The Rim-Chuck 3000

The Rim-Chuck 3000 is a custom adjustable fixture for holding bicycle rims in a spoke hole drilling machine. It easily adjusts to hold an infinite number of rim sizes from 630(27”) to 349(16”) while keeping the rim centered on the machine.

The machine previously had exchangeable fixtures which were cumbersome and time consuming to exchange leading to excessively long setup times and product inconsistencies.

The Rim-Chuck 3000 stays on the machine at all times and has been in service 5+ years, only requiring occasional calibration.

Its design includes anodized dovetail slide ways, ACME lead screws and lead screw nut adjustment consideration for calibration, custom 1-input x 6-output central gear box, and changeable part platforms for unforeseen setup conditions.