High End Bike Shop trashes a Parlee Z5 frame by using Epoxy to fix a creaky bottom bracket

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Parlee Z5 Epoxy Repair

A high end bike shop in London decided it would be a good idea to fix a customer’s Parlee Z5 bike frame by using Epoxy to glue some Campagnolo bottom bracket cups in to the bike frame. What followed was a customer who was repeatedly going through bottom bracket cups – often in the space […]

AbsoluteBLACK Hollowcage $700 OSPW leaves company reputation in tatters

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AbsoluteBlack hollowcage OSPW

The Polish Company AbsoluteBLACK were destroyed on social media after their claims about ceramic bearings, power savings and watts were questioned. They systematically curated both their own social media accounts and comments on other accounts. They removed large numbers of comments that questioned their aerodynamic and power claims

Bike Bearing Grease: A Practical Guide to Bearings and Assembly for Bikes

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ball bearing in blue grease screen xl

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 guide covers the practical aspects of using grease as a lubricant and as an assembly aid. Following a number of questions arising from a […]

Ceramic Bearings vs Steel Bearings: An Engineering Analysis

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Bearing Terminology

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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angularmisalignment

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 […]

Testing to Find the Fastest Bicycle Wheel Hubs

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The aerodynamic performance of wheels often grabs the headlines and the marketing budget but the reality is the hubs and the bearings within them will have more of a performance differential for the average cyclist. As an example, the power differential between wheels of an equivalent depth at speeds of less than 35km/h will only […]