FUJI Transonic One.1: Engineering Roast
The FUJI Bikes Transonic ONE.1 came in for an engineering roast. This wasn’t the worst that has ever come into Hambini HQ.
Bottom Brackets
Giant TCR roasted: More Crap Quality Control
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.
Engineering Analysis: Grease or Retaining Compound
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.
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….
Bearings | Bottom Brackets | Media | Reviews | Technical
Cannondale Systemsix Custom Bottom Bracket PF30A Shimano
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.
Bearings | Bottom Brackets | Cranksets | Media | Technical
Hambini Bottom Bracket Install: Yoeleo R12 Disc Kyro’s House
Fresh from YouTube is another Hambini Bottom bracket install. This time in a Yoeleo R12. This is a revision of the R11 bike Frame that The Unabiker had issues with and it highlights the problems of frame tolerances. The bottom bracket is made to much tighter tolerances than the frames they are pushed into.
Yoeleo R11 Undersized Bottom Bracket fixed
Here is a video posted by The Unabiker on YouTube. In it he describes some of the problems he had with his Yoeleo frame and specifically trying to fit a Hambini Bottom Bracket into it. Yoeleo have historically had decent tolerances but it shows that nobody is immune. The check to get it fixed and…
Bearings | Bottom Brackets | Cranksets | Reviews | Technical
Teardown: Campagnolo Ultra Torque Crankset Mechanics explained in Depth
Campagnolo cranksets have a reputation of being well engineered and robust but they are not without their problems and quirks. This post explains one of those in detail which surrounds the myths of the preload system, the “safety clip”, the system stiffness (or lack of it) and the involved nature of a bearing replacement. Campagnolo Ultra Torque is found on many of the upper range of Cranksets including the Super Record and Record.
Hambini BB30A Cannondale CAAD Installation
StylishRiding, a viewer of the Hambini Channel videoed their installation of a Hambini BB30A to Shimano bottom bracket and uploaded it. You can view it below
Teardown: ROTOR 2InPower Crankset 30mm
This Teardown covers the Engineering behind the ROTOR 2InPower 30mm Crankset. It focuses on the materials, manufacturing, tolerances,, bearing preload system and system stiffness.
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