pic: 254 Drivetrain

[Dennis Jenks]

Originally Posted by Natchez

How do you cap the screws? Do you countersink them? We tried all kinds of things last year but we could never convince ourselves that we weren't violating the "Traction devices may not have surface features such as metal" rule. Plastic fasteners were not as good as glue. Of course, that's not what the four students that went around with their fingers stuck together for two weeks thought.

Thanks for the help,
Lucien

If you look at the wheels you can see that they are of two piece construction. Each side has a small lip on it so that when they are sandwiched together they grip the tread and keep it in place. The wheels are tapped and we use a pair of small pan head screws, not to hold the tread down but simply to keep the tread pulled tight. These are positioned so that they sit in the waffle well below the tread. If you are using screws to physically hold the tread down then you would need to use a larger head which may not sit deep enough to pass inspection.