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The Invictus 3.0 was built to compete in ESVC for the second time. We built a carbon fiber monocoque from a unique process. The vehicle held a plethora of features and components that helped grab many awards in the competition. It also allowed us to win the best design award for the third consecutive year.

Awards won

Key features

Weight: 180 Kg

Dimensions: 2487mm X 1500mm X 1100mm

Wheels: 4 Wheels

Motor type: Brushless DC Motor

Battery Type: Li-ion Battery

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 Chassis System 

 Wheelbase: 1575 mm 

 Wheel Track: 1270 mm 

 Ground Clearance: 157 mm 

 CG Height: 274 mm 

 Weight Distribution: 54% on front axle & 46% on rear axle 

 Chassis Material: CF 300,400 GSM with CF sandwiched honeycomb 

 The chassis is considered to be one of the significant structures of an automobile. It is the frame that holds both the car body and the power train.

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 Suspension System

 Sprung Mass: 44 Kg 

 

 Caster Angle: 2° 

 Motion Ratio: 0.56 

 Spring travel: 101 mm 

 Damping ratio: 0.7 

 Kingpin Inclination: 4.5° 

 We took the decision of choosing double-wishbone suspension in the front as it   had the primary benefit of giving us an increase in negative camber as we   increase the movement.

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 electrical System 

 Cells used: 429 

 

 Motor Specifications: 48 V with 3200 rpm 

 Motor Peak Torque: 36 Nm 

 Panel efficiency: 24.2% 

 Solar panel area: 2.6 m2 

 Solar Specifications: Monocrystalline, 404 W 

 We are using Arduino to monitor and control the data acquisition of the vehicle along with cloud computing to monitor the data in real-time.

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 Steering System 

 Caster angle: 2° 

 Steering angle: 30° 

 Scrub radius: 49 mm 

 

 Steering efforts: 70.25 N 

 Turning center radius: 1.7 m 

 Steering wheel diameter: 254 mm 

 Ackermann geometry provides steering angles at turns with a simple and   compact design. Rack and pinion steering type gives easier and more compact   control over the vehicle.

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 brakes System

 Pedal force: 1000 N 

 Radius of wheel: 244 mm 

 Disc temperature: 167.5 °C 

 Stopping distance (s): 6 m 

 Caliper piston diameter (Dp): 27.5 mm 

 Coefficient of friction in pad and disc (µc): 0.3 

 The convective heat transfer between the rotor and air is designed to be   efficient. The balance bar is desgined to sustain and efficiently transmit the force   applied by the driver on the pedal to give a smooth ride.

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 transmission System 

 1st Gear acceleration: 2.24 m/s2 

 4th Gear acceleration: 0.91 m/s2 

 Motor power rating: 1500W to 2500W 

 The volume of gearbox: 626.8 ml 

 4-speed gear reduction with DAQ system 

 Semi-automatic gear shifting by using servo motor with Arduino 

 The output of the servo is given to the lead screw which is been used for sliding   the dog clutch. The power is then transmitted to the spool via a sprocket.