TRX4 Pendulum Knuckle Weight Assembly, Brass Mass TRX4023C by GPM  [TRX4023C]

Precision pendulum mass for crawling tuning

This 16 pcs pendulum wheel knuckle axle weight set is a specialist RC accessory intended to increase downward force on TRX4 platform crawlers. The component uses a brass body combined with an alloy lid and stainless steel rolling beads to locate mass low on the wheel, improving tyre contact when negotiating minor drops or soft surfaces.

The assembly is supplied with a 9mm hex adapter sized larger than the stock hex to support wheels that accept a bigger hex, plus screws, shims and washers for secure attachment to the outer knuckle case at both front and rear. Mass is adjustable by removing or adding stainless beads, allowing precise tuning of pendulum inertia per wheel.

Materials were chosen to provide predictable mass distribution and corrosion resistance in field use: brass for the main weight, alloy for the lid, and stainless steel beads and fasteners suitable for wet or muddy conditions. This unit is a tuning component for RC crawling behaviour and should be installed and validated on model vehicles only.

Use bead count and placement to precisely tune low-speed traction and rotational inertia for TRX4 crawlers, checking fitment and drivability after installation.