• Designed and built an original tricycle (project title of "Drill-Powered Bike") to be powered by a Ryobi drill

  • Gear train, linkages, solid mechanics

  • Original design via tricycle and engineering design intuition

  • CAD, GD&T, welding

• Purpose built for the end-of-year runoff competition against ~15 other Drill-Bike groups in the Mobility division

• Acted in the CAD engineer role

• Designed the frame of the bike and modeled the final assemblies

  • Bike frame was the most important design requirement to accommodate 3 wheels while not resembling existing bike designs

• Machining metal tubing to be welded together, with having made GD&T drawings for each individual component

• Took a role in leading the 5-person group to help progress the design, purchasing of components, and manufacturing to ensure deadlines were met

• Fast and agile tricycle meant for the user to stand on the frame rather than the originally intended seated position

• Gained extensive design, linkage, solid mechanics, dynamics, and manufacturing knowledge

• Won 2nd place in the Mobility competition of the Drill Bike Runoff, running through an obstacle course at high velocity

Key Learnings: It is difficult to design a new bike while trying to ignore previous bike design knowledge. In designing a tricycle, there are more weight distribution considerations necessary to managing high velocity turning. With the small wheel base between the rear wheels, our bike produced too much torque to easily corner in mobility, forcing the standing position to be optimal for the user.