PDA

View Full Version : Why is my futura 101 flying??


dippa
26th January 2011, 06:48 AM
When I use my 101 in 20-25knt, with a 6.4 tushy lightning, I find it very difficult to keep it on the water.
The nose is always high, and its very skitty.
Is this a mast base position problem?
Is it a stance problem?
Is it a fin problem? (I use a 36cm vector that Jesper Orth used)
I'm 5'8" and weigh 80kg.
Any advice greatly appreciated.

Roger
26th January 2011, 07:23 AM
Hi dippa,
Probably some combination of all of the above issues.
Move the mast base forward a little to drop the nose.
Try different stances.
Be sure you are leaning away from the pull of the sail, not back toward
the rear of the board.
36 cm in 20-25 knots on a 101 liter board sounds far to big to me.
28-32 cm and a bit curvy (not a slalom race fin) would probably help alot.
Hope this helps,
Roger

dave
26th January 2011, 11:49 AM
also try dropping your boom height. In strong wind a high boom can also make the nose lift a bit to much.

Erik Loots
26th January 2011, 08:28 PM
I don't know the Tushingham Lightning at all. But if I guess the sail has too much lift for you when the wind increases. Mastbase, stance, fin is rather hard to say what is right or wrong on a forum, this could be already quite good (I suppose your trim is good below 20kn??).

Therefor I suggest the easiest solution (with high% of succes) would be adjustable harnasslines, just make the lines longer if the nose is too high when the wind increases. Lowering boom can help, but also could have the opposite effect (nose even higher), this mainly depends how much you drive your gear through your harnass. Check out how it works for you.

COACHG
26th January 2011, 09:06 PM
I'm with Roger on this one. I weigh 80 Kg and would be on a much smaller fin then 36 cm in 20-25 knts. For that matter, I would also be on a smaller board and sail. Depending on water state 4.5-5.0 with 85 liter wave board in rough water or 5.0-5.5 with 93 liter Futura in flat water. In any case the biggest fin I would be using is 30 cm.

Coachg

dippa
27th January 2011, 01:47 PM
thanks for the advice, I think I will start with a smaller fin.

dave
29th January 2011, 06:58 PM
as I posted before, I would try a lower boom height first. I use new tushy t4's and lightnings and for some reason I can not put my finger on, I seem to need to have the boom lower than previous models,
(or other sails I have owned for that matter) for exactly the same reason. lowering the boom for me has stopped the nose off the board riding to high, oint higher up wind, feel more in control of the wind and the sails feel easier to handle.
ps.. and this works for me no matter if I am using large or small fins in the board.

Ken
29th January 2011, 10:59 PM
Dippa,

The smaller fin will no doubt increase control. As Roger also said, moving the mast foot forward may solve your problem. I assume you have tried this since you are looking for a smaller fin.

As far as boom height goes, there is some conflict with the above posts. As Erik suggests, it depends on how you use your harness.

I sail Formula quite a bit and hanging in the harness (weight on the mast foot) with a high boom is essential to keep the board flat and under control. At speed on a reach or upwind, if you back off the harness pressure and sheet out, one can literally take off. I use the same approach on my smaller boards - boom about neck high and weight in the harness. If I move the boom too low, I occasionally catch my harness line in the harness hook while gybing. Not a good thing.

Don't forget, it you move the mast foot up only a few cm's, you should also raise your boom a little too. If you feel "scrunched up" while in the straps, the boom is too low.

dippa
31st January 2011, 06:05 AM
as I posted before, I would try a lower boom height first. I use new tushy t4's and lightnings and for some reason I can not put my finger on, I seem to need to have the boom lower than previous models,
(or other sails I have owned for that matter) for exactly the same reason. lowering the boom for me has stopped the nose off the board riding to high, oint higher up wind, feel more in control of the wind and the sails feel easier to handle.
ps.. and this works for me no matter if I am using large or small fins in the board.

Yeah, you are right Dave, the new Tushy lightning seems to be a very difficult sail to to trim right. All my problems started when I bought this sail a few weeks ago, and I just cant get it set comfortably, I've moved my harness lines, bought a new boom and 100 perc. carbon mast, but it still wont rig right.
I think I will go back to Severnes!

Lessacher
10th February 2011, 01:01 AM
I work the Rake 30°fins. 28cm , is diagonal 35cm long. Doubleasymm.fin. 100% carbon.Worked in
Germany. No spin out. Please look: www.designlessacher.eu
Wolfgang

willy
10th February 2011, 06:23 AM
Dippa, depending on the water state, on 20/25 knots in open ocean, I with 72 kilos go with my wave board and 5.7 , could be that you with 80 kilos could go nice with a smaller fin, the mast one inch forward than usual and watch your foot straps position, if you were using them too backwards, make them one notch forward and rise a little your boom.

kvda
11th February 2011, 03:59 PM
Why it's flying? Because it's fast!

now more serious: 20/25 knots is quite a lot of wind for a freeracedesign as a lightning. In able to get a more stable platform follow the tuning tips given in this topic first. If they won't help you, pick a more downforce racing sail.

I used to own a futura 101 (2008) and it was really great in 20-25 knots with an NP RS4/S 6.2 sail !

hans kleingeld
24th February 2011, 10:53 PM
When I use my 101 in 20-25knt, with a 6.4 tushy lightning, I find it very difficult to keep it on the water.
The nose is always high, and its very skitty.
Is this a mast base position problem?
Is it a stance problem?
Is it a fin problem? (I use a 36cm vector that Jesper Orth used)
I'm 5'8" and weigh 80kg.
Any advice greatly appreciated.

Hi Dippa,

I have had simular problems with my Futura 93 together with Reflex 6.2 and 31 cm select speedfin. The board was flying, feeling very fast out of control, but in reality wasn't realy fast. Waterstate was flat (easy) and wind 6 Bft and gust 30-35 Kts. While the fin wasn't the problem in this case I focused on boom height and mast position. At the end with a remarkably low boom position (125-130 cm) and mast position ahead of the middle of the track the board became very balanced (lasted one hour to trim). feeling in control, still flying, but giving a lot of confidence and being very fast. In my case boot mast foot and boom height were very important to get a confident feeling and fin already was ok, not being limiting control of the set. Only a few cm's can make the difference between fun and disaster! Give it a try choosing different trim options, but at first take a fin which generates less lift (likely smaller)

Hans

Remi
25th February 2011, 07:37 AM
Hi Dippa,

You might test the 2011 fin who is deliver with it, the fin calm down the board and make it very fast and comfortable. Slalom fin give more lift and are more complicate to use.
This fin also give you a very easy jibe and smooth.
Look like your problem come mainly from the trim of your sail or shape, I don't know this one.

All the best

dippa
26th February 2011, 08:13 AM
Thanks for all your suggestions.
I have purchased a Select freeride fin, so hopefully this will help.
I have also gotten rid of the Tushy Lightning, which I didnt really like.