Yokomo BD-630 Direct Main Gear Adapter for BD5 conversion  [BD-630]

Overview: BD-630 direct main gear conversion

This accessory converts the BD5 centre one-way main gear adapter into a direct main gear adapter by removing the one-way mechanism, providing a fixed drive link in the drivetrain centre assembly. It serves as an RC replacement part for on-road cars where a direct main gear is part of a chosen setup strategy.

The package includes the axle pin required for installation. Installing the adapter alters centre driveline response by eliminating the freewheeling action of the one-way unit, which changes power transfer during coasting and when reverse forces occur. This is useful when drivetrain configuration is used to tune traction and handling characteristics.

Fitment advice: check centre assembly clearances, ensure main gear aligns correctly with the spur and pinion gears, and tighten retaining hardware to the torque values recommended for your chassis. This conversion affects drivetrain operation at the model scale and is intended for hobby RC use only.

Compatibility

Compatible with the BD5 drive system centre assembly as a direct main gear adapter replacement, intended specifically for Yokomo BD5 on-road drivetrains.