3Racing 3RAC-SG4874 74T Racing Spur Gear  [3RAC-SG4874]

3RACING 48 Pitch Spur Gear 74T - 3RAC-SG4874
Price:
USD$4.40
Brand:
3Racing
Model:
3RAC-SG4874
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Track-oriented 48-pitch spur for precise ratio tuning

The 3Racing 48 Pitch Spur Gear 74T - 3RAC-SG4874 is targeted at racers and tuners who need predictable gear changes and repeatable mesh settings. Its tooth count enables fine adjustments to final drive for specific track conditions.

Engineered for competitive setups

This spur supports accurate ratio selection when testing pinion steps, helping teams and privateers optimise acceleration and top speed trade offs. It integrates into 48-pitch drivetrains without altering standard installation points.

Practical for setup and quick swaps

Use the 74T spur to evaluate gear ratio effects during setup sessions. It facilitates quick changes between tests while preserving consistent mesh behaviour, which is important when tuning damping and power delivery across runs.

How should I approach ratio testing with this spur?

Start with your baseline pinion, record lap times and motor temps, then change pinion size in single-tooth steps to assess acceleration and top speed impact while keeping other variables constant.

Any setup notes for high RPM motors?

With high RPM systems monitor mesh under load and check for micro-slip. Slight mesh adjustments can prevent premature wear while maintaining efficient power transfer at elevated speeds.

What is the recommended way to verify fit before racing?

Confirm spline compatibility and mounting clearances on the bench, then run a brief low-speed test to ensure no binding or interference before competitive sessions.