Wharram Builders and Friends

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Éric Bouvéron
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  • Hong Kong
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Éric Bouvéron's Discussions

Tiki 21: Bowsprit length and thickness
4 Replies

Bonjour,Inspired by Ian Bamsey, I have found some carbon tube to make a bowsprit for an asymetric spinnaker.My question are about the lengthof the bowsprit after the stern. One meter? More? Andwhat…Continue

Started this discussion. Last reply by Éric Bouvéron Jan 16.

Solar panel with socket on the back
2 Replies

Bonjour,I am looking for a solar panel with the following features:50 watts, can resist to some reasonably walk, anti-slip, with rear mounting socket, and that can be stuck on the deck.I found a…Continue

Started this discussion. Last reply by Éric Bouvéron Jun 12, 2018.

Electric system, total beginner
9 Replies

Bonjour,I plan to put a battery and have it maintained with a solar panel.I understand that  + goes to + an - goes to -, but am I correct with that design? In fact, is it possible to plug the enegy…Continue

Started this discussion. Last reply by Andy Best-Dunkley May 23, 2018.

Sail cover and luff tube
8 Replies

Bonjour,Finaly we hoisted the sails on our Tiki 21, nice and easy, to my surprise -I am a pessimist- and after some photos put the main down. And then we tried to put it in the sail cover we had made…Continue

Started this discussion. Last reply by Ian Bamsey Apr 17, 2018.

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Latest Activity

Rod McLaren replied to Éric Bouvéron's discussion whish to get some advices on the rig. in the group Tiki 21
"Eric, I have the same experience on my Mana, only I have run out of space on my stays for the main mast. I will have to cut and re-splice before starting this season. I do  hope that the stretching will end soon."
May 12
Éric Bouvéron added 2 discussions to the group Tiki 21
May 11
Éric Bouvéron replied to Airton Ferreira Viegas's discussion Tiki 21 Hull Assembly
" I had the same question once... You don't remove them. Once everything is glued, you just cut the wires flush, and leave the rest in the wood and epoxy. Good luck with your construction! Éric"
Mar 25
Éric Bouvéron replied to Rune M. Christensen's discussion overloaded tiki21
"They cannot be heavier than the mast."
Feb 8
Éric Bouvéron replied to Rune M. Christensen's discussion overloaded tiki21
"Timo, no, I don't think the beams are 40 kg. As I said, I don't know the weight, but not that much."
Feb 8
Éric Bouvéron replied to Rune M. Christensen's discussion overloaded tiki21
"One marine plywood sheet, 6mm, is 12 kg. you need around one and half for the platform. My wooden mast, 25 cm longer then the plans, before epoxy coating, paint, blocks and cleats was 18 kg. Rudder I don't know, but my guess would be around 7…"
Feb 8
Éric Bouvéron commented on kim whitmyre's video


"That is exactly what I need to be abble to put a windvane on the back. Why not connect the blocks directly to the mainsail. Great inspiration, thanks."
Feb 7
Éric Bouvéron replied to Rune M. Christensen's discussion overloaded tiki21
Feb 6
Éric Bouvéron replied to Rune M. Christensen's discussion overloaded tiki21
Feb 6
Éric Bouvéron posted photos
Feb 5
Éric Bouvéron replied to Ian Bamsey's discussion Wharram Cornish Hui 2018
"Great video, as usual. Thanks, it gives positive spirit."
Feb 2
Éric Bouvéron replied to Jacob Sears's discussion Ocean Crossing Tiki 26
"Bonjour, That story:  http://wharrambuilders.ning.com/forum/topics/how-to-capsize-a-hinemoa gives Robert's post a strong confirmation. My English is far to be perfect but I understand that all happens with a hatch lost. I know a Tiki 26,…"
Jan 28
Éric Bouvéron replied to Éric Bouvéron's discussion Tiki 21: Bowsprit length and thickness
"Thank you again, Ian.  Best wishes,  Éric"
Jan 16
Ian Bamsey replied to Éric Bouvéron's discussion Tiki 21: Bowsprit length and thickness
"The key points for me are: 1. The over centre level and guy arrangement with rubber ball works really well ! See the blog 2. When cutting the sail make sure the luff length is right. It must fit between the mast head and bowsprit end allowing for…"
Jan 15
Éric Bouvéron replied to Éric Bouvéron's discussion Tiki 21: Bowsprit length and thickness
"Thank you very much Ian. I have already copy your forestay arrangment, I will go for the bowsprit as well. I will keep in touch when it' ready. Thanks again. Éric"
Jan 15
Ian Bamsey replied to Éric Bouvéron's discussion Tiki 21: Bowsprit length and thickness
"Hi Éric My bowsprit is 2.2m long and made from the lower section of a windsurfer mast. It's tapered from about 60mm to 50mm diameter and the tube wall is 2.5mm thick carbon. More details  here Ian"
Jan 15

