Epoxy, stringerless design flex pattern on trend with current surfboard market
Surfersvillage Global Surf News, 11 September, 2017 - Australia's Joistik Surfboards has found their Karboload carbon wrap board designs are becoming very popular. Karboload is a unique epoxy layup on stringer-less EPS foam that utilities Y-Flex technology.
With Y-flex, the central carbon bottom strip splits at the leading edge of the side fins and flares out in a “Y” shape towards the rail (at specific measurements, depending primarily on the fin setup). The Y-Flex bottom harnesses the energy through the turn and carve like other bottom carbon strips, but where it differentiates and excels further is by additionally channeling the linear flex energy along the bottom, to transverse forces and flex through the tail third of the board.
The energy feedback, acceleration, speed and liveliness through not only the turn, but more importantly the turn transitions (a result of the differing pressures between leading and back foot) are immediately noticeable and still allow a parabolic, uniform and tapered release of the energy through the more flexible tail.
"We balance this with various options on the deck, such as single carbon strips or half deck strips (or none)," said Nick Blair. "The most popular option however are the dual carbon tape strips on the deck, positioned at a specific measurement apart (under the heels and balls of the feet), parallel and running from nose to tail. These dual carbon deck strips optimise torsional twist by controlling and utilizing the energy harnessed from torsional twisting along the length of the board."
"Named Parallel Performance, they were pioneered and trademarked by surfer and inventor Troy Clutton, who also brought C-Drive fins to the market. Importantly too, the carbon is utilised on the outer layers of deck and bottom with the glass laminate- so that it is truly in tension when the surfboard flexes (in internal carbon laminates used by some technologies, the amount of tension and therefore energy feedback, decreases parabolically towards the centre of the core as the surfboard flexes). We are able to customise and manipulate the overall flex through various glass layup and tape options, to optimize flex for each surfer in specific conditions.