This was a project undertaken in collaboration with the faculty of the transport department of NID. The idea was to build a one wheeled ic powered motor vehicle. There was no purpose behind the project other than to have a little fun.
The Engine assembly and the transmission:
The power is transmitted to the main wheel though a small aluminum friction drive. The rear sprocket was initially from a cycle but was later replaced to one from a Hero Puch for better low-end torque from the puny engine. Adequate contact force between the rubber and tubular wheel is ensured by two tension springs attached between the swingarm and frame.
The seat at present is actually the skeleton of a Bajaj scooter rider’s seat (most probably a Chetak model) – it has a built-in spring under the the seat pan which suspends the cantilevered seat. The frame-and-flattened-spring construction of the seat top feels perfectly comfortable even without any upholstery on! This seat is working beautifully for the monowheel since there is little scope for any other kind of suspension to isolate the rider from the road.