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Messages - finbox
1
« on: January 28, 2023, 06:21:21 AM »
I have used a hand vacuum test pump that is used on cars for bleeding brakes etc.. search "mityvac" harbor freight has them. It comes with hoses & fittings that allow you the connect to the air vent - you can draw a vacuum and look at the gauge. It won't help you find the leak - but it will show that the board is not leaking.
2
« on: January 19, 2023, 12:47:06 PM »
I feel like this has not been brought up in this discussion. As for the foil boxes a guy in Florida had it dialed in. No extra high density foam needed. Individual carbon wrap on the boxes that tie the top & bottom lam of the board together. The guy in Florida also used 4 oz fiberglass with Innegra to make a really tough board. Composite Envision has 2 oz innegra listed on their website, but out of stock. one layer of 4 oz glass & 2 oz innegra would make a tough and light board. or just place the innegra at the nose, tail & rails for impact resistance. How about 2 oz fiberglass & 2 oz innegra - then carefully placed carbon reinforcements as needed. I like the idea of using different densities of foam - Kings makes boards with 1 lb or 3/4 lb foam wrapped in 6oz & 4oz fiberglass - not ultralight but shows the light foam can work. If I remember right didn't the Florida guy offer free ding repair for the first year?
3
« on: December 17, 2022, 05:39:53 PM »
Here is a airplane wing construction video - I uses CNC mold & infusion with lots of bonding of parts together with a post cure oven. https://www.youtube.com/watch?v=74KQ7Rne48k Perhaps some ideas may be used from this?
4
« on: December 11, 2022, 09:17:07 AM »
Hi, Have you been able to run a Computational Fluid Dynamics (CFD) program with the proposed foil shape? If you can compare it to a know front foil - this could help validate you design prior to making it real.
6
« on: November 24, 2022, 05:08:58 PM »
Where is the pickelball thread?
7
« on: October 08, 2022, 06:08:16 PM »
Hi, Without a router? How about a dremel tool? or a Mellon ball spoon- A knife and putty knife to remove the foam will work ( or flat popsicle stick end. Remove the foam as clean as you can, then cut a foam plug with a 1/8" or less gap then gorilla glue it in place. Leave it high and tape it down so the glue won't push it out. Sand it flush. The gorilla glue will fill the gaps. Use gorilla glue to bond foam to foam - that way you don't have to worry about the heat from the epoxy curing compromising the foam.
8
« on: September 02, 2022, 07:59:59 PM »
boltdepot.com for the long axis bolts- they are good that you can order what you need. McMastere has fixed sized packages only
9
« on: August 09, 2022, 08:11:28 AM »
I think the compression strength referred to - is the pressure ding resistance of S- glass being superior to E glass. That usually shows on the bottom of the board as how did I get that kind of damage. I like a carbon strip on the rails over the fiberglass to keep dings to a minimum. It also feels harder when you hit it with the paddle blade. My Hobie RAW with the innerga grid has aged well and is on the lighter side
11
« on: June 10, 2022, 04:19:55 PM »
12
« on: May 01, 2022, 03:00:55 PM »
Here is a photo of a prone board that was used in the surf and learning to pump. The box was leaking from the front edge. The skin had delaminated from the box, causing the leak. On further investigation the box could move up & down. So, major surgery & a fix. The divini cell was broken and just lifted out. On boards & pumping - it seems alot of boards were broken at San O 2 years ago from pumping. One big guy seemed to go thru a board per week until the board builder got it right. I think it was wood stringers.
14
« on: April 06, 2022, 07:59:01 AM »
Can you post photos of the damaged Mast?
15
« on: April 03, 2022, 09:26:50 AM »
Where did you get your carbon innegra fabric? I haven't seen that pattern before.
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