Search found 86 matches

by PhillyViking
Sat Jun 05, 2021 12:07 pm
Forum: Swim Fins, Skegs & Other Paipo Gear
Topic: Looking for a Better Fit, Modifying Swim Fins
Replies: 26
Views: 43191

Re: Looking for a Better Fit, Modifying Swim Fins

Two alternate ideas if this does not work out: 1.) Grind away thickness of a stiffer Pro until it is more flexible; I am only reducing length and width in this one 2.) Add in stiffener plates to the original until it gets more stiffness. How about interchangeable carbon fiber plates? Same concept as...
by PhillyViking
Sat Jun 05, 2021 11:58 am
Forum: Swim Fins, Skegs & Other Paipo Gear
Topic: Looking for a Better Fit, Modifying Swim Fins
Replies: 26
Views: 43191

Re: Looking for a Better Fit, Modifying Swim Fins

Exactly, balance long distance paddling with take-off force. It would be easy to overshoot and take too much off and end up with too little stiffness for the take off. Ergo, I am looking at 3-4 iterations so I hit it right. 1/8-1/4" per iteration. If takes even more than 4 then so be it.
by PhillyViking
Fri Jun 04, 2021 4:17 pm
Forum: Swim Fins, Skegs & Other Paipo Gear
Topic: Looking for a Better Fit, Modifying Swim Fins
Replies: 26
Views: 43191

Re: Looking for a Better Fit, Modifying Swim Fins

I tried iteration #1 of the FF Pro mod today in the pool. * I paddled for over 1/2 hr .. seemed easier that the previous session with unmodified FF Pro * the stiffness felt somewhere between the Pro and Original but still closer to the Pro * No negatives Unfortunately I did not think to take an unmo...
by PhillyViking
Thu Jun 03, 2021 1:57 pm
Forum: Swim Fins, Skegs & Other Paipo Gear
Topic: Looking for a Better Fit, Modifying Swim Fins
Replies: 26
Views: 43191

Re: Looking for a Better Fit, Modifying Swim Fins

Here is 1st pass at FF Pro mod: IMG_20210603_134157809.jpg Right to Left: Force Fin Pro - before mod Force Fin Pro - After iteration 1 of Mod Da Fin XL I will try FF Pro mod in pool on Friday. I think I will know right away if I need more off or if I went too far. I already went a bit thinner than t...
by PhillyViking
Wed Jun 02, 2021 11:25 am
Forum: Swim Fins, Skegs & Other Paipo Gear
Topic: Looking for a Better Fit, Modifying Swim Fins
Replies: 26
Views: 43191

Re: Looking for a Better Fit, Modifying Swim Fins

I used Force Fin Pro for years. I loved them. They were the only fins I could find that were comfortable and had sufficient stiffness to get thrust at take off. I wear US 12.5 EEE and must have a high arch. Everything else destroyed my feet. I estimate that as a result of 200-300 yard rides at my fa...
by PhillyViking
Thu May 13, 2021 8:05 am
Forum: Your Wave
Topic: RIP Harry Akisada
Replies: 5
Views: 6826

Re: RIP Harry Akisada

never me him but his bright light found its way all the way to Philadelphia.
by PhillyViking
Mon Nov 02, 2020 6:05 pm
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

Just reviewed your chambered board. Very cool. How does it ride compared to your SDF boards?
by PhillyViking
Sun Nov 01, 2020 10:06 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

Good idea to go a bit big on a design that can be refined down to get right sized flex. You can always add material but it seems easier to incrementally remove. I have been putting cork on the deck so I can do the same on the bottom. Somewhat like Crispi's approach, I notice that using Carbon Fiber ...
by PhillyViking
Sat Oct 31, 2020 8:02 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

My own mat riding goes back to around 1960 in Ocean City NJ. 60sMat.png That one was not the stiff canvas type. It was very very flexible but surfed. I am kicking myself for not picking up an old school rubber/canvas Surfoplane when they made them again a couple years back. I have to actually build ...
by PhillyViking
Fri Oct 30, 2020 8:44 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

I still prefer the feel and ride of a shape shifting mat over anything else. The advantage of a mat over flex foam is that you can harden the turning edge by squeezing the opposite side. I can make that work to a point then need something more rigid for certain conditions. I am trying to leave a bal...
by PhillyViking
Thu Oct 29, 2020 5:24 pm
Forum: Paipo Board Design & Building
Topic: cutting edge board design
Replies: 2
Views: 3254

Re: cutting edge board design

I love the board and the just do it attitude behind it!
by PhillyViking
Thu Oct 29, 2020 1:10 pm
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

Lord's aspect ratios for optimal speed are just that .. there are other concerns for design. Its also true that turning is used to generate speed. My mat is very fast straight out but has limitations to do a hard turn. After riding a couple of 18.5-20.5" wide paipo boards for a while, wider des...
by PhillyViking
Tue Oct 27, 2020 1:18 pm
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

Yes, Per Lord, W/L = .5 is great for clean and .4 ratio is more optimal for rough. See figure 7 at https://mypaipoboards.org/pubs/LordLindsay/PlaningHulls/1_p011-16-aspect_ratio.pdf. Clean flats would definitely benefit from more width but for rough flats, wider becomes counter productive at a point...
by PhillyViking
Tue Oct 27, 2020 10:53 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

Usher, what is about the Hubb that leads you to say its design is faster at the expense of 'turning' than others,e.g. MND? The aspect ratio and dims are close except for the WP being further forward. Following is my attempt to pull togeather some things we have been talking about. I hope I am not ju...
by PhillyViking
Sat Oct 24, 2020 12:17 pm
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

Wow, my eyes tricked me. I looked at actual specs of MND compared to Hubb board. There is actually more difference between wp to nose and wp-tail of hub than MND. The defining difference is in the NTWP (Nose to wide point). Hubb is further forward than MND. I suppose that makes it look less rounded ...
by PhillyViking
Sat Oct 24, 2020 10:51 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

also at at glance .. seems the hubb has slightly more parallel rails then some others. I have not compared the actual specs but there appears less delta between the wide-point and the tail and the wide-point and the nose width. I like that approach. It seems some of the others are too rounded. It se...
by PhillyViking
Sat Oct 24, 2020 10:36 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

more on Hubb board .. they keep concaves to 18 inches of tail. Some of the others take them more toward center point. That would relate to the idea of pivoting weight forward and back on BB. On a right sized hubb you could lean back to get weight on the channels for turning hard and lean forward to ...
by PhillyViking
Sat Oct 24, 2020 10:25 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

I see what you mean about my friend's board having a Hubberd profile - see https://hubboards.com/products/hubb-edition-quad-core-sci-five-hubb-tail?_pos=3&_sid=e3729e277&_ss=r I see that board actually has 5 narrower concaves than the MND's quad. That board has the distinct tail design and t...
by PhillyViking
Fri Oct 23, 2020 9:32 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

Many paths lead to the same destination. I got on to this BB examination because I watched a friend work the ready fore/aft weighting on his BB.. its has the basic scale and profile of a foamy BB but is fiberglassed so is stiffer and consequently faster. I see exactly what Krusher74 described. You c...
by PhillyViking
Thu Oct 22, 2020 10:40 am
Forum: Paipo Board Design & Building
Topic: Quad Concave Body Board Study
Replies: 88
Views: 1002312

Re: Quad Concave Body Board Study

I was using "blunt" to refer to the lack of a point on the BB nose outline profile. I agree that nose width and thickness are separate attributes to be considered as well. Perhaps it would be more appropriate to say a BB has a squared off nose profile that may or may not have a blunt thick...