|
|
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
Messages - sflinux
2
« on: January 30, 2023, 08:58:47 PM »
And how about the the relationship of center of mass relative to the pivot point of the swing weight? Erik Antonson commented that he likes to slide his mast forward in the box to minimize swing weight for pumping. He commented that the heavy weight of a SUP wasn't a negative thing when the mast was moved forward in the box, but was when it was further back in the box. The KD Maui foil mast placement of holding the foil at 1/3 back [center of pressure] from the leading edge from the front foil and have the board be level (upside down). Erik is moving his mast more forward relative to this setup to make pumping easier. https://soundcloud.com/progressionproject/foil-series-ep-7-kane-dewild 23' https://www.youtube.com/watch?v=SVgOg8r6zbg
3
« on: January 30, 2023, 08:01:51 PM »
Sick! I like the equation. Jet skis are noisy and stinky (gas fumes). An all electric jet ski always seemed like the obvious answer, and finally became a reality in 2022. Beasho are any of your buddies using the T3MP3ST Maverick GT? https://www.t3mp3st.com/Specifications: RunTime: Up to 4 Hours Charge Time: 60 Minutes to 80% Capacity: 0-4 Humans Motor: 550 HP Battery: 100 KWH+- Charger: Level 3 Dimensions: 13.6’ L X 4.4’ W X 5’ H, 18” DRAFT Weight: 1,300 LBS
4
« on: January 29, 2023, 08:19:26 PM »
Beasho, the board is looking killer. The carbon rods looks bomber. Do you think high density pour foam would be lighter than carbon rods? https://www.youtube.com/watch?v=X496qvFC2bU
5
« on: January 26, 2023, 06:15:25 AM »
This XPS has a density of 1.6 pounds/ cubic foot: https://xps.supply/product/kingspan-greenguard-4-x-4-x-8-square-edge-board-insulation-21/That converts to the above units of 25.6 g/L {(1.6 pound = 725.7478 g, cubic foot = 28.31685 L) => 725 g/28.3 L} So a final board density of ~32 g/L is impressive. With 0.1% water absorption, an unfinished 100L board could take on 0.1 L = 100 grams Assuming the volume stays the same, but the weight increases, that would give a "wet" density for XPS of 26.6 g / L. {28.3165 L x 0.001 = 0.0283165 L of water = 28.31685 g of water; (725.7478 + 28.31685) / 28.31685 L } Is this where you guys are sourcing your XPS?
6
« on: January 26, 2023, 05:21:34 AM »
With all the talk about board lengths, and widths why doesn’t anyone talk
WEIGHT ?
What does it WEIGH?
Or more specifically, don't we want to know the density of a SUP foil board? Density = Mass (g) / Volume (L) Reference) 1 pound = 453.5924 grams ; 28.34952 g = 1 oz e.x. #1) i.e. Your foil amigo's board is 9 lbs right now: 7' 6" Board x 21" @ 125 Liters Density (foil amigo's board) = 4082.3 g / 125 L = 32.7 g/L e.x. #2) Flying Dutchman 100L board @ 160 oz Density (Fying Dutchman) = 4535.924 g / 100 L = 45.4 g/L e.x. #3) Kalama Performance E3 7'2" x 31.75" 167L @ 18.96 lbs Density (E3) = 8600.1 g / 167 L = 51.5 g/L e.x. #4) Sunova Sup foil 7'3" x 33" 167L @ 8.96 kg Density (sunova) = 8960 g / 167 L = 53.7 g/L Like board dimensions, I agree weight should also be included the specifications of a foilboard. I hope other manufacturers do like Kalama Performance & Sunova and include that spec. Jimmy Lewis does not.
7
« on: January 26, 2023, 04:06:04 AM »
Board has found a new owner (sold)
8
« on: January 18, 2023, 10:04:17 PM »
The mast placement relative to the KD Maui tail looks close, so close that it doesn't look like you would hit the tail while pumping. In a Progression Project interview with Kane, I seem to remember him saying that he likes simple structures in his boards as they are more predictable in a variety of conditions.
The GoFoil picture with the cutaway tail, the mast looks further up on the board, so much that it looks like the tail would hit the water when pumping.
How far do you put your mast from your tail?
