Crimson Racing Wiki

Shock Assembly

Subteam: SuspensionSubsystem: DampersAssembly: Shock AssemblyCars: CR21, CR22, CR25, CR26I, CR26E

Purpose

Assembly line covering the dampers, springs, bump stops and spacers.

Function

Grouped under Suspension > Structures > Dampers, a node the taxonomy notes is not part of the official subteam tree. The shock assembly had to live somewhere; resolving the tree is an open item.

Design Process

No part-specific design process is documented. The Dampers subsystem design process applies: 1. Kinematics sets wheel rates; spring rate follows from wheel rate and motion ratio. 2. Dyno the available dampers and select matched units by axle. 3. Set bump stop height from the aerodynamic minimum ride height and the worst-case heave and roll. 4. Tune on track using damper position data from the bellcrank rotary hall-effect sensors. 5. Read the traces for asymmetry between bump and rebound travel time, which is the practical indicator of over- or under-damping.

Reoccuring issues

Fault Vault, 2026-04-12, CR26I, Complete Failure: a TTX25 MkI limiting valve cap screw sheared and the damper discharged fluid and pressure into the vehicle during adjustment. MkII dampers use a circlip for containment and do not share the failure mode.

Properties

Dimensions called out on the cost report drawings. These are the figures printed on the drawing, not a labelled specification; open the drawing itself for what each one refers to. ShockAssembly (mm): 200.0, 25.4 Source: Cost report drawings: CR26i/Suspension/Competition/Cost Report Drawings/Suspension and Shocks/Shock Assembly/ShockAssembly.pdf Quantity per car, as costed: 1, 4

Still to document

Nothing in CrimsonStorage covers these yet.