Introduction: Speed of Sound [Cancelt]
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![Speed of Sound [Cancelt]](https://content.instructables.com/FKU/AK7M/HNICUYD0/FKUAK7MHNICUYD0.jpg?auto=webp&fit=bounds&frame=1auto=webp&frame=1&height=300)
![Speed of Sound [Cancelt]](https://content.instructables.com/FY1/ZULZ/HNICUYD1/FY1ZULZHNICUYD1.jpg?auto=webp&fit=bounds&frame=1auto=webp&frame=1&height=300)
![Speed of Sound [Cancelt]](https://content.instructables.com/FBN/1QCW/HNICUYD2/FBN1QCWHNICUYD2.jpg?auto=webp&fit=bounds&frame=1auto=webp&frame=1&height=300)
![Speed of Sound [Cancelt]](https://content.instructables.com/FHG/3ZPS/HNICUYD3/FHG3ZPSHNICUYD3.jpg?auto=webp&fit=bounds&frame=1auto=webp&frame=1&height=300)
![Speed of Sound [Cancelt]](https://content.instructables.com/FMG/OY63/HNICUYD4/FMGOY63HNICUYD4.jpg?auto=webp&fit=bounds&frame=1auto=webp&frame=1&height=300)
![Speed of Sound [Cancelt]](https://content.instructables.com/FPJ/8PCW/HNM4A3LT/FPJ8PCWHNM4A3LT.jpg?auto=webp&fit=bounds&frame=1&height=1024&width=1024auto=webp&frame=1&height=300)
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About: Hi!, I`m Levi I`m back building! and i play Videogames like Fifa 14/15
My Knex Replica Of The Speed Of Sound! Update 1, Hi Im working on a boomerang type coaster, the coaster works but im having problems with the the station because i got a pin to push the car back and the longer lift wil take the car back how im gonna make the station chain make move after the train got intro the long lift hill because when the train drops and the station chain doesn`t move than the car wil hit that pin that push the car back and than the pin is gonna be broke so please help me to how to fix this problem! some pictures and video
Video! http://www.youtube.com/watch?v=m4vcyWqSRXw&feature=youtube_gdata
My SSC Threath! http://www.sscoasters.net/forum/f82/my-boomerang-coaster-16001/
