Mountain Bike

thingiverse

This mini bicycle is designed to be sturdy and customizable. All components have been successfully printed; only the rear frame needed supports. View a video of it in action at http://youtu.be/AnqlYZzgOo0. Assembly is now complete, although natural PLA color may not be as desired. New cranks and pedals provide a better fit but remain untested. The rear wheel and frame can now be printed together, with a modified design available. Sketchup files are provided for further customization. Assemble by fitting the chain ring to the cranks, snapping on pedals, joining front and back frames using 2mm screws (5mm and 15mm length respectively), securing the front wheel with a 2mm screw (15mm length), attaching the sprocket in the rear wheel and frame (opening the frame slightly for insertion), fastening with a 2mm screw (20mm length). Place saddle (glue if desired) and fit fork into front frame, securing handlebar with glue. Use a rubber band or thin rope as a chain, looping it through the rear wheel's clearance and gluing ends together with cyanoacrylate-based glue. Print big parts at .2 layer, 15% infill, 2 shells; smaller parts at .15 layer. Some sanding might be needed for part removal, especially from the rear wheel. Different hole sizes allow for screw insertion.