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(c) COBRA International Co.,Ltd
24.05.2022

New Report by COBRA details Innovations in Windsurfing

Cobra International has launched an innovation report highlighting its key composite manufacturing innovations that have reshaped the Windsurfing industry.
Having first begun building windsurf boards in 1978, Cobra continues to drive technology development in the sport and 44 years later, manufactures approximately 80% of the world’s composite windsurf boards. Manufacturing for leading brands such as Fanatic, Starboard, Naish, RRD, JP and Quatro Goya, Cobra has consistently evolved and improved the construction and finishes of the boards that it builds, balancing stiffness, comfort, weight, strength, durability, and aesthetics.
Cobra’s report details key manufacturing innovations including:

Cobra International has launched an innovation report highlighting its key composite manufacturing innovations that have reshaped the Windsurfing industry.
Having first begun building windsurf boards in 1978, Cobra continues to drive technology development in the sport and 44 years later, manufactures approximately 80% of the world’s composite windsurf boards. Manufacturing for leading brands such as Fanatic, Starboard, Naish, RRD, JP and Quatro Goya, Cobra has consistently evolved and improved the construction and finishes of the boards that it builds, balancing stiffness, comfort, weight, strength, durability, and aesthetics.
Cobra’s report details key manufacturing innovations including:

  • The introduction of its innovative vacuum moulding technique that Cobra perfected just as the popularity of the sport exploded.
  • The manufacture of its own composite EPS forming moulds producing strong, watertight cores that are ready to use in production directly from the mould.
  • The mass production of sandwich boards with thermoformed PVC foam wrapped around the rails, increasing the board’s strength whilst keeping weight to a minimum.
  • Seamless rail construction
  • High-volume manufacturing capacity optimized for the finest prepreg carbon foils satisfying the current demand for windsurf foiling equipment
  • Development programs with on of the world’s leading carbon fibre fabric producers to create ever lighter biaxial fabrics.

“As we set aside time during the pandemic to upskill, innovate, and look to the future, it was also important that we referred back to our key technology successes. This got us thinking about so many of our developments which led us to create this innovation report. Customers can draw great confidence from the fact that the Cobra team is always working on tomorrow’s next generation product as well as building exceptional quality into each of today’s boards.” Bruce Wylie, CCO, Cobra International

More information:
COBRA carbon fibers biaxial
Source:

COBRA International Co.,Ltd / 100 % Marketing

Sonntag Fins Switch to Sicomin’s GreenPoxy® 33 Bio Resin (c) Sicomin
Ben vd Steen Flying high
30.11.2020

Sonntag Fins Switch to Sicomin’s GreenPoxy® 33 Bio Resin

Sicomin’s latest marine collaboration with Sonntag Fins sees its industry leading GreenPoxy® 33 bio-based epoxy resin used for custom carbon fibre windsurf fins - combining speed, fatigue performance and sustainability for some of the fastest sailors afloat.

Targeted at windsurf slalom sailors, racers and speed sailors, each Sonntag fin is a custom made product, tailored specifically to the user based on a discussion about riding style, physical size and weight, as well as how the rider likes to load the fin whilst sailing.  This attention to detail and bespoke manufacturing places a huge importance on the performance and consistency of the raw materials used, with all new materials having to be validated in production, on the test rig in the lab, and on the water by the team riders.

Sicomin’s latest marine collaboration with Sonntag Fins sees its industry leading GreenPoxy® 33 bio-based epoxy resin used for custom carbon fibre windsurf fins - combining speed, fatigue performance and sustainability for some of the fastest sailors afloat.

Targeted at windsurf slalom sailors, racers and speed sailors, each Sonntag fin is a custom made product, tailored specifically to the user based on a discussion about riding style, physical size and weight, as well as how the rider likes to load the fin whilst sailing.  This attention to detail and bespoke manufacturing places a huge importance on the performance and consistency of the raw materials used, with all new materials having to be validated in production, on the test rig in the lab, and on the water by the team riders.

