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-   -   Putting an NP Excess 6.9 on a Kombat 97? (http://www.star-board-windsurfing.com/forum/showthread.php?t=1101)

Guest 31st January 2007 03:14 AM

Putting an NP Excess 6.9 on a Kombat 97?
 
I have a Kombat 97 inbound, can't wait until it arrives... first go with Starboard, I hope it will be a nice experience... anyway, recommended sailrange is 4.5-6.5, but I've heard people going with 6.7 without problems... but I was thinking if I could push it even more, by getting a NP Excess 6.9... am I way out of my mind, or is it "might work", or perhaps no problem at all...?

my weight is 75kg...

Guest 31st January 2007 03:30 AM

RE: ...I forgot...
 
...mainly riding B&J, and chop-blasting, starting to go for the waves... still not 100% convinced that the 97 was the right choice, 87 was also a strong candidate... current board is 115ltr...

Guest 31st January 2007 05:34 AM

RE: Putting an NP Excess 6.9 on a Kombat 97?
 
I'm close to your weight and I use a 6.9 of similar design to the NP excess on my Carve 99. I think you'll be ok on the Kombat.

mike 31st January 2007 08:36 AM

RE: Putting an NP Excess 6.9 on a Kombat 97?
 
Can't say I've tried a 6.9 but my hunch is it's questionable. I generally find if you go too big a sail for the board, things can feel sluggish/bogged down. Put on the right board & you're ripping & things feel light & free.

Ideal for the Kombat is probably 5.0 to 6.0. I find a 6.5 works nice too, but smaller is better.

If you do try it, the fin size make need to be considered.

If it doesn't work out, you'll have a good sail size for your 115L.

Guest 31st January 2007 04:34 PM

RE: Putting an NP Excess 6.9 on a Kombat 97?
 
Well, maybe 6.9 is too big... Maybe a 6.7-ish Saber or Expression (don't remember the exact sizes they come in, but I think they are a bit smaller then the Excess) could work ok for both boards s the new one probably will be my only/biggest board (for a while at least...)

Guest 31st January 2007 08:51 PM

RE: big sail small boards
 
why not??
as a heavier sailor at 90 kgs ive put all sorts of huge ass sails on small boards...
i dont have all the boards in the world to pick from.... or the windstregth i alwast need.

does it feel perfect ...no
does it get me going... Yes...

so is it worth it ie: go home or go sailing.
absolutley:D


shredulato

Jean-Marc 1st February 2007 12:56 AM

RE: Putting an NP Excess 6.9 on a Kombat 97?
 
Quote:

Guest
I have a Kombat 97 inbound... but I was thinking if I could push it even more, by getting a NP Excess 6.9...
Having been accustomed with a 2001 Carve 111, stock freeride 32 cm fin or freestyle 25 cm fin with a 6.9 sail combo, I've tested a 2005 Kombat 95 with a NP Jet 6.9 (ancestor of current Excess 6.9) sail and either a freeride 31 cm fin or a wave onshore 23 cm fin. I didn't experienced any problem, mainly because the OFO width is about the same at 40 cm as that of the 2001 Carve 111.

Now, I'm using since 18 months a 2006 Kombat 86 with my Jet 6.9 sail, either with the stock 30 cm freeride fin or with a wave onshore 23 or 24 cm fin, all with great success and fun. For my 65 kg, the Kombat 86 felt much nicer and more lively under foot than the Kombat 95, surprisingly even with the 30 cm fin and 6.9 sail combo.

So with your 75 kg and Kombat 97, I can't see any reasons why it shouldn't be as nice and fun as it is for me with the Kombat 86...Go for it !

Cheers !

JM

Ola_H 1st February 2007 04:11 PM

RE: Putting an NP Excess 6.9 on a Kombat 97?
 
I agree with JM, but its worth adding that how big sail you can put on a baord is not only a matter of "performance" but also depends on how much "imbalance" when just planing you're willing to live with and that your technique can compensate for.

In any case, on a given board, in the end you come to a point where more sail area will simply not let you plane any earlier. My GUESS is that a 6.7 will be at least as effective as a 6.9 on a Kombat 97 for most people. Sails charactersistics wil matter to btw. Lighter, flatter and "springier" will let you go further than loose leach, deep profile sails because you can be more effective with pumping in the crucial stage when just getting onto a plane.

Jean-Marc 2nd February 2007 03:11 AM

RE: Putting an NP Excess 6.9 on a Kombat 97?
 
Agree with Ola. A Saber will be more powerfull than an Excess than an Expression :

http://www.neilpryde.com/sails/sail-technology/sail-shaping-design-2.html
http://www.neilpryde.com/sails/sail-technology/foot-curve-2.html

The Saber is more deeply drafted and has more foot area than either the Excess or Expression. Therefore, a Saber 6.7 might be as powerfull as a 6.9 Excess or a 6.9 Expression.

It also depends a lot on what program do you want to focus on (speed versus manoeuvrability) :
http://www.neilpryde.com/sails/sail-technology/performance-enhancing-features-2.html
http://www.neilpryde.com/sails/sail-technology/batten-configuration-2.html

Cheers !

JM

Jean-Marc 2nd February 2007 03:34 AM

RE: Putting an NP Excess 6.9 on a Kombat 97?
 
(sorry, the edit function doesn't work anymore to add further comments)

As for potential imbalance problems with the Kombat 86, I didn't experience any so far, providing the boom lenght is not greater than 204 cm (Jet 6.9) or 202 cm (RS1 6.6) with the freeride setup (mast-track 40-50%; all 4 straps back and outboard, stock 30 cm freeride fin set in the middle of its finbox as recommended). However, with the wave setup (mast-track 30-50%, all 3 straps front and inboard, wave onshore 23/24 cm fin set forward as recommended), I must acknowledge that pointing upwind with the Jet 6.9 sail is a bit less efficient than say with a smaller sail such as a NR 6.2. The Carve 111 still is far superior with the Jet 6.9 sail and a wave setup, even with a stock 2001 25 cm freestyle fin.

Cheers !

JM


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