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Mods
Everything.
Build story
This car is an entirely custom-made, purpose built, single seater, 3 wheeled vehicle designed with the sole purpose of maximizing fuel economy, meant for the annual SAE Supermileage competition. Since we will unfortunately not be attending it this year, we thought our efforts might be appreciated here, or at least will give a good laugh. \r
The chassis is a carbon fiber monocoque designed from the ground up, weighing in at about 23 lbs and is designed to be extremely aerodynamic with a drag coefficient of 0.103. Overall dimensions are 3.3m long, 0.7m wide and 0.53m tall. Driver is positioned feet forward, lying on their back to fit in the cockpit. \r
Powering the rear wheel is a heavily modified gasoline powered, Briggs and Stratton Junior 206 OHV go kart engine. Modifications include adapting an OHC Honda cylinder head, smaller hemi style piston, custom cylinder sleeve, and a custom connecting rod all designed and made to work with the original Briggs engine block. The changes reduced engine displacement to 96cc and increased the compression ratio to 11.2 :1 all for increased fuel efficiency. The engine is mated to a simple centrifugal clutch, with a chain drive reduction driving the rear wheel (competition rules state a max speed of 40 km/h anyway)\r
Fully equipped, the car weighs 84 lbs, with a top speed of about 65 km/hr (no team members have been brave enough to take it faster)\r
We had hoped our car would break 1000 mpg this year, but oh well. Last year the car managed 531 mpg using an unmodified engine with a specialty dual carburetor intake set up. \r
This car was built by the Ryerson Supermileage undergraduate student design team at Ryerson University. The SAE Supermileage competition is a collegiate series event where purpose-built vehicles made by undergraduate university students come to compete for the highest fuel economy on an oval track.
The chassis is a carbon fiber monocoque designed from the ground up, weighing in at about 23 lbs and is designed to be extremely aerodynamic with a drag coefficient of 0.103. Overall dimensions are 3.3m long, 0.7m wide and 0.53m tall. Driver is positioned feet forward, lying on their back to fit in the cockpit. \r
Powering the rear wheel is a heavily modified gasoline powered, Briggs and Stratton Junior 206 OHV go kart engine. Modifications include adapting an OHC Honda cylinder head, smaller hemi style piston, custom cylinder sleeve, and a custom connecting rod all designed and made to work with the original Briggs engine block. The changes reduced engine displacement to 96cc and increased the compression ratio to 11.2 :1 all for increased fuel efficiency. The engine is mated to a simple centrifugal clutch, with a chain drive reduction driving the rear wheel (competition rules state a max speed of 40 km/h anyway)\r
Fully equipped, the car weighs 84 lbs, with a top speed of about 65 km/hr (no team members have been brave enough to take it faster)\r
We had hoped our car would break 1000 mpg this year, but oh well. Last year the car managed 531 mpg using an unmodified engine with a specialty dual carburetor intake set up. \r
This car was built by the Ryerson Supermileage undergraduate student design team at Ryerson University. The SAE Supermileage competition is a collegiate series event where purpose-built vehicles made by undergraduate university students come to compete for the highest fuel economy on an oval track.