With this in mind, Sonntag Fins approached Time Out Composite, Sicomin’s German distributor,  looking for a new resin system that could reduce cycle times and improve manufacturing output.  Bio-based systems were discussed, but the first product used by Sonntag was Sicomin’s SR1280 laminating system which delivered immediate results, enabling shorter cure cycles, and exceeding all of the previous mechanical test targets.

In 2020, Sonntag and Time Out Composite revisited the topic of a more sustainable epoxy resin system. It was the perfect time for Sonntag Fins, with their new unique bright green UV resistant outer finish, to go green on the inside too with Sicomin’s GreenPoxy® 33 resin.

Test fins were produced with the new material performing well in production trials. Pure resin samples were also tested and post-cured at 140 ̊C, with the new GreenPoxy® 33 samples showing significantly higher elongation at maximum resistance, meaning the cured epoxy was less brittle and susceptible to damage should a customer’s fin meet a rock. With mechanical properties improved, Sonntag switched production to GreenPoxy® 33 in August 2020.

Sonntag fins are manufactured in CNC machined aluminium moulds using GreenPoxy® 33 and a bespoke lay-up of woven, stitched biaxial and heat-set unidirectional carbon fibre fabrics in four steps:
• The first step in the moulding process is the application of Sonntag’s unique green in-mould coating.
• Next, the individual fabric plies, cut using precisely machined templates, are placed into the mould and then wet-out with the low viscosity epoxy. With the laminate stack complete, the mould is closed and loaded into a heated press for around 2 hours to consolidate and cure the fin.
• After curing, the demoulded fins are tempered in an oven at 140 ̊C, then only a light sanding is required to create the final surface roughness for optimum flow characteristics in the water.
• Finally, the fins are cut to the required length and the base adapter is molded to the epoxy-carbon blade in a specific mould.
With each fin being optimized for its rider, it is critical that each piece produced will bend and twist in exactly the way it has been designed to do so, providing the rider with exactly the feel and feedback they want for their board and fin. Each Sonntag fin is tested on a unique CNC controlled servo and stepper motor driven test bench that Joerg has developed, building a database of test results that not only ensures the products perform as designed but also validating the consistency of the manufacturing process and raw materials.
“We produce high-performance windsurfing fins that need to accommodate significant loads during sailing. Fins need to combine flexibility with extremely high torsion stiffness that places high interlaminar shear forces on the resin, especially in our softer fins.” commented Joerg Sonntag, MD, Sonntag Fins. “A key requirement for us is a resin that maintains its mechanical properties for many years, and this is where the Sicomin systems deliver”

COBRA provides high-quality mass production for ARE Tahiti’s new composite canoes (c) COBRA
23.11.2020

COBRA provides high-quality mass production for ARE Tahiti’s new composite canoes

Cobra International, Chonburi, Thailand: COBRA International, one of the world’s largest OEM manufacturers of composite goods for Water Sports, Automotive, Marine and Civil Engineering, is pleased to confirm the shipment of its first 36 composite canoes to ARE Tahiti.

COBRA has collaborated with leading outrigger canoe brand ARE Tahiti to mass produce its new OC-1 canoe, ‘Mana’. Designed by former professional windsurfer Baptiste Gossein  (JP Australia and Neil Pryde), ‘Mana’ features a closed deck on which the paddler sits on top of the hull. Available in two models; a hybrid version weighing 12kg, using an 80:20 mix of E-glass and carbon fibre reinforcement fabrics, and the PRO model – a weight optimized, ultra-light, full carbon version that weighs as little as 9kg.   

“We required the best in composite construction for both models, a stunning final finish and a build rate that could keep up with our growing order book”, comments Baptiste Gossein.

Cobra International, Chonburi, Thailand: COBRA International, one of the world’s largest OEM manufacturers of composite goods for Water Sports, Automotive, Marine and Civil Engineering, is pleased to confirm the shipment of its first 36 composite canoes to ARE Tahiti.

