True Ames Surf Fins Blog

Fin Design at True Ames: The Importance of Fin Template and Foil December 12 2012

fin-foiling The outline of a fin is what determines the area and the look. The way the area is distributed on the fin is what makes fins individual and work in so many different ways. A wide base fin with a wide tip is the most stable but not forgiving. A narrow base fin with a narrow tip will be very loose and fast but unstable at slow speeds. The fin’s sweep (or rake angle) affects the board’s ability to carve turns. A more vertical fin will make tight turns and fast directional changes while a more raked fin will carve wider arcs and handle more power through turns. Tail width is also a factor in fin choice. Narrow tail boards do not require deep fins because there is less distance from the fin to the rail. A wide board requires a deeper fin than a narrower board. For example an 8’ egg style board that is on the wide side should use about an 8.5” to 9.0” fin. A narrow tail single fin board that is 7’6” can use a fin in the 7” to 8” range. True Ames Surf Fins incorporate a constant foil which means you will not find any flat spots on our fins that may cause water disturbance which will ultimately cause poor performance. Our bigger solid color fins are foiled from 7/16” solid 6oz. glass sheet stock. Smaller fins do not need to be so thick to have the proper foil. To read more about fin design and how to choose the best surf fins check out trueames.com
 

John Perry Surfboards: Threedom December 10 2012

Our friend John Perry is constantly working on new board designs and bringing some back from the archives. Check out his latest: This is a short board shape with a 2+1 setup. His Team riders Shawn and Tony are putting this board to the test. check out the article below. Check out the John Perry Performer fin at trueames.com img_2867

The conception of the ”Threedom” fin configuration came over us, myself and one of my best mates Dave Lambertson of Carpinteria, in a garage relaxing over a couple of games of billiards  In 1980, we had a circus of board designs to choose from; single fins, twinnies and now the thruster.  That being said the focus of our conversation slipped right into critiquing board design.  Ok, so the single fin is maxing out with no-noses, wide points behind center and wider tails.  The twin fin, for those that could ride them, were slashing and skating in and out of control, if you will and then the resolve to those who couldn’t manage either was the thruster, to plug the gap, no offense to twin lovers.  I always had respect for those that could rip them.

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Oh….so back to the “Threedom” concept………. Dave, a sagey kind of thinker, proceeded to analyze the thruster.  Apparently he said he had had an earlier epiphany before he went to sleep one night about making the side fins smaller and the back fin taller to alleviate the tension on your back foot that never seems to allow you to stray too far from the cluster.  I was now mind surfing his epiphany and senses.  At that time I had a shaping bay inside the surf shop called “Ocean Rhythms” and couldn’t wait until morning to draw one up.  I had some outlines in mind already that might fit this new fin array and found the fin size; shape and placement had to be placed properly to meet this vision.  Obviously I made Dave the first one and was glassed by Moonlight Glassers of San Diego. shawntracht-threedom-1

Since the wave prospects in Santa Barbara in the summer are rare, we ventured deep into mainland Mexico for some testing.  We hit some classic, quality waves and a bonus hurricane 10’ swell!  I had brought down a thruster and we traded off the new one which we hadn’t named yet between us.  I approached it with no expectation, just go for it and see where it wanted to take me.  Well, it did the opposite!  I took it where I wanted to go, kind of like surfing where your eyes lead you.  Wow!  My feet weren’t always over the fins and I could trim forward like a single fin. Cutbacks were smooth and drifted controllably, pulling verticals without losing speed and almost at will due to the side fins that are placed higher up on the rail line.  Because the side fins are toe in slightly and the fins spread further apart from one another, there is low drag and lots of carried speed throughout the tail section.  Needless to say, that is where we both agreed to characteristically call it “Threedom” (freedom!). performer_sizes In good fun, we added the “All World’ phrase to go along with our shared venture into discovery.  Obviously our take on this was not to replace a particular design, but to expand our horizons.  We made about 150 “Threedoms” out of Ocean Rhythms in the early 1980’s.  The board model never really was acknowledged all these years due to the explosion of board marketing and professional surfing.  It is fun to share this design now since there is a new explosion of sharing all and any kind of board design.  Some 30 years later, I still prefer riding the “Threedom” fin configuration which now is typically called a 2 + 1 set up.  I know that there are some of you out there that have experienced the “Threedom” in the same light Dave and I have.  


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