19-year-old Queen’s University engineering student David Chesney spent four years building a wooden roller coaster in his parents’ backyard in Toronto, CA. He calls it the Minotaur and it was built using used scrap wood, steel plating and his uncle’s tools. The homemade coaster measures 12 ft tall and 92 ft long and features two ~12 ft drops. Chesney says the coaster’s steel car can reach speeds of 20 km/h.

“My dad didn’t like the idea at all from the beginning,” Chesney explained to the Toronto Star. “Mom was kinda, ‘Uhhhh, I guess so.’ I don’t think that either of them understood the scope of what I had in mind.”

“It just got bigger,” he added. “Then it got to the point where my parents said ‘it’s huge but you’ve gotten this far so just finish it and then take it down after.’ ”

Click here for video of the Minotaur in action and visit David Chesney’s Minotaur Facebook Page lots of process photos.

[via The Independent]