Crimson Racing Wiki

Pedals

Subteam: ElectricalSubsystem: BSPDAssembly: PedalsCars: CR21, CR22, CR25, CR26I

Purpose

Assembly line covering the complete pedal box.

Function

Groups the brake and accelerator pedal assemblies, the trays, the rail, the balance bar hardware and the adjustment mechanism. Design Philosophies and Processes: Inherited from the BSPD subsystem design process: 1. Establish the rules requirement and the thresholds from real vehicle data (brake pressure at which hard braking is unambiguous, throttle position of 10%). 2. Schematic capture in Altium, split into the main connector, reset subcircuit, signal loss subcircuit, simultaneous brake and throttle subcircuit, and the fault and latching subcircuit. 3. Lay out the board, push to MCAD, design the case. 4. Manufacture and bench test each subcircuit. 5. Validate on the car by observing PDM outputs: output 1 (ignition), output 11 (injectors), output 5 (fuel pump) all drop for the fault duration.

Reoccuring issues

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.

Properties

Chassis weight breakdown: CR25 4.220 lb, CR26E CAD 3.440 lb. Weighed mass: 2331.5 g (5.140 lb). Source: CR26E/Systems/03 - Mass Model/ChassisWeightBreakdown.xlsx | Subteam weight books: CR25/Initial Documents/Weight Breakdown CR25.xlsx

Still to document

Nothing in CrimsonStorage covers these yet.