The boys and I are going to do their elementary school fair on the impact different things would have on a hot wheels car on a downhill race track. We plan on picking out a handful of cars and seeing how far they will go over multiple runs.
Then we are going to go back and do different things.
Right now I have come up with:
weights on different parts of the car Front, Back, or Middle.
I am going to stay away from any liquid materials to prevent damage to the cars and to the track.
I am also throwing around the idea of clear finger nail polish on the wheels (dried). Would this slick up the wheels and cause less friction? Baby powder on the outside of the wheels to again reduce the friction.
Are there any other ideas out there that people have come up with? If you don't want to share with everyone, feel free to drop me a Private Message.