I read the same thing John. Could also be that GG's fins were high aspect ratio, while Bill uses the wide base of the Brewer.
I bought a 9" Brewer thinking that it would be OK since I use a 9" GG 4A. The Brewer was so big I returned it and got a 7.5. I still like the GG 4A and use it a lot. I now have a 7" 4A and the Brewer for small boards, but I'm just beginning to appreciate multi fins boards again, especially the quad setup.
I have a blank waiting to become another 8' board, and I'm thinking about a semi-gun, or an in between board so that my smaller 4A and Brewer can find a new home. How many guys build a board to fit a fin?
Answer: You're right on the money - fins were made separately then joined together. Layers of extra glass were then laid into the bottom of the "V".
Will let you know how it goes.
i'd love a go on it , if it stays in one piece !!
any chance someone can VIDEO your rides in bali , please , Rowan ?
this is GREAT !!
I'm EXCITED again !
Well, the fin has had its first outing and it need some work. I surfed it in offshore, fast, overhead, semi hollow lefts (backhand for me) and can report the following:
Felt solid in the turns but way, way, way too much drag - even when paddling.
I have a couple of ideas about modifications to reduce the drag. Any other ideas a most welcome.
1). Foil both sides of the "V" portion of the fin - at the moment it's foiled on the inside only which I think is creating a low pressure pocket in that area and is pulling the boards tail down it to the water.
2). Cut away some of the rear portion of the "V" to reduce the amount of surface area which is helping to create what I spoke about in 1).
What are your thoughts ?
Perhaps the V portion should be foiled opposite to the fins, creating low pressure above the V , as well as shortening the rear portion of the V . Does your board have a lot of tail rocker? It may be causing the V portion to be angled down like a diving plane.
Thrailkill wrote: Perhaps the V portion should be foiled opposite to the fins, creating low pressure above the V , as well as shortening the rear portion of the V . Does your board have a lot of tail rocker? It may be causing the V portion to be angled down like a diving plane.
You might be right Bill.
I think I'll try to foil both sides of the V first and see what that feels like - one step at a time. If the drag is still excessive, I'll flatten the inside of the V so the foil is completely reversed from its original state.
The board only has around 1 1/2" of tail rocker (from memory). I surf it occasionally with one of Cheyne Horans Starfins and although there is the slightest hint of what you've described (diving plane) it's certainly not excessive.
Thanks for your help.
How about connecting the tips of the two fins creating a tunnel? Something tells me it may help hold the tail down in noserides.
codyguy wrote: How about connecting the tips of the two fins creating a tunnel? Something tells me it may help hold the tail down in noserides.
Sorry codyguy. But there won't be any noseriding done with this fin - it's being used in a 6'4" double ender.
Airboy808 wrote: Aloha Bill Does this twin box set up work with mini pin tail mini longboards? Looking at a 7'6 and wanting to try this on it. Mahalo
The short answer to your question is, yes. Proper fin position is crucial to board performance. Most people tend to place fins too far back, on pintails. I strongly suggest using boxes that allow fore/aft ''tuning'' of the optimum fin positions. If you are going to use fixed position boxes, PM me some dimensions of the tail. Width of the tail @ 12 inches, and width of the tail @ 16.5 inches. Also need to know fin depth, and fin base length. I'll try to be helpful.