AR Chassis Tuning Guide

AR is a rigid rear-motor workhorse with an accessible drivetrain. Its consistency comes from careful alignment: make sure the motor sits true, the gears mesh quietly and the battery contacts stay secure through impacts.

Eliminate drag first

Check shafts for straightness, remove unnecessary gear play with appropriate spacing and use clean bearings. If the motor mount allows movement under load, solve that stability problem before choosing a faster motor. Quiet running is a practical signal that the mesh is close to correct.

Use rigidity deliberately

AR's firm structure can work well with deliberate rear damping and balanced brakes. Mixed tyre diameters may require careful clearance checks. Open-class flex work is advanced and rule-dependent; a clean bolt-on setup is the better starting point.