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Carbon fibre rib for performance kayak

News International-French

15 Sep 2017

Imagine being able to pack up and go on any adventure and bring along your favourite kayak. Trak Kayaks, a company based in Calgary, Alberta, manufactures portable kayaks that are durable, lightweight and performance driven.

Carbon fibre rib for performance kayak

The company approached the CIC with their latest design, TRAK 2.0: the Ultimate Touring Kayak and asked us to assist with the interior rib design to reduce weight while still maintaining the performance level and existing price point for manufacturing.

The existing interior ribs were made of solid polyurethane and they were quite heavy; when the kayak was packed to travel, the bag was over the standard weight limit allowable for baggage on planes. The company also had a very tight cost target and strict structural performance requirements to support a 350 lb weight sitting on the kayak.

CIC started the project with a feasibility study to look at various concepts and alternative materials such as aluminum, fibreglass and carbon fibre to see which would be best suited. They then re-designed the rib to fit into Trak’s specifications using the selected carbon fibre material. This included ensuring that the design would interface seamlessly with existing connection points and also to simplify the geometry to maximize the area that the kayaker’s legs pass through. The coaming latch mechanism was also redesigned to save weight and reduce cost. They performed finite element analysis on the various designs concepts and the final design to ensure it passed the structural requirements.

Carbon fibre rib for performance kayak

After the final design was selected, CIC then prototyped the ribs in their shop using hand layup in a silicone mould to verify the design. The final product was a hollow carbon fibre rib with co-moulded 3D printed inserts to provide the geometry required to fasten the existing components to the inside of the kayak. The final weight was just under 50% of the existing ribs.

After the project was complete, TRAK started a Kickstarter campaign which resulted in 172 backers pledging over $600K to support the kayak. The first production is expected to start delivering by spring of 2018 with the lightweight carbon fibre ribs as a key component of the kayak structure.