Designed for the Mechanical Engineering 250 course, by our team of students at the University of Michigan, Sally competed against 30 other bots to climb the slope shown in the video. All teams used the same supplied motor, gearbox and batteries. Judgement criteria is based on a function of time to climb, maximum climbing angle, cost, and design quality.
In the competition Sally climbed consistently and was the only design able to complete the 50' and 53' slope. in about 17 seconds to boot.
Sally's wheels and chassis is 1/8" lasercut acrylic. The cannon assembly and grappling hook shaft were turned on the lathe. She is capable of climbing a near vertical slope, and climbs the test track in 14 to 18 seconds depending on the angle.
Designed by Matt Grandin, Eric Harman, Jim Christiansan, Josh Bon, and Chelsea Holland. 4/14/2010