Going back to the sub 10# goal of this project, is that to mainly minimize swing weight? If so, couldn't you use a lighter density foam outside the the standing area, as that part of the board is just there for volume, when on the water. I envision a board within a board, with the low density foam being unreinforced and replaceable with gorilla glue when damaged.
9
« on: January 17, 2023, 10:56:36 PM »
lol on your daughter's comments.
It feels like 2023 is the year of fixing stuff.
10
« on: January 16, 2023, 05:45:21 PM »
If anyone is looking for a Starboard Widepoint 8'10" SUP, I have one for sale.
The Carbon construction is bomber at 18#.
Dimensions 8'10" x 32" x 4.2" 140L
Has connections for tail block handle installed.
Board is located in SF Bay Area.
11
« on: January 15, 2023, 12:42:08 AM »
The Dowel method looks killer, thanks for sharing. PVC is heavy (density = 1.4 g/cc). I would use Paulonia wood instead (density = 0.26 g/cc and does not absorb water. [for reference xps has a density of 0.04 g/cc] Ryan Burch rode a finless unglassed chunk of foam with a specific aspect ratio, which he called the Lord Board. The board was fast, but fragile. Glassing the deck should keep it from snapping. I wonder if flexseal could be used on the rails. I repaired a catchsurf softboard with gorilla glue foam, then sprayed several layers of flexseal to give a pretty decent waterproof seal. https://www.youtube.com/watch?v=K63S4KFk9TwI wonder how much cardboard surfboards weigh: https://www.youtube.com/watch?v=BrIidL34rfw
12
« on: January 15, 2023, 12:10:52 AM »
14
« on: January 06, 2023, 08:50:06 PM »
The way I think of shortening a board relative to another is you lose equal distance at nose and tail, relative to your paddle stance. Going from 120" to 94", you are losing 26", so your nose will be shorter by 13" and your tail will be shorter by 13".
Measure your 10' board and put a mark of tape 13" from the nose, and another mark 13" from the tail. Paddle out and have a look. Imagine that first 13" of nose not being able to touch the water. To do that you will have to put more weight on the tail. I find that moving to smaller boards, keeping weight on the heels helped with balance, preventing the nose from catching. A staggered paddle stance is ideal for balance.
With a smaller board, the paddle cadence changes. You no longer want to do long power strokes, instead shorter strokes with a higher cadence is better for balance. Practice paddling never letting your paddle go past the your heels.
With a 10' board you are most likely used to moving your feet around. With a sub 8' board, any changes in your feet position are small, less than half a step.
Losing 3" at nose and tail is a very smooth transition [i.e 8'6" Simsup or 9'6" traditional]. Losing 6" at nose and tail may take some practice to get used to. [i.e 8' Simsup or 9' traditional]
15
« on: January 06, 2023, 05:37:35 PM »
https://www.blueplanetsurf.com/blogs/news/sup-board-volume-recommendation-chart/An advanced surfer typically wants a guild factor of 1.3 or larger. With your weight of 160# = 72.7 kg. You probably want a board 94.5 L to 131 L. That assumes semi-clean conditions. Going from a 10' board to a sub 8' board, you will notice the lack of stability from nose to tail (pitch). If you shrink a board in length, going wider relative in width helps with the side to side stability (roll). Using large fins will help with twisting (yaw). Let's say your 10' board was the infinity New Deal 10' x 27" 122L. Going from 122L to 94L should be no problem with practice in clean conditions. Ideally you would probably want to drop down 6" in length at a time if money was no object. The Simmons (i.e SimSUP) shapes (7'10") feels similar in glide and stability to a traditional board that is 1 ft longer (8'10"). Just an example of <8' boards that Jimmy Lewis carries:: JL Supertech 7'10" x 27.5" 94L JL Destroyer 7'7" x 29 100L JL SF Narrow 7'6" x 29.5" 100L JL Worldwide 7'9" x 29" 103L JL SF Wide 7'6" x 31" 115L I would think the Supertech would be the most challenging of the bunch. At 7'10", you probably want a board that is at least 29" wide, 31" would be more stable in non smooth conditions.
