This SG-4878S is a 78-tooth standard spur gear specified for use with D-MAX series dual clutch (slipper) systems on 1/10 scale RC models. It serves as a direct replacement or tuning option where a 48P spur is required, maintaining the intended tooth count while allowing fine adjustment of slipper engagement and overall driveline behavior.
Installation is straightforward for experienced hobbyists: confirm 48P compatibility with the pinion and slipper unit, set a correct gear mesh to avoid premature wear, and verify that the slipper plate and clutch engagement are adjusted to the vehicle's expected load. Keep the surrounding area free of debris and inspect mating surfaces and bearings for smooth operation before finalizing the assembly.
In tuning, a 78T spur changes effective gear ratio relative to smaller or larger tooth counts, affecting acceleration and top-end balance when combined with slipper preload and motor timing. Use small incremental changes and test runs to find the preferred compromise between responsiveness and drivetrain longevity.
Compatible with D-MAX series dual clutch (slipper) assemblies that use 48P spur gear specifications.
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