Floating arm trebuchet

cults3d

My wife asked me for creating trebuchete for lesson of physics, and I found this type of trebuchet, so I designed it for 3d print. For build I used china chopstick make from bamboo (top dimension is 7 * 5mm, 21cm long), Bearings 8x22x7mm (608ZZ), one 5-80mm screw with hexagon head and safety nut, 12x 3-12mm screws, 5x 3-40mm screws, 4x 3-18mm and 21 3mm nuts and some small spring (5mm diameter). As weights I used weight stoppers from dumbbell set (inner diameter 22mm, together 500g) and about 250g of fillament (PLA) All parts is printable without supportst, but must be placed to propriete position. Sling was maked by my whife (don't ask me how :-) I measured range of trebuchet - 3 g projectile flyed 18.5 m