UTSME15: Juliet

UTSME15: Juliet was our team’s first ever electric vehicle.

Overall result: 24th out of 30 participants.

Power	70kW (@ 7000 rpm)
Torque	120 Nm (@ 0 rpm)
0 – 100 kph	3.8s
Cornering capability	1.6 G
Weight	234 kg
Wheelbase	1525 mm
Track (f/r)	1125 mm/1100 mm
Weight Distribution (f/r)	50/50
Chassis	Hybrid aluminium honeycomb monocoque and rear Cro-Moly spaceframe
Motor	Enstroj Emrax 228
Controller	Unitek Bamocar D3
Cooling System	Aluminium Radiator Electric water pump
Accumulator	108 x A123 3.3V 400A Cells
Battery Management System	Lithiumate
Transmission	3.16 ratio chain drive
Differential	Hollow aluminium spool
Axles and tripods	4130 Cro-Moly axles Taylor Race tripods
Suspension	Dual Wishbone (f/r) Direct acting (f/r)
Unsprung	Machined aluminium uprights Machined aluminium (4 stud) spindles 2.5mm forged aluminium rims (13”), machined aluminium centres
Springs & Dampers	Coil springs Ohlins TTX25 dampers
Electronics	Motec PDM15 Motec CDL3 dash Custom loom
Steering	Rack: centre mounted (6.4/1) Carbon fibre steering wheel Steering column: universal joint, fabricated mounts
Pedal Box	Fabricated sheet steel Fabricated aluminium base Adjustable position
Brakes	Master cylinders: AP Racing CP7A55 14mm Brake bias: driver adjustable Front brake calipers: Wilwood 2 Pot Rear brake calipers: Wilwood 2 Pot
Tyres	Hoosier 20.5×7-13 R25B
Bodywork	Carbon fibre nose cone Carbon fibre side pod
Impact Attenuator	Aluminium honeycomb