Author Topic: Cowboy Foil Experiment Thread  (Read 26632 times)

surfcowboy

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Re: Cowboy Foil Experiment Thread
« Reply #75 on: November 10, 2017, 06:17:34 PM »
Mast started today. Iím thinking the sea breeze post is wrong as I canít really find decent 3mm ply so I went 5 mm (1/4Ē in the us.)

I cut my profiles out rough and Iíll finish them with a sander and/or router after laminating it together.

Seems like 3 ply with glass between and carbon and glass on the outside is the idea for now. Should get stuff enough. I also chose to make the mast and fuse all in one now to hopefully add some strength and avoid one more joint.

For the fuselage Iím adding 2 more plies. I think thatíll get me to about 1.5 inches with the carbon and glass laid on.

Now, Iíve got to see about a bagging rig for a single project. (UK donít try to sway me into a big real rig, Iíve got way too many tools as it is lol.)

At least this will let me test some stuff and materials are pretty cheap at this size.

Hoping to cut an eps wing this weekend.






« Last Edit: November 10, 2017, 06:19:34 PM by surfcowboy »

blackeye

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Re: Cowboy Foil Experiment Thread
« Reply #76 on: November 12, 2017, 02:02:25 PM »
I am assuming you are planning to add glass in the same plane as the plywood ie between plywood layers. I wouldn't bother as there isn't much advantage. If you think the fibre is justified, add it to the outside layers.


surfcowboy

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Re: Cowboy Foil Experiment Thread
« Reply #77 on: November 12, 2017, 06:56:42 PM »
Thank God you posted, I was beginning to think only U.K. Could see my posts. Lol

Yes, but just a layer of 4oz. You think resin only will be as stiff? I really don't want flex.

I have carbon at 0į and 45į for the outside with glass over that for sanding

TallDude

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Re: Cowboy Foil Experiment Thread
« Reply #78 on: November 12, 2017, 10:10:26 PM »
Just use resin glue for plywood to plywood. It comes in a powder. You just add a very little water. I needs 24 hrs to fully cure. It's what they actually make plywood out of. Put talcum powder on your clamps and anything else you don't want to get stuck to the excessive glue and drips.

Looking cool Cowboy!

supuk

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Re: Cowboy Foil Experiment Thread
« Reply #79 on: November 13, 2017, 12:09:44 AM »
Yes you want the fibers to be out as far as posable, you wonít have a problem with stiffness down the length of the fuz with that much ply it will be torsion that you may still get so put nearly all your cloth of the 45 on the fuz

surfcowboy

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Re: Cowboy Foil Experiment Thread
« Reply #80 on: November 13, 2017, 07:45:23 AM »
Cool, alright, I'll grab some of that stuff and use it and I can reorient my fabric as well. I hadn't thought that really I'm building a tube around a core more than anything.

blackeye

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Re: Cowboy Foil Experiment Thread
« Reply #81 on: November 13, 2017, 10:19:49 PM »
Thank God you posted, I was beginning to think only U.K. Could see my posts. Lol

Yes, but just a layer of 4oz. You think resin only will be as stiff? I really don't want flex.

I have carbon at 0į and 45į for the outside with glass over that for sanding

I'm a bodger compared to most on this site. The last tube I made is a grotesque mess. I came up with an inquistional device to free it from its mandrel and largely destroyed both pieces.

I did manage to help a friend rebuild his sailboat's rudder. I proposed a scheme, he ground out the damage, we applied carbon goodness, vac bagged, he sanded, and the pintles fit back on beautifully. Couldn't believe it. My reputation somewhat elevated.

2x4 oz layer on the inside of plywood layers will do about nothing. 1x4 on each outside a whole lot more with the same weight.

surfcowboy

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Re: Cowboy Foil Experiment Thread
« Reply #82 on: November 15, 2017, 06:07:04 PM »
Ok, got the resin glue. Gonna try to lam up this mast and get it shaped in the next week. This project is moving slooooow due to the early nights and me hating to sand in my garage so have to try to glue at night and sand on weekends.

I think I have my bagging setup decided on as well so probably do a test wing layup soon as well.

surfcowboy

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Re: Cowboy Foil Experiment Thread
« Reply #83 on: December 02, 2017, 11:18:53 AM »
Ok foil masters, this is a 7í5Ē Simmons shape. Iím thinking of dropping my UK mount in with the back of the boxes at 18Ē from tail.

Thatíll get me pretty close to flat (at least in shim distance) and maybe perfect when Iím paddling.

Thoughts?

Also, stay flat to bottom or try to flatten it in my sinking the front a bit more? Iím thinking flat and shin if I have to for simplicity.

What say guys?


supuk

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Re: Cowboy Foil Experiment Thread
« Reply #84 on: December 02, 2017, 01:18:51 PM »
I would go with flat with the bottom of the board and then use a shims to play with the angle.

surfcowboy

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Re: Cowboy Foil Experiment Thread
« Reply #85 on: December 02, 2017, 02:03:11 PM »
Thx, I have to say, this insert is bombproof. Iím really impressed. Itís got to be the strongest way to do this. The foam is crazy strong. Nothing like eps or regular surfboard poly.


surfcowboy

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Re: Cowboy Foil Experiment Thread
« Reply #86 on: December 11, 2017, 09:13:11 PM »
The lesson of this one? Slow and steady wins the race.

Got my mast pieces all cleaned up. Made one solid one and then used a trim router to make the others match. I made an extra one so I can keep the template and make others if this one works well.

Time to glue these up and grind em to shape.






supuk

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Re: Cowboy Foil Experiment Thread
« Reply #87 on: December 12, 2017, 11:41:29 AM »
Good job get on it and get it done! Canít belive more are not building there own!

surfcowboy

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Re: Cowboy Foil Experiment Thread
« Reply #88 on: December 12, 2017, 07:14:19 PM »
I'm feeling it now, especially now that I have a way to swap wings. It puts a lot less at stake and I feel like if the wing is funky I can just iterate til I get one I like.

I was considering 24" x 8" (61cm x 20cm) but now seeing all the giant wings I'm wondering if I should go wider? I do have a really thick profile (almost 4cm) 1.5 inches so I think it'll be fine at slow speed for me.

Think that's wide enough for learning on a flat wing? I guess I should just keep it simple and build it lol.

I don't think I can surf this weekend so hoping to shape and maybe start to laminate the wing.

clay

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Re: Cowboy Foil Experiment Thread
« Reply #89 on: December 12, 2017, 08:03:36 PM »
Cowboy, I have been appreciating your humor, I usually smile and have a good chuckle reading your posts.  :D

I'm digging your diy foil build, and taking studious notes so I can jump off the fence and start building some.
Aloha, I welcome and appreciate all responses of positivity and good feeling.

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