The Koursa is built in a two-piece monocoque process. The top half is what we like to call the MonoArc Leaf Spring design. Or, MonoArc for short. Borrowing from suspension and architectural principles, this portion of the frame features an elongated and flattened top-tube and seat-stay. They are assembled in one-piece and precision tuned for compliance using a blend of Toray T700 and T500 high and mid-modulus carbon fiber.
A leaf spring cannot function without a solid bracing element, that's why the MonoArc is supported by the lower portion of the frame. This half is also built using a one-piece monocoque process with full Toray T700 unidirectional carbon fiber. Featuring a bowed and flattened down-tube for torsional stiffness and 1.25" tapered head-tube for rigidity. These pieces are then mated to the stiffness-tuned chainstays and PressFit 30 oversized bottom-bracket. The end result is a ride that is as smooth as it is fast!
When we set out to design a Sportif Road model, we didn’t want to give up performance handling in exchange for all day comfort. We felt like our riders deserve both! Our Koursa is designed around a taller, more upright and comfortable riding position but retains its racey steering angles and tighter wheelbase. Other “endurance” bikes on the market are designed with slackened steering angles and wide wheelbases. Those “other” bikes overcompensate and the end result are bikes that are sluggish to get up to speed and around the corners. The Koursa’s race-oriented sportif geometry and MonoArc are designed to keep you comfortable mile after mile without giving up any of its get up and go!
Our Koursa frame's prime ingredient is the venerable Toray T700 high-modulus carbon fiber. It features high tensile strength that allows for lower weights for an overall well balanced material. It is often said that T700 is the highest grade of carbon fiber that could be used as the sole material in a complete frameset design due to its light weight, strength and durability. We also utilize Toray T500, a mid-modulus carbon fiber known for its balanced composite properties, high quality, consistency and reliability. It can be found in the layup schedule along with the T700 on the MonoArc design of our Koursa model. We’ve used its natural dampening properties to give the Koursa its mile-conquering smoothness.
|Frame Material||Torayca T700 Carbon Fiber|
|Headset||Integrated 1-1/8" to 1-1/4"|
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