I’ve searched and searched but everything I’ve found is about keels.
I’m building an asymmetrical board.
On the frontside I want to put a box that I can drop a twin (think MR) or a keel in to.
The twin (MR) is the preferred fin and the keel is a nice to have.
Anyone have any guidance on how the box should be positioned to accomodate one if not both of these options?
wtf…I even google searched that thing…thank you, Mr. Melville.
I think Keith said yes.
(btw, thanks for that. After seeing Bud’s fabulous twins, I really want to build one too)
How long is the board? Oh, wait - it's an assymetrical... How long is that side of board?
You may need a slightly bigger twin than the stock MR, which you can make yourself, have GT make for you, or just get serious and call Mr. Griffin.
it’s 6’6 on the fish side (and about 17 1/4" at 12" if it was symmetrical…so 8 5/8" from centerline to rail on that half)
On a 6'6'', a modern twin would go at about 10'', no more than 1.25'' off rail.
Here's two asymmetricals, they both have keels, but the one with the FCS boxes was originally ridden with an MR style twinfin on the frontside rail. The problem with switching between a keel and a shorter base fin is finding the happy medium that works for both fins. I set my front fin at 10 3/8" from the tip of the tail and 1 1/4 in from the rail with 1/8" toe-in. I set the cant so that the tip of the fin was over the edge of the rail. Single concave, so degree isn't really relevant. Long story short, with this wide tail, the keel on the frontside was way better than the regular twin for drive and still plenty loose. Ideally, I would have a placement for the keel just a bit closer to the tail, say 8.5 or 9" up (like the board on the right with glass ons. BTW, I have ridden it as a quad and that went good as well, but I liked the drive of the keel better so went back to that setup.
[img]http://i497.photobucket.com/albums/rr335/asurfrat/asymmetryisunderrated.jpg?t=1284727061[/img]
regarding your tail shapes…did you like one over the other?
I guess you're asking me? I like the regular footer tail aesthetically, but being a goofy footer, I like the bottom board better. If I make another one for me, I'll use that template, but with the long rail on the other side. I made the "regular footer" version for a friend. We switched boards one day, and I did like the way it rode, but the long rail on the toe side definitely feels better than it being on the heel side.
yeah, I borked the reply.
hard to quantify given the different orientations, but I was wonder if the deeper pin on the one rode better or worse than the less pronounced tail design.
They both work well, I was thinking "mini Sims" with my board so I didn't make the heelside rail that much shorter or pulled in. The guy I made the other one for with the deeper pin loves his. I posted a pic of him doing an upside down lipper on another asymmetrical related post a few weeks back. They both have such wide tails, they're like riding on ball bearings. Really good wave catchers and the keel gives it a great frontside drive. You have to get used to the shorter rail on your backside when you come off the bottom frontside and into a cutback. Super fun boards, I'm definitely a believer!