Double 775Pro DoubleBack CIM-SIM-CIM-ile

grabcad

This text explains how to create a custom gearbox using 775Pro motors and a Vex 3CIM Ball Shifter, enabling more space in the center of your robot for balls and totes. The design features include mounting like a CIM, a 3.3:1 added ratio from 775Pro to CIM-like shaft, replaceable motors without gearbox removal, air paths for cooling the motors, multiple positions to mount on the 3CIM Ball Shifter, ball bearings for smooth operation, and viewable gear mesh without disassembling the gearbox. The necessary parts include specific 775Pro and CIM gears, motors, screws, and 3D printed housing components. Additionally, Solidworks files are included in a ZIP file. An update is mentioned for fixing a housing issue, and another update discusses testing the use of three 775Pro motors instead of two CIMs.