MDE3212 Design Project
Due date: Thursday 21 April 2011 (Rev 1)

Presented by Mr Howard Theunissen and Dr Marcelle Harran (Presentations 2 – 6 May)

1. Option 1 / Formula Student Brake System Design

Design a braking system for a formula student car. The project includes the design of the brake pedal, front and rear brake disks as well as the selection of master cylinders and callipers. The brake disk must be outboard and the car must be able to brake from 120km/h to 0km/h in a straight line.
Brake pedal
• must withstand a force of 2000N
• must be fabricated from steel or aluminium or machined from aluminium, steel or titanium

Brake disks
Any material can be used

Set criteria includes:
Foot force 267 – 500N
No of front disks 2
No of rear disks 2
Tyre diameter 510mm
Weight of vehicle and driver 300kg
Height from ground to centre of gravity 250mm
Wheelbase 1760mm
Weight distribution 50/50
Max g’s 1.7
Tyres coefficient of friction 1.1
Max pedal travel 150mm

Firstly i need to know ho to select my pedal ratio