Bearings

Madison Genesis Titanium Threaded Bike Gets Reamed
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Madison Genesis Titanium Threaded Bike Gets Reamed

A cyclist sent in this Madison Genesis Le Croix titanium bike frame in for a bottom bracket fix. This bike had been through bottom brackets at an alarming rate and the non drive side was visibly damaged. Some further checks were carried out and some issues around stress relief were highlighted. Eventually fixed.

BB30A83 Custom Bottom Bracket Designed and Manufactured – Cannondale Topstone
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BB30A83 Custom Bottom Bracket Designed and Manufactured – Cannondale Topstone

A Hambini viewer recently enquired about a bottom bracket for his Cannondale TopStone Gravel bike. This bike uses a BB30A83 bottom bracket. A design which is highly unusual, extremely rare and unique to Cannondale. From the frame centerline, the driveside and non drive side apertures have an asymmetrical offset – hence the “A” in BB30A83….

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

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…

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

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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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…

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