MR-4TC SD LCG Steering Rack 1.5mm Adjustment - Yokomo SD-202L15  [SD-202L15]

Fine-tune Ackermann on MR-4TC SD LCG

This is an RC-scale steering rack intended for the MR-4TC SD LCG chassis that lets you alter steering geometry without major disassembly. The unit changes the Ackermann ratio by repositioning the steering rod 1.5mm forward or backward from the standard mounting point, giving a predictable mechanical adjustment for steering feel and turn-in behavior on drift setups.

Installation is straightforward: replace the stock rack with this unit and mount the steering rod in the alternate position to shift the linkage relationship. Because the modification is a lateral rod-offset adjustment, it affects front wheel steering angles rather than requiring changes to servo endpoints or electronics, making it useful for fine-tuning handling at the chassis level.

Tuning notes: moving the rod forward or backward alters inner and outer wheel steering proportions, so test incremental changes on the same track or surface and record results. Combine this mechanical adjustment with tire, toe, and suspension settings to achieve the desired drift transition and mid-corner balance.