Fin areas??

U2U2U2 · Posted: Fri Mar 21, 2014 6:09 pm Post subject:

the first and 3rd boards in my post have ProBox. The inserts cant be changed , to have 4 6 or 8 degrees of cant.

We can play with those if you are inclined.

I only know of 1 board other than OO or Real Wind that has cant.

ben.eliyahu.tom · Joined: 31 Dec 2013 Posts: 36

my boxes are all slot box so I don't think that cant would be a easy thing to play with and to my knowledge as you said basically nobody uses it. I am noticing that my fin boxes are further back than on many boards though, the leading edge of my back fins can only go as far forward as the middle of the back footstrap while many it looks like you can go all the way to the front of it? i usually sail with my footstraps pretty far forward but still..

U2U2U2 · Posted: Fri Mar 21, 2014 9:15 pm Post subject:

the foot straps are a guide of sorts..

One method is to position the forward fins, (these could be sides for a tri fin or front for a quad, location is similar)

the center of these fins in line with the REAR froot strap FRONT screw or 1--1.5 cm forward.

one method

ben.eliyahu.tom · Joined: 31 Dec 2013 Posts: 36

I guess Scott subscribes to this method as thats exactly where my thrusters fall if my back footstrap is in the middle and forward insert. mind you, considering pretty much all quads run substantially bigger back fins it would make sense to use them as a point of reference no? sort of like KT suggestss:

http://vimeo.com/17300703

http://vimeo.com/55575043

mind you its impossible for me to set my board up KT style so I like your guideline better so far hehe

U2U2U2 · Posted: Sat Mar 22, 2014 10:36 am Post subject:

Keith shapes , and is a owner of Quatro , and you ride a ... Starboard..

and # 2 guy here if I sailed like him I would...

you only have a little in the way on movement , certainly listen to him, but place fins where they feel right for you. Fins when that are not right in size shape et all, show a ugly nature , compared to dont notice anything when correct or close.

I would seriously gives some consideration to larger front for a different feel.

the foot strap measure I gave is from a Simmer shaper, Ola Helenius, who used to design for Starboard.

my 2 ¢

ben.eliyahu.tom · Joined: 31 Dec 2013 Posts: 36

I didn't realize those numbers come from Ola, he is probably the best person in this case to get get advice from Very Happy

not only did he work with starboard when this board was designed he also plays around a bunch with different settings and has a year eye for details, and bonus he is our weight as well! thanks for sharing, and I will certainly try out big fins in the front as well and post my under-qualified thoughts on the matter! general consensus is that set up works better in soft waves/ onshore conditions to get snappier turns right?

Ugly_Bird · Joined: 04 Nov 2008 Posts: 335

U2U2U2 · Posted: Sun Mar 23, 2014 9:59 am Post subject:

My thoughts are that quad larger fronts, like some Simmer & Starboard early quad,
will change the pivot point more to the front, biased so to speak , than the opposite, when they are the same size it makes sense that transitions should be smoother. Surf boards have different quad setup, most ,not all, have the fins in tandem and ALL fins close to the rail. I add this for a nice to know thing.. cause a windsurf VS surf board dont have the same forces, going up wind for just one. Initial windsurf quads

did have these, I felt straight line stability was lacking, and the board I had like that I converted back to the more accepted, rear twin like position , inside . Fronts vary from 1.5 from the rail to 4.5 to the rear of box .

Read this thread for some other thoughts on fin size, composition shape, board is similar size..... this is pretty good stuff.

http://forums.boards.mpora.com/showthread.php/71743-New-fins-for-F2-Barracuda-77-2013-Please-help

you will figure out who Iam on this forum.. its rather flattering when Ola agrees with you, will add but not always does he agree

ben.eliyahu.tom · Joined: 31 Dec 2013 Posts: 36

Awesome idea Uglybird, would have never thought of that! in a parrallel universe I am use a drug dealer version of me is using his scale to calculate fin areas that way haha

Thanks for the link U2U2U2 some great information there and Ola just replied saying he uses big fins forward most of the time except the fastest days in maui. I think that makes for a pretty good case to give this set up some serious consideration for "real world waves". He does hint you need to be more forward foot biased when riding this configuration though and that it takes more technique to initiate a bottom turn at speed so this set up and I might not tango well, but will sure try it. probably with the stock fins or the 15cm multies in the front and 11cm drakes in the back as the tiny thrusters might give a really quirky feel I think!