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Design & Illustration

Thule/2

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Thule/2

Plans, Thule/2 - 114 EUR Purchase

A medium volume kayak, with ample room for knees, feet and gear, and designed primarily for larger persons, it has nevertheless become a favorite also among smaller paddlers.

High stability (initial and secondary) means that inexperienced paddlers quickly learn to handle the kayak in waves and that skilled paddlers can keep going comfortably when the weather refuses to cooperate.

Thule/3 – kayak for two paddlers, needing lots of storage volume and capacity, or for three paddlers. A special order from a Danish club led to a modified Thule/2: the same lines but longer (656 cm) and beamier (63 cm) and with a large hatch (40x80 cm) between the cockpits, or a third cockpit. Load capacity increased to 255 kg and the draft to 13,5 cm. To build this version, order the standard Thule/2 and make a note in the ordering form that you want the Thule/3. Same price.Alternative cockpit plans Thule3

Alternative cockpits options for för Thule/3

Images

Thule/2 av Bengt Hasselberg 2007Thule/2 av Erik Frantzen 2009Thule/2 av Erik Frantzen 2009Thule/2 av Erik Frantzen 2009Thule/2 av Ralph Merriman 2008Thule/2 av Ralph Merriman 2008Thule/2 – Pontus ErikssonThule/2 – Pontus ErikssonBo Bensby i Vordingborg, Danmark med ny Thule/3Provtur i Thule/3

Particulars

Thule/2 lines

Length¹ 637/607 cm (overall/WL)
Beam 62/59 cm (overall/WL)
Draft 11 cm
Cockpit¹ 80x40 cm
Height¹ 29.5/22.5 cm (in front of/behind the cockpit)
Weight² 18-23 kg
Load capacity 200 kg/512 litre
Speed³ 8.6/12.2 km/h
Prismatic coefficient 0.59
Wetted surface 2.88 m²
Drag⁴ 2/3.31 kp
Stability⁵ 4/5 (initial/secondary stability)
Intended use Expedition and touring, coastal and open sea. Day tours and exercise.

* These dimensions can be adapted to suit personal needs or wishes.
** Depending on type of wood, equipment, care with epoxy usage, sanding etc. etc.
*** The speed numbers are based on mathematical standard formulas (175 lb paddler + 30 lb carco weight) and corrected from the kayaks actual performance om trials, on tours and in races.
⁴ Calculated resistance in 4 and 5 knots (at nominal load capacity).
⁵ Initial stability and secondary stability on a subjective scale, where 1 is very tippy and 5 is very stable.

Plans

The plan sheets contain the information needed to build the kayak/canoe. Station molds, stems and construction details are full scale. For kayaks the recommended cockpit size is shown half scale with offsets for a full scale drawing and advice on altering the size. On the plans you will also find advice on how to shorten or lengthen the craft. Lines and construction drawings are in metric scale 1:10.

Thule/2, plans

The illustrated step-by-step building manual is in Swedish only, but it is available online in English: it covers all steps in detail and will guide first-time builders through the project.

Plans, Thule/2 - 114 EUR Purchase

Minimum window dimensions to get your kayak out from the workshop:
62x35cm

Comments

Hej Björn!

Om man vill bygga en delbar Thule/3 som också går att göra om till en Thule/2, vore det inte lika bra att utgå från Thule/2's spantmall i mitten och bara reproducera den för hela mittsektionen? Kajaker blir kanske lite mindre stabil och lastbar men borde också bli lite mer lättdriven?

Vänliga hälsningar

Per-Ivar

Funktionellt bör det inte vara något problem. Mittsektionen blir då en förlängningsenhet, en extra sittbrunnspod. Men helt fritt från nackdelar är det såklart inte: mina skrov alltid är mjukt rundade för att störa vattenströmningen så lite som möjligt – med en rak (eller nästan rak) mittbit får du diskontinuiteter i linjerna som kommer att öka friktionsmotståndet. Samtidigt innebär den ökade vikten av de extra skotten och kopplingskonstruktionen att kajaken blir besvärligare att hantera.

Delbara kajaker har byggts flera gånger, t ex: Rune Eurenius med en havsracer, Dan Caouette med en Black Pearl och Daniel Norlén med en Njord.