Roller Coaster
 

Im trying to make a rollercoaster track in Maya 5. Ive made the tracking itself, but I havent figured out if theres an easy way to bend the track, make it roll, or make it do a loop.

depending on the type of geo your useing you might try lattices.

ok, this is just a guess that might work as well, but you could try making all of your track one single object, then using bend deformers to curve the track any way you wanted. After you're done, you just delete the history of your track, then delete the deformers. (optional of course)

Another option is using a flow path.

Animate:MotionPaths:FlowPath

I've never used them myself, but if you look at the docs, this seems to be exactly what you want.