Regenerative Braking
Conversion of kinetic energy to chemical energy that can be stored back into the battery.
Tesla’s regenerative braking works through the position of the throttle to control the torque applied. This torque could be positive (Forward) or negative (Backwards).
As throttle is slowly let off, motor swaps direction to slow your car down.
https://www.tesla.com/en_CA/blog/magic-tesla-roadster-regenerative-braking
The maximum temperature of heat when brake is applied is around 250 degrees celsius
Most common amp usage for a 7 inch brake magnet is 3.2 amps maximum
With regen brakes, they are 60-70% efficient
https://www.elecbrakes.com/blog/can-standard-trailer-wiring-power-electric-brakes/
Drum brakes can provide more braking force than a disc brake.
Drum brakes can last longer because they have a larger area for contact with friction, making it wear out less then a disc brake
Disc Brakes can provide a harder clamping force, increasing stopping power
Drum brakes are cheaper to manufacture than disc brakes.
Rear drum brakes generate lower heat.
Brake by Wire
Brake pedal sends a signal to the brake control unit which in turn activates the brake. The pedal
position and pressure in which applied will decide how hard the brakes work to stop the vehicle
An electric pump is used to push hydraulic fluid through the brake lines in order to actually
activate the brake (Similar to conventual brake systems)
A disadvantage is that this feels like an artificial braking system so it can hard to get used to
Most companies use this as a backup option or a side option to conventional brake system
Advantages is that it is better at stopping a vehicle then the conventional style because the
computer is faster, also Alpha Romeo uses a large brake booster which allows them to stop in
100 milliseconds compared to 300 milliseconds in the conventional style brakes
Brake Disk Size Charts (Helpful Links)
Disk Brakes Vs Drum Brakes (Helpful Links)
https://www.popularmechanics.com/cars/car-technology/a22126727/brake-by-wire/
https://www.motorauthority.com/news/1129985_what-is-brake-by-wire-and-how-do-these-systems-work