Bottom Brackets

  1. Bottom Bracket Pressfit and Creaking- An engineering Opinion

    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 cups which are then pushed into the bike frame.

    General guidance varies from taking everything out and regreasing it to installing with extreme measures such as epoxy resin.

    Pressfit is not the problem and threaded is certainly not the answer...

    The reality is pressfit has nothing to do with creaking. There are many areas of a bike where bearings have a pressfit and there are no problems. For example, wheels, freehubs, pulley wheels and some headsets are pressfit yet they don't generally creak.

    The basic reason for the creaking is one of two reasons, either a poor fit or misalignment. Often, the two occur at

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  2. Professional Bike Engineering Tools

    This video which I have posted to youtube gives you an overview of some of the tooling I have which assists in making bike/car parts. Watch and Enjoy!

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  3. Case Study: Fixing a Trek Madone BB90 Bottom Bracket

    In this video, I take you through the engineering that I went through to fix a Trek Madone BB90 bottom bracket. You get to see some of the real engineering decisions involved in trying to get a fix at a reasonable cost. 

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  4. Filament Bike Frames - Warranty

    Please note, I will not warranty the fitting of any Hambini Bottom Bracket on any bike frames made by filament bicycles. A recent experience involving a customer with a frame has led me to believe the quality control and assurance practices they use are not in line with engineering best practices. Furthermore, the way the individual in charge of the company deals with issues is sadly lacking. 

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Hambini Engineering, Unit 11386, 13 Freeland Park, Wareham Road, Poole, Dorset BH16 6FH UK