I want to make a wood and PVC jet coaster that would go around my Airplane field. The supports would be like this Ikeda Works Coaster but 4x4 posts. http://www.rcdb.com/4115.htm?p=0
I would use two sets of wheelbarrow tires for the brakes so they would screech when my car goes through them. I want to have a gear system for the tires so they would slow me down without putting drive spin motors on them.