Pulley X

thingiverse

Hey everyone. this is a pulley i designed in tinkercad, very simple, yet very functional. Parts: 608 ball bearing ( from rollerskate or kickscooter) 2 M8 screws ( upper should be longer if you want to tie it with rope, 37 mm minimum) 2 M8 nuts 3 M8 washers, 15 mm wide, 1.5 mm thick. 3D prints: Pulley x Pulley x(1) Pulley x(2) And some rope :) I used rope to fix it to the upper screw, you could buy a metal part for that, i didnt need it. Rope is ok. I have it tested for 22 kilos. i have two bricks hanging on it for couple hours now. I plan some more tests tomorrow. On my printer holes for screws need a bit drilling. update: v2 parts have more space to anchor the rope. I anchored it on the screw, its stronger i've added another 3 kilos so now its 25 hanging outside. Update 2: I've put about 30 kilos on one pulley and left it over night like that. withstood. I have connected 3 now and it works really nice. ill test more weight when im done with demonstration. Update 3: You can check out the video. I made a 6 to 1 system. I used 12 cm m8 screws, conected " pulley_x_v_2.0_3.stl " one time for one side and " pulley x v 2.0 _2 " 3 times with 3 times " pulley_x_v_2.0_1.stl ". That is for one side. You need all these X2 to form a six to one ratio. A lot of nuts and washers. Check out the video.