Marble Roller Coaster

thingiverse

UPDATE: I've doubled the diameter of the Archimedes screw shaft to make it more durable. I've also added a hex boss for the spur gear to attach. The updated files are: marble-coaster-lift-v2 marble-coaster-screw-v2 marble-coaster-lift-top-v2 marble-coaster-spur-gear-v2 Lego compatible marble roller coaster with Archimedes screw lift. Should work with 14.5 to 16.5mm diameter marbles or bearings. These have a very tight fit with real lego pieces with my printer (your mileage may very). Uses <a href="https://www.amazon.com/UniHobby-Uniaxial-Support-Bracket-Compatible/dp/B072HRR8W4">this Lego TT motor.</a> <b>Parts required for lift (see post printing notes):</b> marble-coaster-lift-v2 - 1 marble-coaster-screw-v2 - 1 marble-coaster-lift-top-v2 - 1 marble-coaster-pinion-gear - 1 marble-coaster-spur-gear-v2 - 1 marble-coaster-lift-ramp - 1 <b>Parts required for short track:</b> assembled lift - 1 marble-coaster-straight - 7 marble-coaster-short-straight - 1 marble-coaster-ramp - 6 marble-coaster-180 - 3 marble-coaster-180-banked - 1 marble-coaster-90 - 3 marble-coaster-90-banked - 1 <b>Parts required for long track with switch:</b> All parts from short track minus two 180s marble-coaster-switch - 1 marble-coaster-switch-blade - 1 marble-coaster-180-short - 2 (these are used right after switch) marble-coaster-short-straight - 1 marble-coaster-ramp - 3 marble-coaster-90 - 2 marble-coaster-90-banked - 1 marble-coaster-short-straight - 1 marble-coaster-90-drop - 1 <a href="https://www.youtube.com/watch?v=UGM11HRtNd8&feature=youtu.be">Video</a> <a href="https://youtu.be/KAiXlIsNeoY">Video of version 2.0 with track switching</a>