Recent content by DefyGravity

Nevermind about that. I already have the basic foundations, but I need to know how to use a wheel bearing to create a see-saw like mechanism. Would I insert the wooden dowel through the middle and create supports so it is stable?

http://mrwhitescience.pbworks.com/w/file/39820878/RC%20Rubric.xls" That is the general rubric of how the model will be scored

I need some suggestions for how to create a model roller coaster that does not use additional energy (electricity, or touching the model in progress ) and can re-run the entire model twice. Since creating a perpetual device with 100% efficiency is unfeasable, my instructor was generous enough...