3.5 ft tall K'Nex Roller Coaster (vertical)

3.5 ft vertical rollercoaster created out of K'Nex. The build time was around 3 hours. This roller coaster is a completely original design.
By: yoshiinstructable

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Source: http://www.instructables.com/id/35-ft-tall-KNex-Roller-Coaster-vertical/

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