We are finishing our frames. First problems, first questions, first discoveries, and some vocabulary.
As several pairs of students started testing their frame, connecting their motor to the battery pack, they noticed that the motor was rotating, but the frame was staying in the same place. Was was going on?
As students tinker with the gears and their connections, they discover that gears need to mesh. We also learn how to name parts by their names, 8-tooth gear, crown gear, axle, beam, bushing, etc.
Some frames were moving forward and backward. Mr. Cretinon invited a couple of students to experiment with changing the size of the gear connecting to the crown gear. Result? The frame moves faster. Why? Let's figure out the relationship between the driver gear and the follower gear. What is a driver gear?