CR21 and CR22 steering rack.
Superseded by the NARRco unit from CR25 onward.
No part-specific design process is documented. The Steering subsystem design process applies: 1. Kinematics sets steering geometry, Ackermann targets and rack travel. 2. Size the column and shafts for torsional stiffness and for the bearing housing that supports them. 3. Calculate static steering force from the tire and geometry, and check it against anthropometric limits. 4. Design the wheel shell around the button and switch layout and the dash sightline; prototype grips and take driver feedback. 5. Validate steering effort and Ackermann on track, using the alternate tie rod mounts to sweep setups.
Fault Vault, 2023-06-01, CR22, Design, Compromised Failure. Steering locked at 45 degrees instead of 90 because the KAZ rack has double the ratio of the Mark Williams rack it replaced, and that was never communicated or accounted for. The fix required an upright, geometry and rack mount redesign.
Nothing in CrimsonStorage covers these yet.