conversion; tri to quad or quad to tri...either way

carpjaws · Post by **carpjaws** » Wed May 21, 2008 10:16 am

ok, kneeboard basics 101...can 'one' convert any template from tri-fin to quad or vice a versa?...or does the shaper have a particular 'fin setup' in mind when shaping a particular template, board bottom, wave or rider's style preference...

albert · Post by **albert** » Wed May 21, 2008 2:32 pm

yes

carpjaws · Post by **carpjaws** » Wed May 21, 2008 3:34 pm

so,the placement numbers just have to jive with the fin configuration and not run over each other...or can u use varying combinations?

albert · Post by **albert** » Wed May 21, 2008 5:12 pm

albert wrote:yes

It can all work together, plenty of people here have had boards set up to have 5 fin plugs and simply swap fin configurations.

red · Post by **red** » Thu May 22, 2008 2:02 pm

Take a thruster rear fin, split it in half and move the halves along an arc out towards the rails. As the fins get further from the stringer, the drive characteristics change (some people claim drive increases, while others claim it decreases). Nothing else has to vary.

carpjaws · Post by **carpjaws** » Thu May 22, 2008 3:03 pm

cool...now time to get a board...tomorrow

knee_boarder · Post by **knee_boarder** » Mon Jul 14, 2008 11:09 pm

this board was originally a quad and converted to three fin confinguration (small middle fin)

It was the best board I've ever had, I could do really nice tail slashes with it but it would also hold really good lines because it had thin rails.

Shame I've put on so much weight over the last 10 years that I'm too heavy for it

carpjaws · Post by **carpjaws** » Tue Jul 15, 2008 1:55 am

i have been trying different shapes to see 'if' i can do the knee-thing...biggest problem now is floatation...

Andy · Post by **Andy** » Tue Jul 15, 2008 8:55 am

mmm interesting stuff...Recently I broke out my middle fin on a nasty rock while paddling out, and apart from finding new and inventive ways to wipe-out was amazed at how quick the board felt with only 2 fins, like the proverbial cake of soap in the bathtub.

So Im toying with going for a 5fin setup on my next board, which is already cut out of the blank and leaning up against the wall waiting for me to get my mojo up for some shaping.

If anything my instinct tells me to move the back pair of fins up a tad.

cheers

andy

surfhorn · Post by **surfhorn** » Tue Jul 15, 2008 9:54 am

Quad to 5 fin fixed my board, giving it the drive of a thruster but the looseness of a quad. I dropped in a long, Fins Unlimited center box so I could experiment with fin size/placement. I already owned a large collection of center style fins that worked in FU boxes.

knee_boarder · Post by **knee_boarder** » Tue Jul 15, 2008 1:35 pm

of course you could always go for a nice single fin like this one (my first kneeboard!)

szrbloke · Post by **szrbloke** » Sun Aug 17, 2008 1:15 pm

What did that ride like mate? I've never ridden a single. Started on a twin, then went to a tri..now open to suggestions.

knee_boarder · Post by **knee_boarder** » Mon Aug 18, 2008 7:58 am

szrbloke wrote:What did that ride like mate? I've never ridden a single. Started on a twin, then went to a tri..now open to suggestions.

it didn't ride too badly if you made the drop!

It wasn't shaped perfectly and had inverse rocker, it was 50/50 whether you'd pearl on take off, if you didn't it rode really nicely!

better picture of the fin

szrbloke · Post by **szrbloke** » Mon Aug 18, 2008 2:37 pm

My mate greg used to attempt to ride a McCoy single fin board, ex Pam Burridge, that had a fin just like that. Lazor Zap.

Kneeboard Surfing USA Community Forum

conversion; tri to quad or quad to tri...either way

conversion; tri to quad or quad to tri...either way

game of numbers

red rider

workin' at it