SRAM GXP: An Engineering Guide to abysmal manufacturing

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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 […]

Grease for Bicycles: A practical guide to bearings and assembly

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Table of Contents IntroductionLubricating Grease (Bearings)Assembly Grease (Anti Seize) Grease as a Water repellantGrease Composition (Lithium, Teflon, Copper etc)Carbon Grease / Fiber PasteRecommendationsRecommended brands Introduction Grease is an often talked about but little understood. It can have a significant impact on performance on a bike specifically in the area of transmission frictional losses (watts). This […]

Bicycle Wheel Power Data 50km/h

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Over several years, bike wheels have been tested for aerodynamic performance. To date, this is the largest independent dataset available. Popular brands such as DT Swiss, SwissSide, Shimano, Mavic and Bontrager have all been tested. This dataset was originally derived from wind tunnel test data but has latterly moved over to Dinitriev number with a […]

Bicycle Wheel Power Data 30km/h

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Over several years, bike wheels have been tested for aerodynamic performance. To date, this is the largest independent dataset available. Popular brands such as DT Swiss, SwissSide, Shimano, Mavic and Bontrager have all been tested. This dataset was originally derived from wind tunnel test data but has latterly moved over to Dinitriev number with a […]

Winspace Hyper X Wheel Teardown

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The Winspace Hyper X 50mm are highly regarded, they have very good aerodynamic properties and are comfortably the fastest wheels you can buy in 50mm rim depth. The Winspace hubs use standard 6000 series bearings of common sizes. This video shows you how to remove the bearings and replace them if they are worn or […]