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The Century-Rocket frame shown “fuses” the “old-school look” of vintage 1970s small-diameter tubular members with modern-era Sportster motors (1986-2003). This frame is constructed of rugged, 0.120”- wall, AISI 1020 DOM tubing, having 1” frame rails with a 1-1/2” backbone and seat post. Also features a 5” forward x 2” up-stretch x 38-degree rake. This configuration takes a +4 over fork assembly. The frames are set up for acceptance of chain-driven 130mm tires
All frame models are TIG-welded in our new patent-pending, adjustable/rotisserie-style jig. The frame is completely welded, stress-relieved, and cooled without removal from this jig – which minimizes distortion and maintains accuracy. (TBW has recently made this novel, adjustable jig commercially available to any frame builder or custom bike builder.)
RetroFrames are computer-engineered in SolidWorks CADsoftware, followed by a corresponding stress/strain-field finite-element-analysis (FEA) performed in COSMOSWorks. FEA graphically depicts the field distributions throughout the frame design – enhancing TBW’s quality assurance goal geared toward top road performance and safety.
