Clamp the pads onto the rotor with the force the master cylinders generate.
Brembo P2.34 at the front, ISR 22-049 OC/D at the rear. Caliper piston area, together with master cylinder bore, sets the hydraulic ratio and therefore the pedal force needed for a given clamp force.
No part-specific design process is documented. The Brakes subsystem design process applies: 1. Set tire loads at the maximum airspeed seen (90 mph): rear 291.60 lbf at max acceleration, front 454.21 lbf under braking, 427.97 lbf cornering. 2. Sweep master cylinder bore combinations against required pedal force and achievable deceleration, then select. 3. Run a transient thermal simulation of the rotor for a single braking event (2.4 s, 260 C initial, 90 W/m^2-K film coefficient, 0.8 emissivity, 25,375 W heat flux front) and import that thermal load into a static structural run (1.84 g deceleration, 12 MPa pad pressure, 707 N-m moment) with cylindrical and frictionless supports. 4. Compare candidate materials on peak and low temperature and on minimum factor of safety. 4340 gave 741.2 C high, 344.5 C low and FoS 3.6438, against Class 40 cast iron at 490.5 C, 256.5 C and FoS 2.1622. 5. Validate with brake rotor temperature sensors on all four corners and compare measured against calculated.
Purchased units. Brembo P2.34 $450.99, ISR 22-049 OC/D $210.43.
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.
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. CR26I_ISR_22-049 Caliper (as drawn): M10x1.25, 150-250 Source: Cost report drawings: CR26i/Suspension/Competition/Cost Report Drawings/Brake System/Brake Calipers, Pads, and Master Cylinders/CR26I_ISR_22-049 Caliper.pdf Quantity per car, as costed: 1
Nothing in CrimsonStorage covers these yet.