Messages

31

Foil SUP / Re: Wing boyancy

« on: November 14, 2018, 12:59:48 AM »

Here is a link to my build, give it a go you never know......
https://youtu.be/TQKGwlQaJQ4

32

Foil SUP / Re: Wing boyancy

« on: November 13, 2018, 11:03:20 PM »

Thanks
Yep i started with the balsa as i explamed i have pics but to big to put on here i will see if i can upload to YouTube

33

Foil SUP / Re: Wing boyancy

« on: November 13, 2018, 04:29:37 PM »

Thanks for all the replies
I think the lead shot or sinkers might be the go as suggested.
It only floats at 45°with no weight on the board.
I have made several boards, but have kept the weight down on these too they are only 6kgs for 6'3" and 7'2".
The foil weights about 3kgs.
I think the perfect think would be to use water inside the wing that would be the perfect ballast..
Cheers
Scuba

34

Foil SUP / Re: Wing boyancy

« on: November 12, 2018, 06:33:20 PM »

Nar not joking.
The only question is,  how would the volume of the different foams differ, one being EPS and the other expander foam.

Maybe divinycell would be less boyant than  EPS?.
The volume problem means the board sites out of the water at 45° with no weight on it.

35

Foil SUP / Wing boyancy

« on: November 12, 2018, 04:27:17 PM »

Hi guys

Just after the facts about boyancy for anyone has been through this process.
I have made a huge wing, but to keep the wieght down i built it out of polystyrene. Then carbon wrapped.
The only problem i have is the boyancy of the wing, it has that much volume that it pushes the board out of the water.
I was thinking of just removing the polystyrene and replacing with a more dense foam like the expanding foam that you put into cavitys.
How would the volume differ between the 2 foams?
I know polystyrene has heaps of air, maybe i need to set up a test piece.
Cheers
Scuba

36

Foil SUP / Diy foil builder new foil mould

« on: July 08, 2018, 05:15:41 PM »

Just starting a sup foil build.

I Just thought i would share my technique.
I have built 3 previous in this way for kite foils, each time getting more refined.

The timber is Balsa 9.5mm planks.

Cheers

Scuba

37

The Shape Shack / Re: Diy foil builders

« on: July 04, 2018, 04:49:40 PM »

For the mast i have in the past used twill on  the outside then layers of uni, double bais all of about 7oz or 200gsm.so solid carbon.
But have learnt that all the strength is is the outer layers of 3 or 4mm.
So you need to put twill,bias and uni to a thickness of around 4mm then put either a wood core or fill it up with layers of glass.
The new build i am working on will have a ply core in the mast for wieght reduction and boyancy, but the fuse will be solid carbon.

38

The Shape Shack / Re: Diy foil builders

« on: July 04, 2018, 12:08:22 AM »

Thanks SC

The way I make a mould is as follows:
buy your self some balsa wood, lets just start with the mast, so if your mast is say 16mm thick at the thickest part, then you would need 2 x 10mm thick pieces at what ever length mast you are making say 700mm.
You need to glue them together temporarily with about 3 dabs of pva glue smallest amount of glue.

Once the glue has set and you have a mast of 20mm x 700mm x chord ..? 120mm
Draw a line on both sides of the mast for the foil normally about 30mm from the front to sand too then shape your mast, easy as with balsa.
Then do the same for your fuse, if you have a 30mm thick fuse  you will make the thickness out of 4 x 8mm pieces. Right, important super glue is locktite 401 or 406 and it sticks balsa together in seconds and will not come apart.
So glue 2 pieces of your fuse with super glue and then glue both pieces together now with 3 dabs of pva that it makes up the fuse thickness.
Then shape but be careful where you want to join the mast to the fuse has to be flat for the gluing.
Hope you havent lost interest yet?

Right next you would glue the mast to to the fuse very carefully glue with super glue being carefull not to glue both sides to together, so half of the mast thickness gets glued to half of the fuse,both sides.
Now the the mast n fuse are glued together you can carfully split the the thing down the middle where you have only put dabs of pva, simple right?.
Now you have 2 plugs to take a mould off.
Just like the video.
Cheers
Scuba 

39

The Shape Shack / Re: Diy foil builders

« on: July 03, 2018, 06:21:36 PM »

Your welcome Opie.
I have not had a board fail with that method, and i have hit a few sand bars flat out on a kite (47kph).
Happy to pass on tried and tested ways of doing stuff.
 

40

The Shape Shack / Re: Diy foil builders

« on: July 03, 2018, 04:56:03 PM »

Thanks

These are the 2nd an 3rd boards n foils that i built in 2014.
For kite surfing.
Just making another mould for my sup foil, and finishing the 3rd sup board.
Once you start its hard to stop...
All protects,  not my job.
Cheers
Scuba 

41

The Shape Shack / Diy foil builders

« on: July 03, 2018, 03:41:42 PM »

Any body thinking of making there own sup foil?
I am just posting a link, to inspire a few people....

https://youtu.be/_38cia-BouQ

Cheers
Scuba

42

The Shape Shack / What bottom/ rail shape for 7'2"

« on: June 12, 2018, 04:10:34 AM »

Hi folks
I just wanted to ask for advice.
I am currently about to start making a new 7'2" foil board.
I only build boards for the love of it, i just need to ask, what bottom/rail shape should i use so that the thing tracks really well.?
I have built a 7'6" sup foil board which is my goto board, i have put bevelled rails for 3/4 of the board then hard rails at the rear, single concave going into double concave at the rear.
This board is good and does the job but it is a little to heavy at 11kgs, i think i might have put to much nose rocker in also 7".
So this time i have a very flat rocker with 4.5" of nose rocker and a tail kick.
Sort of a down wind shape rocker.
Should i put in a single concave from the front to back to help track and fast paddler, with bevelled parallel rails.
Or do i single to double concave, or flat .
Im lost any input would be awesome 😀
Thanks
Scuba

43

The Shape Shack / Re: Short foil sup

« on: May 01, 2018, 05:20:38 PM »

Here is the bottom,
I have gone for beveled all round then very boxie from the bevel upto the deck, from the middle of the board to the tail. To help with the tracking.
Hopefully the deck will be level with the surface.
The timber is Paulawonia it wss 6mm but ripped down to 3mm 

44

The Shape Shack / Short foil sup

« on: May 01, 2018, 03:55:54 AM »

Just finishing up my short 6'2" foil sup.
Just got to fit deck grip, my decal and route out the boxes.
Meant to be 106ltrs, but we will see.
Cant wait to take her out.....

45

Foil SUP / Re: My new fugly

« on: April 28, 2018, 03:11:28 AM »

Looking good Bill,
I am just knocking up a 6'2" and shaped mine similar to your board, but gave in to some curves at the last minute 🤔.
Let us know how it goes....

Scuba