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Shimano Crankset Failures: An Engineering Analysis
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Shimano Crankset Failures: An Engineering Analysis

Introduction Shimano have had some issues with their high end cranksets in recent times. It seems as though the Ultegra and Dura Ace cranksets are the primary units affected. There have been many reports of the cranksets fracturing in half. Some of these have been under modest load on turbo trainers whilst others have been…

Hambini Bottom Brackets get roasted: Bottom Bracket Review and Quality Control
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Hambini Bottom Brackets get roasted: Bottom Bracket Review and Quality Control

This video uploaded by youtuber Peak Torque shows a Hambini BB having it’s engineering tolerances judged. Some key points It’s a BB86 Shimano Racing Edition Bottom Bracket The bottom bracket tolerances are accurate to 0.005mm, that is less than the diameter of a human sperm cell. The eccentricity was found to be 0.010mm (0.0005inch), the…

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