T3-01 39T Main Spur Gear Upgrade for Tamiya - Factory Pro FP-O-AP0007  [FP-O-AP0007]

Factory Pro FP-O-AP0007 Main Spur Gear 39T (for O-AP0004)
Price:
CAD$11.36
Brand:
Factory Pro
Model:
FP-O-AP0007
Condition:
Brand New
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39T main spur for T3-01 drivetrains

This Factory Pro FP-O-AP0007 main spur gear is specified for compatibility with O-AP0004 and Tamiya T3-01 chassis applications. As a 39T main spur, it carries rotation from the pinion into the gearbox and directly affects final gear ratio and on-track behaviour.

Installation notes: fit the spur onto the gearbox input plate following your chassis service manual, inspect pinion-to-spur mesh over a full rotation to avoid tight spots, and torque set screws to the gearbox maker's recommendations. After installation, confirm the drivetrain spins freely and clear any debris before testing.

Tuning role: altering spur tooth count shifts the final ratio when matched to different pinions, giving a predictable way to trade top speed for acceleration depending on track layout or motor characteristics.

Will this fit the T3-01 gearbox that uses O-AP0004?

The part is listed for compatibility with O-AP0004 and Tamiya T3-01 related setups. Check spline count and mounting face against your gearbox before final assembly to confirm fitment.

How should I check pinion-to-spur mesh when installing?

Rotate the drivetrain by hand while observing the mesh across a full turn, feel for tight spots, and adjust shims or pinion seating until the mesh is even. Small, even clearance prevents premature wear.

Does switching to 39T require other gear changes?

Changing the spur alters final ratio; you may only need a different pinion to reach the desired ratio. Monitor motor temperature and drivetrain load after any change to ensure reliability.

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