The 56-tooth Delrin spur, model V3R-0856/V2, is offered as a replacement for the Kyosho V One RRR gearbox. Its polymer construction gives a lower-friction tooth surface that suits detailed on-road setup and smoother gear engagement.
Material and role: With reduced friction at the mesh, a Delrin spur can alter motor loading and drivetrain feel. Consider this part part of setup changes to refine backlash and engagement rather than as a simple power upgrade.
Installation notes: Remove the radio tray or access cover on the V One RRR, remove the factory spur using the original screws, install the Delrin 56T in the same orientation, and refit the factory hardware. Carefully set gear mesh to avoid tight spots, then rotate the drivetrain by hand to check for smooth operation before use.
Tuning considerations: Replacing a metal spur with Delrin affects pinion selection and motor response. After fitting, recheck alignment, inspect for runout, and monitor tooth wear in early runs while making incremental setup adjustments.
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