To get more surface of the wheels touching the ball, we made thicker wheels and gave them a curve on the sides. The size of the before sanding was diam . 83 mm. If we launch the ball, we notice it doesn't go further then the small wheels. Even a bit shorter. But maybe, that's because we didn't use a launch tube.
Expected positive feedback:
De ball is launched.
Unexpected positive feedback:
Expected negative feedback:
The wheels don't turn completely equal.
Unexpected negative feedback:
The ball doesn't go further then with the thicker wheels. We expected more power of it.
Makeability score: 2