Fixing Poor Mini 4WD Cornering

Poor cornering shows up as lost speed through bends, wall-riding, or a car that will not settle after a direction change. All three are roller geometry problems more often than anything else.

Diagnose front or rear

Trouble entering a corner points at front roller geometry. Trouble mid-corner or on exit, particularly the tail stepping out, points at the rear.

Height before anything else

Rollers that are not engaging the wall through its usable band cause most cornering complaints. Confirm heights are correct before adjusting width or changing roller type.

Width and stagger

Reducing the gap between rollers and wall calms the car but adds drag. A small stagger between front and rear widths often settles a car that oscillates through bends.

Consider grip

If geometry is right and the car still will not hold a line, a slightly grippier tyre gives the car something to turn against. Steering aids help, but they cannot fix bad roller heights.