This Bowman Bicycles Palace frame was sent in by a viewer who had a failed chanset, Further investigations showed a frame that was in a dangerous condition, showing numerous welding and machining defects. Some of those could have been catastrophic
Paul Green of Paul Green Vlogs got in touch about some problems he’d been having on his Trek Checkpoint bike. He had gone through bottom brackets at quite an alarming rate. Almost four bottom brackets from different manufacturers had become unserviceable in a relatively short time. The failed bottom brackets consisted of a few Shimano OE units and most recently a Thread Together type BB from Wheels Manufacturing. The bottom bracket type was BB86 and the frame was made of aluminum.
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.
Introduction ICAN is a company based in Shenzhen, China that has been building carbon fibre sporting goods for many years. They originally started off as an OEM and have recently started to sell items under their own name. These products have predominantly been wheels and of late bike frames. The bike frame that was sent…
Introduction Shimano have had some issues with their high end cranksets in recent times. It seems as though the Ultegra and Dura Ace cranksets are the primary units affected. There have been many reports of the cranksets fracturing in half. Some of these have been under modest load on turbo trainers whilst others have been…
The FUJI Bikes Transonic ONE.1 came in for an engineering roast. This wasn’t the worst that has ever come into Hambini HQ.
The Giant TCR was long thought to be one of the best made bikes out in the market. This frame was a joke and highlights the poor manufacturing the average customer would not be able to see.
This article is a technical discussion of the pros and cons of using grease or retaining compound for installation of bearings and bottom brackets. A general trend in recent times has been a move towards slacker fits. This improves performance and service life.
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….
PF30A Cannondale Bottom Bracket designed and built by an individual who had a slightly oval bottom bracket aperture. This design also necks the center section to allow for more clearance for cables.
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