A Photo & Discussion Forum for Wharram Design Enthusiasts

Tiki 38 Rudder Step

Do we need metal? Can a tiki 38 be built without screws? Dyneema and synthetic rigging. Carbon chainplates, etc,etc….

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Comment by Jozef De Roos on November 28, 2024 at 3:46am: i didn't use any screw until this very moment and almost all my panels are gone. So yes you can. I did make my chainplates completely in glass epoxy, you don't need carbon for that.

Comment by Blair R on December 1, 2024 at 11:48am: Panels? Do you have photo of your chain plates?

Comment by Jozef De Roos on December 2, 2024 at 11:38am: 20241202_104425.heic

with the panels I mean the ply wood panels. I hope the picture is clear.

Comment by Ian R on Saturday: I have dyneema rigging mostly. Yes the boats are sustained by glue. I have the designed bolts on my chainplates because of possible local rot and then glue failure. This can happen behind the scenes. My 31' has water traps, so beware local rot. If you are building a boat designed for "plastic" like Sven Yrvind, then fair enough, perhaps mechanical fixings can be mostly replaced by lamination.

When glueing up, screws are indispensable unless you are able to use a vacuum press, and then you still need some.

That's based on 40 years pro woodworking experience.

Comment by Jozef De Roos on Sunday: oh yes, you are completely right. offcourse I used temporaraly screws for that matter but did not left them behind.

Comment by Blair R on Monday: Thinking of using a modified low friction ring design made of high density poly for a thimble.
Ian R

What size dyneema are you using for your rigging?

Comment by Jozef De Roos on Tuesday: as I am not busy yet with this I did checked it out and see the bridle of the forstay needs the biggest breaking load of 3600 kg. If I check that it can be done with 6mm with a breaking load of 4328 kg. So I probably will use this 6 mm. Maybe other manufaturar will handle different figures.