3Racing SAK-D4841B Sakura D4 48P 40T Racing Pinion  [SAK-D4841B]

3RACING Sakura D4 48 Pitch Pinion Gear 40T For SAK-D4841 - SAK-D4841B
Price:
USD$3.80
Brand:
3Racing
Model:
SAK-D4841B
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Race-Oriented Pinion for Sakura D4 Setups

The 3Racing SAK-D4841B pinion has been specified for the Sakura D4 chassis with a 48 pitch and 40 tooth configuration to provide predictable gear ratios and tight engagement for tuned race cars.

Geometry and Tuning Considerations

The 48P tooth form aligns with standard 48 pitch spurs used in competitive setups, reducing micro-slop and preserving consistent tooth contact under load. The 40T choice is a deliberate tuning increment for drivers seeking increased top speed in high-speed sections.

Practical Fitment and Setup Advice

Engineered to fit Sakura D4 motor mounts, this pinion installs with conventional methods. For best results set mesh using a thin shim method, verify pinion axial position, and recheck after initial runs to confirm stable engagement.

 

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What spur pairing works best with 40T?

Pair 48 pitch spurs that maintain recommended tooth counts for your motor rpm and track layout. The 40T pinion suits setups where slightly higher top speed is required without changing the spur drastically.

Any quick setup checks before racing?

Confirm pinion concentricity, secure set screws, perform a paper mesh test, and run at low speed to verify noise and temperature before competitive running.

When should I change the pinion for racing?

Replace the pinion if you notice tooth deformation or inconsistent mesh that affects lap times. Consistent tooth profile is critical for predictable gear behaviour in race conditions.