What limits are there to roller coaster height?

Your question takes an engineering approach: What could we build? The answer has very little to do with engineering. read more

There are three practical limits to the height of a roller coaster: Space - Taller coasters travel faster, so they need longer tracks too. You couldn’t have a 300′ drop on a small, tight twisty roller coaster, because you could injure or kill the people on the ride. read more

I think a blanket-style weight limit is not nearly as effective for most rollercoasters as the SIZE limit. If you had a 300-lb guy that was built in such as way that the over-the-shoulder harness fit him well, there'd be no problems. read more