The steel Spaceframes have the same geometry, clearances, features, gearing options, handling and balance points as the titanium frames but at a lower cost, heavier weight and a different feel. Since steel is stiffer than titanium smaller tubes are used. The ride is similar to the ti frame (it has the Jones geometry after all) but it is different. It's steel and steel is good. The steel Spaceframe produces a ride that is stiffer than the titanium version but smoother than the Diamond steel model.
Construction: The frame is TIG welded 4130 chromoly with a butted down tube. The cable guides and bottle bosses are brazed on. The fork is 4130. The frame and fork are ED black and then powder coated for a durable finish.
Our blog has more frame information and some bikes that Jeff and our customers have built:
Why this bike? It's a high performance non-suspension bicycle... instead of designing the bike for XC-racing like so many unsuspended bikes. I wanted this bike to be better for technical and distance riding... Since this bike is not designed around a suspension fork I'm able to do much more to improve the handling. By designing the frame and fork together and considering the larger wheels I'm able to make a bike that rides very differently to a 'normal' rigid bike (be it 26 or 29er) with a short rake fork.
My bike has a slacker seat-tube and a shorter top-tube than 'normal' bikes... the head angle and rake with this wheel size (more rake, slacker head-tube-angle and bigger wheel) determines the trail which helps determine the handling. Slacker angles keep the rider's weight off the hands and makes the front end easy to lift; the center of gravity is moved back and down for more control, with less shock to the upper body, more traction under braking, and a bike that is much harder to endo. This bike feels quick but also has a laid back feel. It's the best handling bike I've designed.
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