love your straight forward answers Bruce.
all the best
Boards with rear quads and flat foils closer to rail have been my preference… 1-5/8’ to 1-3/4" trailing edge from rail works. The forward pair of fins are typical at 1-1/4" trailing edge with 1/4" toe in… cant dpends on bottom config(s).
All my best… shaper brothers share the wealth, I can’t take it with me.
I feel privileged to have some of you guys chiming in,
The current problem is too much pivot, which is the opposite problem to what I was expecting, I don’t think that the board would have problems surfing up and down the face if I can calm it down a bit.
It turns sharp as anything without even the hint of sliding out, I did a couple of crazy fast layback turns which I havnt done in years, but controlling the boards squirrelyness between manouvers is the hard bit, it needs dulling down -
If only I had left enough space in the tail for a thruster set up -haha
I still think I can majorly dull the board down enough for it to surf really well.
I’ll keep you posted whatever the outcome.
Cheers
Ever since the inception of multi fins, the shaper needs to envision and grasp the concept of LEVERAGE.
Leverage doesn’t exist in a single or twin fin, well, other than fin to rail, but with the advent of thrusters aka tri fins, you have a leverage effect taking placing from the positioning of fins located out toward the rail versus a single or twin fin postion with nothing placed behind to gain leverage.
Quads also have leverage albeit the angle of leverage is created out at the rail versus the centerline angle of a tri fin’s center fin to the rail fins.
The spacing between each fin within a cluster of a tri or quad will also effect the amount of leverage the board will ultimately have, as well as the postioning of each fin in respects to the tailblock.
You also have to take into consideration the cant & toe in each respective fin has in relation to the boards length, bottom configs and rocker as well as each fin’s foil.
At the end of the day, you have a ton of variables that keeps it exciting and challenging to be a surfboard shaper.
It’s all up to you as to how you combine all these elements… you can be a magician or a total failure depending upon what your mix is.
That’s what makes the whole pursuit intoxicating and worthwhile.
Funny, Bruce, but that’s actually the first thing I thought of when I saw the original question.
I said to myself, “I know what Thrailkill’s answer would be.”
But then I kept the thought to myself cause I’m an amateur and I don’t want to clutter things up with my half-cocked ideas.
…do not know how do you obtain such a loose board with that wide tail and little tail rocker…may be you are a big fella…with an small board.
and small fins…
I bet that your skatey feeling is nothing more than “bottom surfing”; fast but too flat Surfing; you cannot put the rail in the right angle to perform a better feeling…
anyway; for your skatey problem, now the board is done, you only can change fins; so put 2 big fins on front like occy fins, and equal length but with less base for the rear; also if you can, reduce toe in and tilt of rear ones
That way you ll obtain a tamed board with plenty of drive and the possibility to push more the tail rail to unwet a bit that board and performs better.
–if for any reason the board still engage, put big fins but with a more vertical rake.
Something the windsurfers are doing here is putting the smaller fins in as the front quads and the rears are bigger. They say it handles the speed better.
Don’t do anything I do . :-)
http://s43.photobucket.com/user/griffinsurfboard/library/?sort=6&page=1
[Quote]My question is, how far can I push this concept before I get negative effects? And what negative effects would occur if I went too far
[/quote]
The only negative effect of going too far is that you’ll end up with a thruster
Me too.
Fark Quads for wide tails !
