Wharram Builders and Friends
A Photo & Discussion Forum for Wharram Design Enthusiasts
making the most of the Tiki 31
Latest Activity: Jun 14
Started by Thom delForge. Last reply by Pieter Nov 13, 2017.
Started by Pieter. Last reply by Pieter Aug 13, 2017.
Started by Thom delForge. Last reply by laurent Oct 5, 2014.
And some more here
I know it has been a while...but I am still alive and still trying to finish the #@#^!?# boat! I am trying to figure out and mark the waterline on the hulls but there are no information or measurments in the plans. I have seen the idea with the transparent hose pipe in various blogs but from what I can understand you need some numbers provided by the designer to start with. I thought that someone of would have an idea on how to do it or, even better, could provide me with some measuments from a finished Tiki 31. Thanks in advance,
I will try and post later today or tomorrow. If I were you I would bring your line up about 6" taller than the actual water line. I will be raising mine next month.
I am looking forward to reading your comments, thanks Thom.
Manos : ref waterline marking I have sketched mine out on one of the hulls with a laser level having firstly done proportional measurements from photos of other Tiki 31s, but mostly of Phil le Maitre's boat which I knew reasonably well, which was built to plans with similar material and loading. Water levels (ie the builder's tube level from the old days) are are alright but a lot more work to do this with.
Don't worry about how long it has taken to build your boat, you haven't a chance of beating my record (also of roadmiles covered and seapassages before launch)!
I don't know if you have estimated the weight of your hulls but I guess they will be above the estimated weight of the hulls as stated on the plans when I bought them (think circa 1989). I think that was underestimated, but maybe Wharrams have updated the weight since then. But I guess fir-ply would be lighter than my hulls for example.
I think I would use that if I had another life to build another boat in my formerly non-existent spare time....rough, light, with a sell by date.
Laser levels are useful! With proportional measurements from photos of boats built from similar material.
Thanks for the reply. I am also now focusing on gathering information from photos of other TIKI 31s. I have turned the second hull upside down and I have almost finished glassing it. I then intend to turn it straight again, make sure it is level and draw the waterline in approximation, taking into account the larger weight of the hulls as you also have noticed. I believe mine must be around 500 kg each (added material for enclosing the central cockpits haven't added more than 50-60 kg to the weight of each hull)......As for the record of road miles...I am not sure who is holding it, but I hope we both brake it on sea miles eventually!
By the way, your boat is beautiful!
Hello Manos, ref weights I am just going from the feel of it, as I am used to shifting big oak beams and small/medium wooden structures which has been my worklife scenario for a long time. I have a precise pivot point I know well on the hulls, it's actually not exactly where you think it would be, a bit further back, which seems exactly right from a sailing point of view. I have left the yard trailer I made in Guernsey and it now has a second life for a ladies rowing skiff on the sea there.
Shifting the hulls has always been a question of this. I have had 5 different worksites up to "the marina" now which is the sixth! and final I hope. It's just the platform to do now, and that's going to be minimal and light.
I made circular "wheels" for turning the hulls with shutterply and 150mm thick pine sandwiched between. I turned the hulls singlehanded with two of those and a winch. I had to dig a hole in the ground to swing 'em.
Nothing's going to stop me now! And you too I think. Bon courage!
As for the mistery of mastrake, i can tell you that besides causing weatherhelm a certain amount of mastrake wil also make you tack easier. traditionally the aft mast has slightly more rake than the fore mast. This is also a matter of personal preference. So it's something to experiment with.
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