CR26E naming for the headrest backing.
Same function.
No part-specific design process is documented. The Ergonomics subsystem design process applies: 1. Take driver body measurements and place them against the ergonomics study ranges. 2. Mold the seat insert to the driver in the car with expanding foam, then hand post-process and cover. 3. Set headrest and harness mounting to the rules and to the driver's shoulder height. 4. Run a simulator or on-track endurance stint and measure fatigue with EMG. 5. Iterate the insert shape at the identified pressure and support points.
Waterjet from sheet, or laid up on a milled or 3D printed mold.
CFRP and Nomex honeycomb sandwich.
None recorded. This part has no entry in Knowledge_Transfer/Issue Logging/Fault Vault.xlsx, in either Issue Log.xlsx, in CR22/Issue Tracking/Shakedown 7-15-23.xlsx, or in any design review issue list found in CrimsonStorage or Box.
Chassis weight breakdown: CR25 0.570 lb, CR26E CAD 1.008 lb. CAD mass, CR26E master assembly: 1.008 lb (0.457 kg). CG at X 61.75 in, Y 0.00 in, Z 27.81 in in vehicle coordinates. Source: CR26E/Systems/03 - Mass Model/ChassisWeightBreakdown.xlsx | SolidWorks mass model exports: CR22 (5 May 2024), CR25 (4 Jul 2025), CR26I (30 Jul 2025), CR26E (22 Mar 2026) Quantity per car, as costed: 1
Nothing in CrimsonStorage covers these yet.