Crimson Racing Wiki

Emergency Stop

Subteam: ElectricalSubsystem: Custom ElectronicsAssembly: Dash Panel AssemblyCars: CR26I, CR26E

Purpose

Lets the driver or a marshal shut the car down immediately.

Function

A latching mushroom-head switch on the dash panel that cuts the ignition and fuel circuits. On the dash it sits alongside the engine run switch, ignition button, fan switch and brake bias knob.

Design Process

No part-specific design process is documented. The Custom Electronics subsystem design process applies: 1. Collect the sensor list from every subteam, agree location and type with the designer who needs the data. 2. Split sensors between ECU and dash based on which parameters are engine-critical. 3. Size the charging system and validate it. A custom current measurement board (50 A bidirectional sensing chip, inline on the rectifier-to-PDM wire) measured what the rectifier actually puts back. 4. Build the datalogging parameter list with rates, then check CAN bus load. 5. Validate on a mock endurance: average battery voltage 13.4 V, minimum 12.1 V excluding cranking on CR26I.

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.

Still to document

Nothing in CrimsonStorage covers these yet.