


Seki wrote:
> I was out last weekend blasting on my big equipement, and after couple of
> rides, I notice that I had more pressure on my back foot, so I had couple of
> spinouts because I couldnt compesate chop easaly.
> I seems that everything was trimed just fine, I was in my footstraps, down
> in harness, with my sail competely closed going prity fast, but I didnt find
> that perfect balance.
> So I started to move harness lines even it seems ok in my hands, and mast
> foot as well, but it just didnt work.
> I m not sure where did I went wrong, only thing I didnt try is outhall, it
> was little bit loose but just enough to get the sail touch the boom, becuse
> of low wind, but I think that it is OK for a full cam 8.5 sail (V8
> streetracer).
>
> Thanks for any advice!


Seki,

I think your back foot pressure is from mis adjusted harness lines and
possibly boom height as stated previously. Your fin sounds right size.
I normally run a 44cm on my 7.3 but can run down to a 34cm on my
speedster slalom board with minimal spinout in all but the heaviest
chop. Move your lines so you weight your front hand and the sail feels
like it wants to open up at the front then inch them forwards cm by cm
till you get balance between front foot and back. Be careful with too
low boom as the lower you go it causes you to leverage it harder and
harder actually putting the force onto the fin. I generally run mid
pec level. If still giving you issues as you are cruising lean (swing
body) forward...yes you will be pushing off with back foot but the
force will be more along the fore-aft centerline of the board/fin as
opposed to being more perpendicular to it. Keep legs bent and absorb
chop not stiff leg it. And like you were doing, weight the harness
profusely.

Good luck

J



29 Jun 2006 15:40:48
Dan Weiss
Re: BAck foot pressure

It could be both or either insufficient downhaul or insufficient
outhaul. It very much depends on the particular sail and assumes you
are using the correct mast. I would try increasing downhaul in 1/2cm
increments until the sail lightens up. Too little dh will cause the
sail to pull more from the back 1/3 of the sail, and from up high.

It might also be the case that you are trying sheet in without bringing
the mast to windward as you do so.

-Dan
Seki wrote:
> "kurt" <[email protected]> wrote in message
> news:[email protected]
> >
> > Get an adjustable outhaul. More outhaul should effect the spinout
> > potential, no?
> >
> So you think the problem from the title was the result of not enough
> outhall?



29 Jun 2006 17:18:11
rod.r
Re: BAck foot pressure

What is your board?

The smallest fin I use with my 8.5 is a 480, biggest is a 650, most
used is a 540.

I agree with the others:

More DH
More OH
Harness lines back as recommended by Guy Cribb

Worked for me.



30 Jun 2006 09:15:47
Seki
Re: BAck foot pressure

Guys, this is a lot of answers and thanks very much!

Anyway, my board is an old RRD Lucky Stripe , not realy common shape, a 185
l very light (8.5 kg) big slalom board, which is not very wide so it cannot
take to big fins - board wants to flip. I tried bigger fin whit this kit
and it is not comfortable.
The NP V8 8.4 is just right sail for this board (range 7.0 - 10.0 sails),
with orig. 100% c matrix mast.
It is preaty damn fast in light winds and realy fun to ride.
Spinout is not very big problem for me, I usualy get out from it by pushing
the back leg under my but, or just get out of straps and step forward, but
this balance between leg pressure is not very comfortable, and I end up in
kind of silly position, pushing my body forward.
I think I rigged my stuf by the book, but little bit loose downhaul and
uphaul for lifht wind.
My boom position is prity high, almost in the top of the boom pocket, but I
m 195 cm tall, and it is racing equipement with little longer harness lines
so I can hang out properly.
Straps cannot go any farther back.
So I was mostly trying to trim my mastfoot position but you think it doesnt
have any influence in my problem?! Is it normall that mast foot position for
taller man is more forward than for the smaller guy?
And that means that taller guys cannot ride the biggest sails of the board
range - cannot push the mastfoot more forward over maximum.
Oposite for the smaller guys.....
Sorry if this is too much philosophy!




30 Jun 2006 19:18:11
Jerry McEwen
Re: BAck foot pressure

I can weigh in on this part. My buddy has exact same board as I do,
but he is 4.5 inches taller. He showed me the sweet spot for the mast
and I tried it a bunch of times, finally brought the mast back in the
track about 3" and now it is wonderful. So my answer is a definite
yes.

On Fri, 30 Jun 2006 09:15:47 +0200, "Seki" <[email protected] > wrote:

> Is it normall that mast foot position for
>taller man is more forward than for the smaller guy?



01 Jul 2006 21:50:58
polarbear
Re: BAck foot pressure


nikita wrote:
> Not sure about the "definitely too small" part. I run a 46cm (Curtis
> Freeride) with the Ezzy Infinity 8.5 on an X-Cite 135 and have no
> complaints. Feels pretty balanced and spins out only if I jump it and
> don't do a good job of landing. Re-catches pretty quick though.
>

My other question was what kind of board...;-)I did use a 48 Techtonics
Spitfire with a "free formula" type of board (86cm wide), and it was
ok. No complaints either. If you use a formula board, then it's
definitely too small.



02 Jul 2006 11:30:13
Kurt
Re: BAck foot pressure

Maybe a very simple problem. Is your board flat on the water? If your
board is at an angle, your fin will be much more prone to popping out of
the water, and especially in chop.

On Thu, 29 Jun 2006 08:53:40 +0200, Seki wrote:

> I was out last weekend blasting on my big equipement, and after couple of
> rides, I notice that I had more pressure on my back foot, so I had couple of
> spinouts because I couldnt compesate chop easaly.
> I seems that everything was trimed just fine, I was in my footstraps, down
> in harness, with my sail competely closed going prity fast, but I didnt find
> that perfect balance.
> So I started to move harness lines even it seems ok in my hands, and mast
> foot as well, but it just didnt work.
> I m not sure where did I went wrong, only thing I didnt try is outhall, it
> was little bit loose but just enough to get the sail touch the boom, becuse
> of low wind, but I think that it is OK for a full cam 8.5 sail (V8
> streetracer).
>
> Thanks for any advice!



06 Jul 2006 12:48:02
Wal
Re: BAck foot pressure

That and try moving back footstrap all the way back