TAMIYA TT02/TT02B 42-Pitch Delrin Spur Gear 69T Upgrade - DTT2B069T by GPM  [DTT2B069T]

Technical Overview: 42 Pitch Delrin 69T Spur

This Delrin spur is an aftermarket replacement built for TAMIYA TT02 and TT02B platforms. Identified by DTT2B069T, it features a standard 42 pitch tooth form and 69 teeth to match 42 pitch pinions used in these kits.

Delrin is chosen for its low surface friction and stable dimensions under typical model loads, which helps preserve consistent gear mesh. The component is intended for gearbox or motor-mesh installation and should be checked periodically during maintenance cycles.

Installation guidance: set an initial mesh with the existing pinion, confirm axial alignment, and ensure the larger 69T face clears adjacent chassis parts. Use correct tools and take care not to compress or distort the Delrin when securing the gear.

Tuning note: changing spur tooth count directly alters the TT02 final drive ratio; increasing teeth favors top speed while fewer teeth favour acceleration. Choose gear steps to suit your track and battery configuration.