UoP3evo

2011
Yamaha WR450 single-cylinder

After encouraging feedback from judges, the 18 members of the team improved the UoP3 chassis and redesigned the suspension to reduce compliance. The powertrain was retained, with a revised differential mount and exhaust. The result was a slightly heavier but far more reliable car. UoP3evo competed at Formula Student Germany at Hockenheimring and Formula SAE Italy at Autodromo Riccardo Paletti, finishing every dynamic event, the team’s best results up to that point.

449 cc

Yamaha WR450, 1 cyl.

Carbon

2-piece monocoque

Every

Dynamic event finished

1650 mm

Wheelbase

Specifications

Length / width / height / wheelbase

2670 / 1431 / 1146 / 1650 mm

Track (front / rear)

1240 / 1220 mm

Weight (with 68 kg driver)

122 / 126 kg

Suspension

Double unequal length A-arms, pull-rod actuated, horizontally oriented spring and damper (front and rear)

Tyres

18×7.5-10 R25B Hoosier slicks / 19.5×6.5-10 Hoosier wets

Wheels

7.5 in wide, 3-piece aluminium rim, custom aluminium centre

Brakes

Floating cast iron, hub mounted, 180 mm drilled ISR rotors, 4 × ISR 22-048 OB four-piston calipers

Frame construction

Two-piece carbon fibre monocoque

Engine

2008 Yamaha WR450

Bore / stroke / cylinders / cc

95 mm / 63 mm / 1 / 449 cc

Fuel

98 octane unleaded

Fuel system

Student designed and built injection, Keihin 550 cc/min injectors, Haltech E6X ECU

Max power rpm / max torque rpm

9000 rpm / 7500 rpm

Drive type

DID ERV 520 chain

Differential

Drexler LSD, Formula Student