Specialized patent gives glimpse of more vertically compliant Classics road bike with improved tire clearance... next-gen Roubaix, perhaps?
makes use of an ovalized section between the stem clamp and bar-end regions. In both cases, despite the use of very different materials, the idea is to increase vertical compliance to better isolate the rider from the smaller lumps and bumps on the trail.
A table within the patent document suggests the angled strut gives the bike frame 172% more deflection in the vertical plane, and 75% more deflection in the horizontal plane – compared to a conventional frame with a regular seat tube that meets the downtube at the bottom bracket. They determined those numbers with a test simulation wherein the conditions were similar to those specified for ISO 4210-6:2015-4.5, or “Fatigue test with vertical force”.
We approached Specialized for comment on this one, successfully securing the expected “No Comment” reply. Alas, we are left to hypothesize.. In that design, the actual seat tube is the spring, while a Future Shock housed within the top tube damps a claimed 30mm of travel.It’s unlikely the ‘Bicycle with Angled Strut’ described within Specialized’s latest patent document will go head-to-head against this latest Diverge STR.
The comfort-oriented but still road-racing Roubaix has long been a platform for Specialized to experiment with unique vertical compliance tech – everyone remembers Zertz, right? Its latest iteration has a gen 2 Future Shock up front, and a floating/flexing aero seatpost out back. But this cropped seat tube could take comfort under your butt to a new level.
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