First, I want to thank all for the positive comments on pics of the board I did for my daughter (her boyfriend said it was too heavy due to the stout glass job I did).
So I’m working on my next board (#3) and have done a template for a fish @ 6’5" 16.5"x22"x17" with the WP 2" up from center, tips @ 11" and butt crack @ 7", using a 6’9" A blank. Is this a reasonable template for a 195lb. 48 yr. old that surfs well in his imagination? What will the benefits be in doing traditional keels vs. the quad fins or are they for completely different board templates all together. I’ve searched the forum but haven’t found any info on this.
I couldn’t wait to start on #3 until #2 was painted and glassed so I’m painting #2 while I’m shaping #3.
I’ll take a swing at this since nobody else has. The big keels work well with the wide tailed fishes. Lots of drive and very little sliding. I’m about the same age and am “a legend in my own mind.” I have almost no experiecne with a twinzer. My second shape was a twinzer. Worked good in waist to chest high surf and slid around more that I liked. My fishes are about the same size as yours and work bitchen. I ride them 90 percent of the time. Your numbers look good to me as is your choice of blank. I have made 3 or 4 from that blank. The 7’3" Becker is a good fish blank, too. It does not have as much natural rocker as the 6’9".Sorry I can’t say more about twinzers. It adds another element of sophistication. I’m a novice shaper and like to keep it simple.Mike
From what I understand, Twinzer is different than standard quad fish. Twinzer has smaller front fin? Quad fish generally have similar total fin area to keels. The reason for quad is you can tweak fin cant and angles and shapes to get variations in loosness and drive and hopefully more loose without loosing drive. Check out www.mandalacustomshapes.com for photos of canard quad which is made basically by pretty much cutting a traditional keel in half (more or less).
Twinzer has a midget front fin leading a main fin. Both fins toed-in the same. Invented by Wil Jobson.
Quads have two fins per side, more balanced in fin size. Performance depends on how the fins are set up, fore-aft spacing, whether both are toed in and/or single foiled. Canard Quads have a rear double foiled fin that lacks toe-in.
