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septy
3rd March 2007, 12:06 AM
Hi,

please help, I plan to change my ACid 77 as my only wave board and get myself 2 wave boards. One for high wind 3.3. to max. 5.0, and one for moderate wind bump&jump with 5.0 to 6.0. which can also work with 4.0 if needed
Would pure acid 68 and kombat 79 be a good choice? Can K79 cope with 6.0? I am 75 kg and prefere smaller board, but not like to be underpowered

thanks

Septy

Ola_H
3rd March 2007, 02:18 PM
Hi Septy.

First the small board: At 75 kilos you're kind of boarderline between the PA74 and 68. I'm 69 myself, and I think the PA74 is a better all round board, especially if the waves are not that good. That said, I remember when I first got on the 68 after having used a few differ 74s during the testing stage. It was like coming home and the test protocol reads "this is clearly my size". So, if you don't have to use it bigger than 5.0, want it to feel good also with a 3.3, have reasonably stable winds (or are a good schlogger) and since you say you like smaller boards, the PA68 indeed is the best choice in the Pure Acid range. The 68 has a fast an effective rocker, so it gets going early for its size. But it likes a bit more drive than the 74 to come alive on the wave.

As for the big board, I have not sailed the K79 myself, so I cant say how it will handle a 6.0. I have the K87 and have used it up to 6.3 and that really didn't feel like I was in the sail size limit for that board. With some experience in sailing small boards with bigger sail, I would guess a 6.0 on the K79 works out OK. The alternative would be to get a K87, but while the 87 is a very controllable and stable board, I would still say 4.0 is pushing it. And the 79 will "connect" much better with the PA68 anyway and be a great asset in the 5.0-5.3 range on semi-good wave days.

So, I think you had allready done your homework and picket out the best pair. PA74-K87 would be an option, but since all these baords are so effective (early planing, good upwind etc) and since you say you like to be powered up, the 68-79 seems like a better choice.

The K79 comes with a 24cm crossover fin. This one is great for B&J and might even handle a 6.0 since its kind of stiff and semi-thick profiled. The PA68 comes with a Drake Natural 21. The Naturals are remarably good wave fins but ride small. The 21 will easily take you down to 3.3. I suggest you complement these two fins with a Drake Natural 23 which will be perfect for 4.5-5.0 on the PA68 and 5.0-5.3 on the K79.

Good luck.

septy
3rd March 2007, 02:53 PM
Thanks Ola for the usefull information
I will go for PA 68 and K79

Septy

Ola_H
3rd March 2007, 03:52 PM
Nice! Report back and tell us what you think when you've sailed the boards.

Cheers,

curac
4th March 2007, 06:37 PM
how much floatier is the 74L pure acid.
I have a 68L pure acid and can use that down to 18knots but after that it's a fair bit of work
(i weight 80KG)
and i was thinking of getting a bigger board and sail so i can sail in about 15knots. i don't like big boards so was thinking 74L PA with a 5.5.

anyway.. does the 74L feel a fair bit more floaty?

Ola_H
4th March 2007, 08:51 PM
Even at 80 I think the 74 can take a 5.5, especielly if you're used to sailing a 68. The 74 feels quite a bit floatier and more stable in low wind, though I guess the actual volume difference is not more than 5-6 liters. I actually think these liters will make more of a difference for you at 80 than they do for me at 69. The PA74 is quite a bit wider (2cms) and that helps too for schogging. I would stiil say it is easily drivey enough though. We had a narrower proto for the 74, but the wide version that went into production was just much better balanced. I think the slightly curvier outline and drivey bottom shape complement each other perfectly and gives the board a very wide sweets spot wrt which waves it handles.

Normally I would say that for 15 knots and 80 kilo, you should go for the 80, but again, since you're coming from the 68 and have the low volume thing wired and since the shape of these boards kind of carry weight very well when it comes to the actual sailing, the 74 will probably be a big hit with you. Kevin Pritchard (around 84) was ripping big time on it during testing also in light wind (I think he was using a 5.7 on it even).

Jean-Marc
6th March 2007, 02:34 AM
Septy,
Ola,

The crossover 24 cm fin of the K79 feels a bit small with a 6.2 sail when the footstraps are set on the freeride mode (outboard and back). Something in the 26-28 cm range would be far better IMHO. However, when footstraps are set on the wave mode (inboard and front), it's OK, althought a pure wave fin would shine better for true waveriding (softer & more twist than the crossover fin).

Cheers !

JM

septy
6th March 2007, 03:37 AM
Thanks JM

so, with bigger fin (eg. 26 or 28) 6.0 works OK on K79?
for bump & jump and freeride?

septy

septy
6th March 2007, 03:39 AM
JM
what is IMHO ? :|

Phill104
6th March 2007, 03:44 AM
septy wrote:
JM
what is IMHO ? :|

In My Honest Opinion

Jean-Marc
6th March 2007, 04:14 AM
septy wrote:
so, with bigger fin (eg. 26 or 28) 6.0 works OK on K79
for bump & jump and freeride?

