Endorphin trimaran

A small trimaran. Motor and sailboat.
A 3 h.p. motor.
A bi-plane sail rig; consisting of 2 un-stayed carbon masts, with wind surfer sails.
Uses about one and a half litres of petrol per hour.
Made from 4 m.m. plywood on stringers. Stainless staples.
with some light fibreglass.
Carbon fibre over 10 m.m. ply ; for bracket/ clamp areas.
Beams are old aluminium masts.
Foot steer.
One person.
Made the hulls on the car garage over the winter.
Sailed/motored this boat all summer. 5 weeks. Out nearly ever day.
The really pleasing part is that it performs better than I had hoped!!
Sails really well downwind. Bow is fairly full; so as not to bury down a 3 to 4 foot wave.
And upwind, with the motor and a centre board; it is great.
The windward sail is not fully sheeted in. Works more like a gib for the leeward sail. Although when you get a gust you sheet the windward sail in hard; this flattens the boat.
Have attached runners under hulls, so that Endorphin can be run up onto beaches.
Easy to rig.
Easy to launch and retrieve onto dolly.
Materials list:
5 sheets of 4 m.m. ply.
One sheet of 10 m.m. ply.
Some strips of solid timber- I used Macracarpa; a Cyprus pine.
Some 200 gram fibre-glass
and a small amount of carbon.
10 litres of Epoxy resin and some filler powder.
Some paint.
Weight: About 120 kg . All up
Hull, rig, motor, foils.

[@arturomarcelolescano3856]

one of the most beautiful small trimaran, i ve seen !!! congratulations

[@mikexhotmail]

Wow. I have the same idea of using 2 windsurf sails sailboat. The goal is to make moving the boat around easier also reduce heel effect.. So great to know that I am not alone Thank you very very much for sharing this!

[@LoanwordEggcorn]

There are many Australian multihulls in particular with only two front sails, often windsurfer style rigs. Agree it should be simple to operate and keep the center of effort and heeling forces lower.

[@tentmaran]

Love it, no nonsense, simple and effective. 👍👍

[@FedericoLucchi]

Very beautiful build and ideas!

[@bradcole4693]

Interesting, picklefork.

[@peacekeepermoe]

That's a beautiful boat :)

[@RobbsHomemadeLife]

what a very practical and well thought out design, I watched all 3 videos and subscribed, hope you do more.

[@russellmaxwell8166]

+Robb's Homemade Life. Hello Rob, I have had such fun in this wee boat. Done lots of sea miles now. Just love motor-sailing in her. The wing on the stern this summer has been great.

[@cmck3267]

Looks like a bit of South Island ingenuity!

[@javiervillarreal4432]

Hola russel me encanta tu diseño y te felicito...vos tenes planos del trimaran ?gracias...soy de argentina

[@williamfraser]

Great looking boat, well done. Looking forward to some sailing videos! Length? Beam?

[@russellmaxwell8166]

William Fraser Thanks. I have had a lot of fun in Endorphin this summer. Hope to get some video from another boat soon.

[@samualwhittemore228]

When are you going to incorporate foils on the amas and rudder like Kettermans trifoiler? Big SMILES would scream from your face! Ha Ha

[@user-rs7hc6sd7b]

А почему центральный корпус плоскодонный, а не округлый как у поплавков?

[@danjortuxtla7809]

How much by the planes?