In this project we had to make a train and tracks and dimension it on inventor. The train had to be correct and the wheels had to turn and the wheels only. For extra credit we could animate the train moving down the track.
We modeled by using the dimensions given to us in a packet. We then extruded or lofted the sketches to creates the pieces that we later used in our assemblies.
My mom pointed out that the wheels where farther apart on one side then the other I fixed it by fixing the offset on the axle peg. Also she saw that on the animation one set of wheels was turning and the other wasn't. I fixed it by putting a motion constraint on the other set of wheels.