Search found 40 matches

by PhillyViking
Tue Aug 04, 2020 10:47 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 22
Views: 142

Re: Quad Concave Body Board Study

following are the closest boards I could find to your wings. Mostly the wide back. Except that instead of having distinct dorsal fins the entire board has some delta shape characteristics. ' K. The paipo guys at Queens Beach in front of Kapiolani Park (near the Honolulu Zoo), Larry Godard Interview,...
by PhillyViking
Mon Aug 03, 2020 2:03 pm
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 22
Views: 142

Re: Quad Concave Body Board Study

C, Wow! now that is interesting! I would love to see the view of tail from the rear on the same plane as the board as well. I like your approach: build composite for flex control / basic rocker shape and then add PE for buoyancy and shape refinements. That's opposite of convention but makes sense to...
by PhillyViking
Sat Aug 01, 2020 7:30 pm
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 22
Views: 142

Re: Quad Concave Body Board Study

B, Your comments and pics clear up my confusion. Canadian currency does "exchange" to US currency: US Coins Dimensions: https://www.usmint.gov/learn/coin-and-medal-programs/coin-specifications Canadian Coin Dimensions: http://www.saskatooncoinclub.ca/articles/02a_coin_specs.html Will do the actual "...
by PhillyViking
Fri Jul 31, 2020 11:06 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 22
Views: 142

Re: Quad Concave Body Board Study

B, Thanks for the Pics and comments! If I am seeing your preferred green board correctly then it could be described as two concaves with outsides swept up to the rail edge more sharply then the sweep to the center. That sharp sweep creates the "wing". The peak of the center is close if not on the sa...
by PhillyViking
Thu Jul 30, 2020 8:26 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 22
Views: 142

Re: Quad Concave Body Board Study

B, Thanks for the additional pics. I have a completely different view of the red board now. Here is the 48x19x1" single concave I recently built for shore breaks: IMG_20200514_145721130.jpg Here is my Bonzer: IMG_20200305_101156820.jpg Here is an example of a typical BB with a quad concave: quadconc...
by PhillyViking
Thu Jul 30, 2020 7:01 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 22
Views: 142

Re: Quad Concave Body Board Study

B, I just reread your Aug 2018 Finless Observations comments. My take home is that the finless board was faster and more natural feeling down the line but you did better when you mounted the 2" fins at a break that required more emphasis on turning, Or, were you simply saying that you decided to use...
by PhillyViking
Thu Jul 30, 2020 6:56 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 22
Views: 142

Re: Quad Concave Body Board Study

B, I just reread your Aug 2018 Finless Observations comments. My take home is that the finless board was faster and more natural feeling down the line but you did better when you mounted the 2" fins at a break that required more emphasis on turning, Or, were you simply saying that you decided to use...
by PhillyViking
Wed Jul 29, 2020 11:22 pm
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 22
Views: 142

Re: Quad Concave Body Board Study

B, Thanks for the reply. I would love to build a finless that turned and stuck steep faces as well as my Bonzer. I have seen your prior comments with great interest. Thats a great shot of the green board from the rear. What happens to the concaves forward? Is it a single to double concave like the B...
by PhillyViking
Wed Jul 29, 2020 3:27 pm
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 22
Views: 142

Quad Concave Body Board Study

I am getting ready to build a fin-less board. I have been looking at the trend in Body Boards to use quad concaves. The shallower inner set is for turning and taking a high line and the outer set to move water out the back fast and to further help with turning when sunk. Most of the BB makers have a...
by PhillyViking
Sun Dec 08, 2019 11:30 am
Forum: Your Wave
Topic: Greetings from the Island thats not an Island.
Replies: 18
Views: 7581

Re: Greetings from the Island thats not an Island.

My thin, narrow 48" Xylem board also has a convex bottom (side to side). The convex element helps it turn fin-less. Put the convex side of a spoon next to water flowing from a faucet and you will feel it pull in. I enjoy the board much and it is the best of my quiver for duck diving due to its thin ...
by PhillyViking
Sat Oct 27, 2018 2:36 pm
Forum: Paipo Board Design & Building
Topic: Am I asking for too much?
Replies: 13
Views: 1968

Re: Am I asking for too much?

