Aluminum is still very much a cutting edge material. People are still finding new and better ways to work it, and Colnago is very much finding new life in this alloy. They’re always watching over what could yield a great-riding bike. When they saw how aluminum shaping has improved, they were ecstatic. They could build a frameset that rides like a Colnago at an incredible value. That’s when the germ of the Strada SL appeared. And they saw it through to the creation of something special. The key is the advance in shaping techniques: specifically, hydroforming.
Hydroforming provides Colnago the ability to more precisely shape the frame tubes. This advanced shaping means they can better control the ride qualities. No longer is aluminum unacceptably harsh. Now, they can smooth out the ride, keeping the bike light and lively, while still comfortable and stable. The goal is to give steel-bike comfort for long riding with modern stiffness for greater efficiency. To this end, the downtube is nearly hexagonal, while the top tube is flattened in front and evolving into a cone by the seat tube. And the seat tube itself starts round at the top and transforms into a near rectangle at the bottom: more material to resist lateral forces. The stays are relatively small in diameter, but the squared-off shape keeps lateral movement to a minimum with still some vertical give. The flattened top tube keeps with the theme of lateral stiffness and vertical compliance.
The geometry is very much based on their race geometry. As such, it’s nearly identical to the C60, their flagship road bike.
The fork is the one you’ve come to expect from Colnago. It’s a straight blade, and has a tapered 1 1/8” to 1 ¼” steerer. The tips are machined, cold-forged aluminum dropouts for durability. It is joined to the frame with Colnago's proprietary headset for durability and crash protection.
The frameset also comes with a Colnago carbon-fiber 31.6mm seat post and the frame clamp. The post is both light and compliant. The bottom bracket is English-threaded.
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