Car: –
University: City University London
Country: England
Class: 1
No.: 44
Length: 2560mm
Width: 1400mm
Height: 1185mm
Wheelbase: 1600mm
Track (front/rear): 1400mm / 1250mm
Weight: 220kg
Weight distribution: 130/158
Suspension: Double unequal length A-Arm, push rod actuated horizontally oriented spring and damper=
Tyres (front/rear): 620 x 20-13 A45 Avon
Wheels: 210mm wide, 3 piece Al rims
Brakes: Slotted Stainless Steel, hub mounted, 220 mm diameter
Chassis: One piece tubular spaceframe, aluminium rear subframe
Engine: 2004 Yamaha YZF-R6 four stroke in-line four
Bore: 65.5mm
Stroke: 44.5mm
Cylinders: 4
Capacity: 599cc
Fuel: 99 RON
Fuel system: City University designed multi-point fuel injection
Performance: 56 kW @ 10,000rpm / 51.8Nm @ 9,300rpm
Transmission: single 520 chain
Differential: Quaife automatic torque biasing differential
Final Drive: 3.5:1
After the foray into Class 1A last year, City has gone back to Class 1 with a more detailed and considered design that has been optimised at almost every level. The current design is lighter, cheaper, more serviceable and more powerful than our last Class 1 entry.
Maximum use of CNC machinery has resulted in more ambitious designs for many components aiding the reduction of weight down to a planned 220Kgs.
A team of students was divided into four design groups: chassis, engine, dynamics and powertrain. Each group has a manager responsible for reporting directly to the team leader. It is the responsibility of each group to develop its own ideas while taking into consideration potential design impacts on other groups.
The use of an aluminum rear plate has allowed the engine to be removed from the chassis complete with suspension components in a short time aiding maintenance.
Extensive dynamometer testing of the Yamaha R6 engine has resulted in mapping adjustments, including fuel injection and ignition timing all resulting in a smoother running engine with increased fuel economy.
The overall goal was never to invent the wheel but simply to encourage its rotation.
