we were bet that we couldn't build a roller coaster in my friends backyard for under $50.

we were only able to finish two sections that night

we bolted 4 wheels onto the bottom and 4 onto the sides. then screwed a stadium seat onto the top with 2x4's to hold onto.

we had to let the boards soak in water all night so that we could bend them to shape in the morning

we tested it once with a 15 lb cinder block. somehow we figured that was a good test before we threw our 160lb bodies onto it.

it was actually a very smooth ride.

We were giving neighborhood kids rides all night. total cost? $49.27 at home depot for the wood and wheels.

Source: http://imgur.com/gallery/2lFGW