KOH Eval

I modified my car from the original plans by using sliders instead of wooden wheels, which were screwed in rather than attached via hot glue. The body was plastic, not wood, and the frame wasn't a block, but rather a set of shingles to support the rat trap. Unfortunately, my car did not go up the ramp. It moved, but only slightly because as I was winding it one of the wheels came loose. This made it impossible for the car to move because the force of the rat trap went into the axle rather than the wheel, and there was no friction between the wheel and the ground to propel the car forward. I think in terms of what went wrong, the wooden axle was too thin and split under the pressure of the screw. I will definitely make further modifications, maybe even construct a whole new car in order to make sure this one doesn't fall apart when I need it most.