FRC Window Motor 9 Spoke Hub

thingiverse

This model is designed specifically for the First Robotics Competition and is engineered to work perfectly with the 9-spoke Windows Motor. It attaches directly to the Belt Driven pulley used in the 2013 KoP Chassis or any AndyMark supplied hub, utilizing the same bolt pattern as aluminum and plastic hubs. Based on previous design testing, this part has been thoroughly re-designed for added durability. The holes are precision-crafted at 0.26" for secure nut and bolt fastening, ensuring a tight fit with the window motor gear. Printed in PLA, it can also be produced in ABS. UPDATE: April 5, 2016 This model was specifically designed for FRC Team 3147. To test its durability, the hub was subjected to an abuse test at 10% infill and successfully withstood full rotational loads from a window motor. This involved attaching a metal bar to the hub and locking both ends before applying power to the motor. UPDATE: April 11, 2016 Despite previous success, the hub finally broke when printed at 65% infill due to excessive heavy rotational mass (as shown in recent posted photo). It is recommended to print with solid infill for guaranteed durability. This design can also be used as an evacuation casting for aluminum or steel. Print Settings: Printer: Flash Forge Rafts: Doesn't Matter Supports: No Resolution: .1 Infill: 10% - 80% (mine is printed at 10%)