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Like the Rock Shox SID, Cannondale's Scalpel has enjoyed a particularly successful run on the race circuit but was also rather long in the tooth and somewhat overdue for replacement. The new Cannondale Scalpel Carbon 100 answers that call with an all-new frame and an evolved rear suspension design.The new 'Zero Pivot Technology' design is somewhat of a misnomer as the shock is still actuated with a pivot-equipped linkage. Cannondale has managed to eliminate the dropout pivot altogether, though, by injecting the new carbon seat stay assembly with some carefully engineered flex through its length. Travel has now increased to a more capable 100mm courtesy of a longer flex section in the carbon chain stays, yet the chain stay length itself has actually dropped by 10mm for a tighter and more responsive rear end.
Cannondale says the new frame is not only 10% lighter than last year's already-light version, but also 15% stiffer. The improvement in rigidity is in some measure due to the new pseudo-pivotless construction, but a new carbon front triangle does its part as well. Cannondale adapted the same construction technology used in the road-going SystemSix for the new Scalpel Carbon 100, which incorporates a monocoque top tube/head tube/down tube section co-molded to an aluminum seat tube section.
A woven carbon fiber top sheet is nixed in favor of unidirectional plies exclusively, and all of the tubes are oversized in the usual Cannondale fashion. The down tube also sports the company's 'Power Pyramid' tapered shaping for better bottom bracket and torsional rigidity. Thanks to the frame's newfound rigidity, Cannondale says it was able to slacken the head tube angle slightly to 69.5° to yield a more stable personality without sacrificing overall responsiveness. Based on its in-house bottom bracket deflection tests, Cannondale also claims best-in-class stiffness-to-weight ratios for the new model.