Correct but please bear in mind I still don't have a 26 or 28 cm crossover/freeride fin yet to prove or disprove it.
The crossover 24 cm fin felt a bit too small whereas a 30 cm freeride fin (from Kombat 86) felt a bit too large for my taste @65 kg with my NR 6.2 sail and the freeride footstrap's setup. Since you're heavier than me, I would strongly suggest you try several fin sizes before buying if you can.

IMHO : in my humble opinion.

Cheers !

JM

septy
6th March 2007, 03:43 PM
JM

thanks for info
please tell me more about K79 and K86. Is K79 ok for 18-20 knots with 6.2 ? what you think?

thanks

Ola_H
7th March 2007, 01:15 AM
Jean-Marc wrote:
Septy,
Ola,

The crossover 24 cm fin of the K79 feels a bit small with a 6.2 sail when the footstraps are set on the freeride mode (outboard and back). Something in the 26-28 cm range would be far better IMHO. However, when footstraps are set on the wave mode (inboard and front), it's OK, althought a pure wave fin would shine better for true waveriding (softer & more twist than the crossover fin).

Cheers !

JM

Pretty much what I guessed, that the crossover 24 would kind of work for wave application with a 6.0 (6.2). I've used my K87 with a 6.3 and the Natural 25 and 26. Thats probably the ideal setup for waves, but there's always a question if the upgrade in turning performance relative the crossover 24 is worth the money. In any case, I think you will like the xo24 for onshore kind of jump and backside riding oriented sailing. The more freerideish you 6.0 B&J sailing is, the more sense a 26 crossover will make (or even 28 for pure freeride sailing with straps out). But since you will get the xo24 with the board, you can simply try it out and know you have several choices if you don't like it. A natural 23 is pretty much "a must" though since it will expand the range of both boards so much.

septy
7th March 2007, 03:34 AM
Thanks Ola
If JM tells me few words about his impressions about K79 (hopefully positive) , I got more information I expected!
:)

cheers!

Eugene
10th March 2007, 05:30 PM
Hi

I bought my new board a Pure Acid 80 (2006):D:)
I'm 52kg and my question is can I use my 6.5 sail (NP Expression 2005) on this board?
Thanks!

Ola_H
10th March 2007, 10:05 PM
Nice new board! I think that with your light weight, you could actually get by with a 6.5 on the PA80. You'll need a bigger fin though. Since you allready have the sail, you have in any case nothing to loose by trying. Do you maybe have a bigger fin for US box lying around?

Eugene
10th March 2007, 10:51 PM
Yes I know I'll need a bigger fin so I'm going to buy a bigger one. 24-25cm will be ok? the original fin(22cm) will be ok when I use my 3.7 or the 4.7 the but it also will be ok when I use my 5.8?

Jean-Marc
12th March 2007, 06:42 AM
Septy,

Sorry for my delay, I was travelling around. I'm afraid I cannot elaborate much as I just did a quick spin on the K79 of a pal with my NP NR 6.2 sail. Wind was 15-20 knots. I was on my K86, 6.2 sail and 23 cm wave onshore fin (North Shore 9.0", much more surface than the Drake natural wave 24 cm fin; *). With my 65 kg, the NR 6.2 covers nicely 15-20 knots, so really I don't know for your heavier weight.

As I said above, the K79 stock 24 cm crossover fin is fine with footstrap's wave setup but too small with footstrap's freeride setup (lots of spinout) with a 6.2 sail. Then, the K86 stock freeride 30 cm fin felt fine on K86 but is a bit too big on K79, especially during manoeuvers (tight turn, slashed turn, tight jibe). K79 felt one size smaller than K86 for sure, especially with the thinner rails and narrower tail. My gut feeling is that you can even try a 6.5 sail on K79 (with 28-30 cm fin), but not much, owing to it's limited tail width. I regularly use K86 with either a NP RS1 6.6 (15-20+ knots) or NP Jet 6.9 sail (12-18 knots; both with stock 30 cm fin which is king) without any problems.

Eugene,

Agree with Ola, you can try a 6.5 sail on PA80 since you're pretty much feather weighted, but to increase the bottom range as well as decent pointing upwind, a classic 24-25 cm wave onshore or Drake Natural 26 cm wave fin (**) might do the trick to cope with the extra power from the sail.

Cheers !

JM

(*) K86 report : http://2006.star-board.com/forum/askteam/read.asp?ID=5804
(**) http://www.drake-windsurfing.com/natural_waves.htm

septy
12th March 2007, 06:41 PM
Hi JM!

thanks for info.

phz
19th March 2007, 09:14 PM
Septy,

I just received my K79 technora and was able to try it with a 6m2 sail, a Naish AMP. I weight 63 kgs, sailed on a lake with choppy conditions with an irregular wind up to 15 kts, with the freeride settings. The board floats well for me, I pull up the sail without sinking, but it is true that the fin is a little small. You just need to pay attention and not put too much pressure on it. I will buy another fin. I am thinking of a select FSW 27 or 29 cm.
Take care.

septy
21st March 2007, 12:23 AM
Thanks Philippe!