Bottom Brackets

SRAM GXP Cranksets: An Engineering Guide
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SRAM GXP Cranksets: An Engineering Guide

This article will cover the technical and engineering aspects of SRAM GXP. Sram GXP is a very popular crankset standard used by SRAM. It offers an industrial based bearing arrangement and was touted as having the lowest weight and rolling resistance of any crankset bottom bracket standard. The engineering will be analysed in detail. Currently…

Ceramic Bearings vs Steel Bearings: An Engineering Analysis
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Ceramic Bearings vs Steel Bearings: An Engineering Analysis

One of the most controversial topics in the cycling industry is with regards the topic of Ceramic bearings and whether they do or do not reduce friction dramatically in riding. This article will address some of the concerns and topics associated with this debate and quantify the numbers. Internal Bearing construction – Ceramic bearings are…

Bottom Bracket Pressfit and Creaking, an Engineering Analysis
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Bottom Bracket Pressfit and Creaking, an Engineering Analysis

If you are reading this you will have probably already come across the numerous posts by various individuals in Internet forums across the web. The issue of creaking bottom brackets has been blamed on the introduction of pressfit and directfit bottom bracket standards, where bearings either push directly into the bike frame or push into…

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