Looking for a model or patern for a rollercoaster for physics class?

I need a pattern or design for a rollercoaster model for physics class that would have at least one vertical loop. This coaster must run on gravity only, no magnets.

kelseymh8 years ago
Look in the "K'Nex" area here at I'bles. Type "K'Nex rollercoaster" into the search box and see what you get. Alternatively, type "rollercoaster model" in to Google (i.e., what you should have done before posting this).