Bearings

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

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
| | | |

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…

AbsoluteBLACK  Hollowcage $700 OSPW leaves company reputation in tatters
| | | | |

AbsoluteBLACK Hollowcage $700 OSPW leaves company reputation in tatters

AbsoluteBLACK (real name LUCID IP SLU registered in Andorra) 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
|

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
| | |

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
| |

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…

End of content

End of content