Profile Information

I am:
A home builder, I want a Wharram
What boat (s) are you building or do you own?
J24. sold now.
Bought plans for a Tiki21
Hope to start this summer.
Country, City, and State?
Hong Kong
Looking to?
Tiki 21, to build here in Hong Kong, or most likely China.

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Éric Bouvéron's Blog

Tiki 21. Parts layout on the 15mm plywood sheet.


I started to loft yesterday, making templates for the 15mm sheet of the Tiki21.

I take careful mesurements, then tried to put everything on the 1200 x 2400 plywood sheet. Impossible. I cannot put everything. I finished with no space for one rudder.

Mesured again, and agin. Same results, can't find any mistake on my side.

So, question is: did some of you faced the same problem? I will if necessary find a piece of plywood for the remaining part, but I'd like to know… Continue

Posted on July 25, 2015 at 6:16am

Before I order West System, ask help for clarification


I am now on the way to order the resin, and found West System in Shenzhen,China.

I am on for a Tiki 21, and, if some have experience in the building of this model

1-Are quantities indicated in instructions correct (no need to have more of a articular item?)

2-It is asked for : 406A 0.275 kg Colloidal Silica and 409B 4.5kg Microspheres (for fillets) OR

407B 3.5kg Low Density Filler (for fillets).

Is the reference 407B replaces bothe 406A… Continue

Posted on July 15, 2015 at 3:19am — 1 Comment

About the Wood Triangular Section


All wood has been sourced now, but the "Triangular Section". Not able (capable?) to find it standard, (here in China, Shenzhen area )and since it is not in the form of a "square triangle", (BC² = AC² + AB²) I hesitate on what to order to mill it myself with my hand circular saw mounted on a table.

I am on a project for a Tiki 21, and the base of the wanted triangular section is 32mm, while the sides are 25mm. Or, "Imperialy speaking" base 1 1/4" and sides 1". (I just…


Posted on July 7, 2015 at 2:57am

Epoxy coating


Plywood is ordered and will arrive soon. Epoxy, I'm still testing. However, I have two questions.

-When you coat plywood with epoxy, is it acceptable to put the second coat before the first is totally cured, without sanding, or is it better to wait that the first coat is totally dry, sand and put the second coat?

-I tried an epoxy yesterday. The seller made the mixture on a scale. I took two pieces of wood, dry. I put some epoxy mixture on both pieces, tied them and made… Continue

Posted on June 29, 2015 at 10:40pm — 8 Comments

Comment Wall (3 comments)

At 11:32am on April 29, 2015, sailorjoy said…

thank you for the reference

At 7:23pm on July 16, 2015, Blanc Jean-Paul said…
Thanks a lot
J'ai commencé mon petit catamaran sans avoir d'expérience de la résine. Et j'ai eu quelques hésitations et la peur de rater. Mais au final aucun problème sérieux. Donc, vas y fonce.
At 8:33am on April 27, 2018, john james said…

Hey Eric thank you so much for the tip on window installation that was really helpful both systems are so sanitary it was a bit shaming comparing my technique to how they performed the job. I wish I'd been watching these two websites earlier I would've ended up with a much nicer building experience

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