I ride 4GF and G-Mat surf mats in conditions from tiny to OH+. There are fatter mats available for small conditions but I find that technique on an all around mat can do the job in small junky conditions.. Less air (I mean barely any) makes catching waves easier (reverse rocker suction effect) and t...
by PhillyViking
Mon Sep 24, 2018 3:56 pm
Forum: Paipo Board Design & Building
Topic: Plywood and cork
Replies: 12
Views: 1955

Re: Plywood and cork

As I said my board with a cork board core (not just skin got heavy). I circled back to what should have been my first step .. what are the relative densities of materials?: Cork 200 kg/m3 for NL-20 http://www.corecomposites.com/products/core-materials/corecork.html Paulownia 280 kg/m3 https://www.wo...
by PhillyViking
Tue Aug 28, 2018 3:14 pm
Forum: Paipo Board Design & Building
Topic: Plywood and cork
Replies: 12
Views: 1955

Re: Plywood and cork

I guess I could think of this as fairing as in wood boat making .. smooth and seal.
by PhillyViking
Mon Aug 27, 2018 9:12 pm
Forum: Paipo Board Design & Building
Topic: Plywood and cork
Replies: 12
Views: 1955

Re: Plywood and cork

I have been in slow-mo on a cork core project with each step weeks and even months apart. I will give a full report when I actually finish sometime in this decade. I was initially going to use titebond III to adhere cork to paulownia ply but the titebond manufacturer I called raised concerns. I turn...
by PhillyViking
Fri Apr 27, 2018 8:18 am
Forum: Paipo Board Design & Building
Topic: Top vs Bottom Layers of Composite
Replies: 9
Views: 1945

Re: Top vs Bottom Layers of Composite

Asier, I like that you achieved the right amount of flex while retaining sufficient strength with your layers. Looks like your board would travel well. My board will travel to Costa Rica and Hawaii. I assume your examples use epoxy? Your experience is helpful. Some say that if you vacuum epoxy into ...
by PhillyViking
Thu Apr 26, 2018 5:50 pm
Forum: Paipo Board Design & Building
Topic: Top vs Bottom Layers of Composite
Replies: 9
Views: 1945

Top vs Bottom Layers of Composite

I am finally getting around to making a Paipo. I found this link while thinking about what layers to put on the top vs the bottom of the board. http://www.bertram31.com/proj/tips/core.htm According to that article tension strength is set mostly on the bottom skin. The top needs proportionally less s...
by PhillyViking
Wed Sep 23, 2015 4:12 pm
Forum: Paipo Board Design & Building
Topic: Bodypo New Blank
Replies: 9
Views: 2907

Re: Bodypo New Blank

How did this work out for you? I looked at californiasurfcraft.com/products/bodypo. I like the idea of something that duck dives easily, has more float than wood and at the same time has flex that might give some mat like feel. Can it do a big bottom turn with acceleration when needed?
by PhillyViking
Sat May 30, 2015 4:10 pm
Forum: Paipo Board Design & Building
Topic: Fin Advice
Replies: 27
Views: 12675

Re: Fin Advice

Is that for Jacksonville or Costa Rica?

For plywood paipo, also consider wakeboard fins. Some are like small surfboard fins and attach via metal bolt the could be counter sunk on the top.
by PhillyViking
Tue Apr 14, 2015 10:57 pm
Forum: Paipo Board Design & Building
Topic: Finned Xylem Paipo
Replies: 15
Views: 9562

Re: Finned Xylem Paipo

Thanks for the great comments. I will definitely reset the toe in on the Xylem sides to parallel. I did try some asymetrical-foiled sides one day without benefit but the varied conditions make it hard to conclude. It will also be interesting to go back to finless or just minimal fin using just a nub...
by PhillyViking
Tue Mar 31, 2015 9:06 am
Forum: Paipo Board Design & Building
Topic: Finned Xylem Paipo
Replies: 15
Views: 9562

Re: Finned Xylem Paipo

Correct that riding flat nose rocker constrains big bottom turns on toothy waves requiring earlier turns,, angled take offs, or riding back further. However, I only ride way back in situations where I am committed and all the nose rocker in the world would not help.. That's rare. I make a point of s...