Day 4: Testing and Revision

Meeting up again, we finally got to test our --not so-- hopeful vehicle. The first few tests that weren't recorded didn't quite go in a straight line. The scooter kept on turning and, in the end, moved backwards. There were also problems with the balloon dragging on the ground, resulting the scooter to come to a stop. To fix these problems, some adjustments were made:

• sticking straw through the balloon(though that didn't work...).
• making the hole of the soda top smaller by adding on tape(though that only restricted more air from coming out of the balloon; the vehicle traveled even less).
• blowing up the balloon more, hoping that the air would release powerfully in a straight stream(but it wasn't much help either).
• lathering the bottom of the balloon with water (which didn't really work)
• Putting a paper (which we thought had less sliding friction) underneath the balloon (but there was even more friction from that, causing the scooter to travel less).