Recent Posts
|
Re: Foil Math Wave Size = 2X + 1 and Big Waves
[Foil SUP]
|
juandesooka
Today at 08:40:49 PM
|
|
|
Re: First time out in a while ..forgot how fun it was
[Sessions]
|
Beasho
Today at 01:00:32 PM
|
|
|
Re: Travel blunder, but some great recovery!
[Sessions]
|
Caribsurf
Today at 12:01:15 PM
|
|
|
Re: Print to Ride
[The Shape Shack]
|
PonoBill
Today at 09:37:30 AM
|
|
|
Re: Print to Ride
[The Shape Shack]
|
PonoBill
Today at 09:32:24 AM
|
|
|
Re: Print to Ride
[The Shape Shack]
|
finbox
Today at 08:14:56 AM
|
|
|
Re: 8'6" new deal.
[SUP General]
|
Dusk Patrol
Today at 06:59:34 AM
|
|
|
Re: Travel blunder, but some great recovery!
[Sessions]
|
Dusk Patrol
Today at 06:54:19 AM
|
|
|
Re: First time out in a while ..forgot how fun it was
[Sessions]
|
supthecreek
Today at 04:50:08 AM
|
|
|
Re: Print to Ride
[The Shape Shack]
|
Admin
Today at 01:08:42 AM
|
|
|
Re: Travel blunder, but some great recovery!
[Sessions]
|
B-Walnut
February 02, 2023, 10:03:37 PM
|
|
|
Re: Ultralight Board Designs
[The Shape Shack]
|
Beasho
February 02, 2023, 07:30:45 PM
|
|
|
Re: Foil Math Wave Size = 2X + 1 and Big Waves
[Foil SUP]
|
Beasho
February 02, 2023, 07:00:39 PM
|
|
|
WTB 9'-5'' Sunova ''The One '' or 9'-5'' Starboard Widepoint in Carbon
[Classifieds]
|
funkart
February 02, 2023, 06:39:03 PM
|
|
|
Re: Foil Math Wave Size = 2X + 1 and Big Waves
[Foil SUP]
|
PonoBill
February 02, 2023, 04:59:03 PM
|
Recent Topics
|
Foil Math Wave Size = 2X + 1 and Big Waves
[Foil SUP]
|
juandesooka
Today at 08:40:49 PM
|
|
|
First time out in a while ..forgot how fun it was
[Sessions]
|
Beasho
Today at 01:00:32 PM
|
|
|
Travel blunder, but some great recovery!
[Sessions]
|
Caribsurf
Today at 12:01:15 PM
|
|
|
Print to Ride
[The Shape Shack]
|
PonoBill
Today at 09:37:30 AM
|
|
|
8'6" new deal.
[SUP General]
|
Dusk Patrol
Today at 06:59:34 AM
|
|
|
Ultralight Board Designs
[The Shape Shack]
|
Beasho
February 02, 2023, 07:30:45 PM
|
|
|
WTB 9'-5'' Sunova ''The One '' or 9'-5'' Starboard Widepoint in Carbon
[Classifieds]
|
funkart
February 02, 2023, 06:39:03 PM
|
|
|
Kalama Ez2 vs E3 SUP
[SUP General]
|
B-Walnut
February 01, 2023, 03:11:39 PM
|
|
|
Quatro Carve Pro - 8'2" with bag. Portland, OR $1290
[Classifieds]
|
B-Walnut
February 01, 2023, 10:29:26 AM
|
|
|
Kalama E3 5'10" Phantom FCS Quiver, Duotone Slicks.
[Classifieds]
|
B-Walnut
February 01, 2023, 10:26:04 AM
|
|
|
Axis Hybrid boards
[Wingsurfing, Windfoiling, Wingfoiling, Wing SUP]
|
Dontsink
February 01, 2023, 08:48:47 AM
|
|
|
Weight Matters
[Foil SUP]
|
PonoBill
January 31, 2023, 10:10:46 PM
|
|
|
new prop design for efoiling?
[Foil SUP]
|
PonoBill
January 31, 2023, 10:03:55 PM
|
|
|
Any SUP surf rentals in Cocoa Beach, FL?
[Travel, Trips, Destinations]
|
Green Water Sports
January 31, 2023, 05:41:57 AM
|
|
|
January Stoke 2023
[Sessions]
|
surfercook
January 31, 2023, 04:52:43 AM
|
|
Show Posts
