CUBMOBILE DIRECTIONS
Here are some plans I found online for a cubmobile. We do not start "on a ramp" but on a slope. Your cars will not require additional propulsion devices.
Most pack 60 cars in the past have been made with an old office chair seat (take off the legs). This is a great way to make a "chair" for your car.
For the brake, use a solid piece of wood. These have snapped in the past. The hill is not so big that this is a problem, just disappointing for the kids who like to "brake" Bicycle tubing or other rubber can be secured onto the wood to cause drag when the brake is engaged.
The trickiest part is probably the wheels. They should be secure enough that they don't start to lose alignment after trips down the hill. Call Pete if you have questions.
There have been a few questions about downhill derby cubmobiles.
We are not "racing" the cars for prizes. In other words there is no real advantage to going really fast....
It is however important that these cars don't go TOO fast.
The hill at Indian Springs has worked well for cars constructed without bearings and simply lag screws into the 2x4 to hold the wheels.
To clarify:
Don't use wheels with bearings. The cars will go TOO fast.
There is no need for a full metal axle on the car. Use the 2x4 as shown in the picture online.
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In another lifetime, the host of this blog worked for Akela Deb. DayCamper