Bicycle bottom brackets

From
Part: Bicycle bottom brackets
Adapter-bicycle-bottom-bracket.png
Designer: Timothy Schmidt
Date: 2020
Tools: 3D printers

Introduction

The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. It contains a spindle to which the crankset attaches, and the bearings that allow the spindle and cranks to rotate. The chainrings and pedals attach to the cranks. Bottom bracket bearings fit inside the bottom bracket shell, which connects the seat tube, down tube and chain stays as part of the bicycle frame.

Challenges

Approaches

Parts

SHIMANO UN55 BB Square Taper Bottom Bracket

References