SM-S1

SolarMobil Series -1 dubbed as SM-S1 is the third car out of the team. SM-S1 is India's first solar passenger vehicle. It seats four in a 2x2 arrangement and has a single charge range of 160km. The car uses a hybrid chassis consisting of a ladder and spaceframe chassis. The material used for the chassis is AISI 1018 steel. The body is made of glass fibre reinforced composite and the aerodynamic coefficient of the car is around 0.3. the size of the solar array is 4.5m2. The solar panels were provided to the team by Tata Solar. It houses a 19 kwh battery pack that was manufactured in-house using Li-ion cells.

The car houses a completely custom single speed gearbox that is linked to two AC motors via drive shafts. The car is a front wheel drive. The suspension systems, and hand brake systems were developed in-house and manufactured by the students themselves. The main braking system is hydraulic and uses Wilwood four piston callipers to provide efficient braking.