TT02/TT02B CNC-grade Delrin 71T Spur Gear DTT2B071T by GPM  [DTT2B071T]

Technical Delrin spur for TT02 gearboxes

This 71-tooth, 42-pitch Delrin spur gear is supplied as a GPM aftermarket replacement for TAMIYA TT02 series chassis. Produced with attention to dimensional accuracy, the component provides a low-friction, wear-resistant option suitable for tuning gear mesh and drivetrain NVH reduction in TT02 and TT02B boxes.

Material and role: Delrin offers consistent sliding properties and adequate service life for RC drivetrain use. In TT02 applications the 71T spur transfers torque from the motor pinion into the gearbox and directly determines the effective final drive and mesh clearance requirements.

Installation notes: confirm true 42-pitch engagement with the selected pinion, set backlash using industry-standard shimming or spacing methods, and validate axial alignment to avoid gear binding. After installation perform a controlled break-in and recheck mesh clearances; polymer gears can alter seat under initial load. Supplied as one piece for single-gear replacement.

Tuning considerations: choosing Delrin reduces audible drivetrain noise and yields a smoother tooth engagement versus some harder materials, aiding precise gearing adjustments. Maintain minimal lubrication and use compatible pinions and bearing assemblies to preserve efficient operation.