CR21 line item covering the aerodynamic wing mounting hardware.
Split from CR22 onward into separate front wing mounts and rear wing mounting, the latter using aluminium swan necks for drag load, carbon rods for lift load and cables for lateral stability.
No part-specific design process is documented. The Front wing subsystem design process applies: 1. 2D CFD sweeps in ANSYS to place elements and set angle of attack cheaply. CR26E ran 153 two-element and 148 three-element sweeps for the rear wing on the same method. 2. Move promising 2D results into a 3D half-car model at 35 mph, chosen as a representative competition corner speed. 3. Iterate in the half-car model, tracking CLA, CDA, CoP and tire drag in an iteration tracker. 4. Run the best candidates in the performance map (PMAP) full-car model for yaw, roll and cornering. 5. Validate on track with constant-speed testing, tufting and Flo-Vis oil.
Milled on the CNC.
Aluminium. From the cost report drawings and CAD: From the cost report drawings: 6061-T6 (CR22_SUS_Top_Mount_RevFinal); Al-6061T6 (CR25_SUS_TopMount).
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.
CAD mass, CR26E master assembly: 0.114 lb (0.052 kg), 10 instances, 1.140 lb total. CG at X 63.59 in, Y -0.00 in, Z 6.24 in in vehicle coordinates. (CAD component: Mount_V3) 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. CR22_SUS_Top_Mount_RevFinal (in): 0.4375, -0.00000.0050, 0.763, 0.500, 0.190, 0.003, 0.212 ±0.002, 1.625, 1.250 ±0.002 ARB Chassis Mount (as drawn): 8.28, 0.83, 24.13, 2.41, 10.16, 1.02, 6.35, 0.64, 12.70, 1.27 CR25_SUS_TopMount (as drawn): 21.97, 2.20, 12.70, R1.27, 25.40, 2.54, 57.15, 5.72, 42.42, 4.24 CR26I_TopMount (mm): 34.67, 3.47, 57.15, 5.72, 25.40, 2.54 Quantity on the drawing: 6. Source: SolidWorks mass model exports: CR22 (5 May 2024), CR25 (4 Jul 2025), CR26I (30 Jul 2025), CR26E (22 Mar 2026) | Cost report drawings: CR22/Document Submissions/Cost Report/Suspension/Cost Report Drawings/Suspension & Shocks/Front Upright Assembly/CR22_SUS_Top_Mount_RevFinal.pdf; CR22/Document Submissions/Cost Report/Suspension/Cost Report Drawings/Suspension & Shocks/Rear Upright Assembly/CR22_SUS_Top_Mount_RevFinal.pdf; CR22/Suspension/Design/01_Cost_Report/Cost Report Drawings/Suspension & Shocks/Front ARB Torsion Bar/ARB Chassis Mount.pdf; CR22/Suspension/Design/01_Cost_Report/Cost Report Drawings/Suspension & Shocks/Front Upright Assembly/CR22_SUS_Top_Mount_RevFinal.pdf and 3 more Quantity per car, as costed: 1
Nothing in CrimsonStorage covers these yet.