COBRA has collaborated with leading outrigger canoe brand ARE Tahiti to mass produce its new OC-1 canoe, ‘Mana’. Designed by former professional windsurfer Baptiste Gossein  (JP Australia and Neil Pryde), ‘Mana’ features a closed deck on which the paddler sits on top of the hull. Available in two models; a hybrid version weighing 12kg, using an 80:20 mix of E-glass and carbon fibre reinforcement fabrics, and the PRO model – a weight optimized, ultra-light, full carbon version that weighs as little as 9kg.   

“We required the best in composite construction for both models, a stunning final finish and a build rate that could keep up with our growing order book”, comments Baptiste Gossein.

As with all of COBRA’s watersports’ projects, a perfect master model formed the basis of the mass production tooling and two sets of composite hull tooling were taken from the master plug allowing a build rate of up to 50 OC-1 canoes per month.

For the lay-up and construction process, COBRA’s high-performance PVC foam sandwich windsurf board construction provided a solid starting point.  Having selected vacuum consolidated epoxy wet layup for the mix of woven and stitched biaxial reinforcements, COBRA was able to build down to the customer’s weight target with the absolute minimum of waste and additional consumables.  Top and bottom sections of the hull were moulded separately then bonded together, with the smaller outrigger hull – known as the ‘ama’ – produced in the same way.  Prepreg carbon fibre and in-house split mould tooling was also used for the two ‘Iakos’ - the two cross beams that join the ama to the main hull. 

An in-mould applied finish coat was then used for the hybrid OC-1 while the PRO carbon fibre model benefits from COBRA’s ultra-light paint system.

“COBRA is able to provide mass production capability and rapid new model turnaround, as well as delivering consistently high quality. We are delighted with the first COBRA built OC-1s and have received exceptionally positive feedback from both customers and racers” comments Baptiste Gossein.

The next ARE project to enter mass production at COBRA will be the V-1 canoe. Similar to the OC-1 but an open boat that the paddler sits inside, the V-1 will have no rudder or steering system, requiring more finesse to manage underway.

“The OC-1 outrigger canoe is a superb example of our customer focused approach to production process development.  By working closely with Baptiste and the ARE team, COBRA is able to provide mass production capability and a rapid new model turnaround, as well as delivering consistently high quality.  This is a sector in which we expect to see significant expansion over the next few years”, comments Danu Chotikapanich, CEO, COBRA International.

(c) Cobra International
12.11.2019

COBRA International announces manufacturing partnership with Skeeta Foiling Craft

COBRA International, one of the world’s largest OEM manufacturers of composite products, is proud to announce its partnership with Skeeta Foiling Craft to build the new range of hydro foiling dinghies. Skeeta Foiling Craft, founded by father and son team Jim and David French, have been refining their unique concept for a simple, accessible hydro foiling dinghy in Australia since 2015. In collaboration with Dr Ian Ward’s Glide Free hydrofoil technology, Skeeta Foiling Craftdeveloped the 3.66m Skeeta and 2.9m Nikki dinghies that are available in both foiling and displacement sailing configurations, maximising the thrill of foiling in a versatile package that the whole family can use.

COBRA International, one of the world’s largest OEM manufacturers of composite products, is proud to announce its partnership with Skeeta Foiling Craft to build the new range of hydro foiling dinghies. Skeeta Foiling Craft, founded by father and son team Jim and David French, have been refining their unique concept for a simple, accessible hydro foiling dinghy in Australia since 2015. In collaboration with Dr Ian Ward’s Glide Free hydrofoil technology, Skeeta Foiling Craftdeveloped the 3.66m Skeeta and 2.9m Nikki dinghies that are available in both foiling and displacement sailing configurations, maximising the thrill of foiling in a versatile package that the whole family can use.

Jim French was determined to build the Skeeta hull using an expanded polystyrene (EPS) foam core and the single shot closed mould epoxy lamination process pioneered by the windsurf board market, making COBRA International the perfect build partner for series production. Skeeta Foiling Craft first contacted COBRA back in early 2016, when the company started developing initial hull production materials and processes that could match their targets for lightweight, durable and cost-effective construction.

More information:
COBRA Skeeta
Source:

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