Importance

Loading Importance Indicators...

Abstract

A rear shifting and drive system, frame drop out, derailleur hanger and derailleur alignment tool provided with an axle attachment adapter/structure, a moveable collimated light source, and a collimated light source positioning linkage. The axle adapter/structure is attachable to a bicycle wheel axle and is rotationally moveable about the axis of the bicycle axle. The light source is moveably coupled to the axle adapter/structure by the light source positioning linkage, to move in a direction substantially parallel to the axis of the bicycle rear axle. The light source is positioned to shine the cross laser simultaneously on the axle or plane of the axle and the system components of the shifting and drive system. A visual vertical alignment of the cogs of the cassette, and derailleur jockey wheels, to each other in each shifting position, and relative perpendicular to the axle or plane of the axle provides an easy visual aid in assessing the relative positions and orientations of the components. As such, worn, damaged, bent, broken or maladjusted components of the shifting and drive system can be assessed and adjusted, repaired or replaced without disassembly of the shifting and drive system.

Loading the Abstract Image...

First Claim