Bicycle Chain Pulley

thingiverse

This is a pulley that I created for Cal Poly Pomona's Human Powered Vehicle. It may be of limited use to you since it caters to a very specific need, but I thought it would be awesome to let people print it out and play with it. Think of it as a fidget toy, as it does utilize the same sized skateboard bearings. You might want to glue the two halves of the pulley together so that the parts don't come loose, but if it is not under stress you can leave them as they are. Note: In Cura 2.x.x, I have yet to figure out how to split items, so I printed the pulley assembly in Cura 15.x.x Required items: - Skateboard bearings - 608zz (I used ABEC 5's, but it's designed to fit all ABEC levels) - 1- 8mm bolt and nut (You can use some sort of 8mm dowel or 3D printed rod if you prefer) Overall, this was a fun project to work on as I got to utilize dovetails and other design features that I never really used before. I also thoroughly enjoyed seeing the actual part on the Human Powered Vehicle function and fail and be replaced in a timely manner. Please feel free to leave any comments regarding any issues you're experiencing. Print Settings - Printer Brand: Wanhao - Printer: Wanhao Duplicator i3 V2 - Rafts: No - Supports: No - Resolution: 0.2 - Infill: 25% - Notes: Printed in PETG then with Nylon for added strength, but if you're using this item as a fidget toy, PLA should be sufficient. Note: Parts printed in nylon shrunk and threw off tolerances.