Railgun, a Knex Roller Coaster

Introduction: Railgun, a Knex Roller Coaster

About: Hi!, I`m Levi I`m back building! and i play Videogames like Fifa 14/15

Hey guys!, its been a while isnce i poste anything on Instructable!, but here it is i`ve made a new roller coaster in the past weeks!,
i give you, Railgun!

http://www.youtube.com/watch?v=TVTkyl5Bv-I&feature=youtu.be

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    8 Discussions

    0
    KnEx FrEaK 1
    KnEx FrEaK 1

    4 years ago

    I'm curious. do you design the coasters before you build them or do you just guess and check while you build?