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This is a loop using the knex motor from rippin rocket 2 coaster and 2 pieces of orange track. The car goes around the loop 3 times a second but ...
Simple K'nex Shockby birdycrazy
Knex Ball Machine Element: Side Loopby Thibault Art
Celebrate Christmas With K'nex This Year!!!by nerfrocketeer
K'nex Ball Machine Lift: Giant Ball Catapultby Mechanical Master
Knex roller coaster .by knex dude 2000
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