Ceramic bearings are being seen on bicycles and other hobby equipment, such as fishing reels, slot cars, and roller blade wheels. Ceramic bearings are available in most sizes of bicycle cartridge bearings. The cartridge bearings usually use steel inner and outer races, with ceramic bearings between. Ceramic bearings can also be purchased as loose ball […]

The key difference is in how the two thread into the bottom bracket shell. Like pedals, one side of a BSA standard bottom bracket shell is reverse (left) threaded, while both sides of an Italian standard bottom bracket shell are regularly (right) threaded. The size of the shell is also different, with BSA bottom brackets […]

T47 Bottom Bracket T47 bottom brackets are fairly new to all of us. Two advantages of the T47 system are that it can be used across a large spectrum of frames and with almost any crankset. Wheels Manufacturing currently offers T47 cups with either inboard bearings or outboard bearings. Both types of cups can accept […]

Understanding the 30mm Crank Spindle There are several 30mm Crank spindles on the market today with more to come. Below is a list of a few of them currently on the market today: Rotor 3D30 – length 110mm Rotor 3D+ – length 148mm to 158.5mm Rotor 3DF – length 148mm to 158.5mm RaceFace Cinch / […]

Shimano Direct Mount Derailleur Hangers These hangers replace both the standard hanger and the Shimano B-Link, offering a simpler, yet stiffer attachment of the derailleur to the frame. Additional benefits are quicker wheel changes and more precise shifting. Currently, Specialized, Kona, Trek and Donnelly do not offer direct mount hangers for these frames. Wheels Manufacturing […]

Alterra Junior Cycling Team ​Alterra Home Loans Junior Cycling Team’s mission is to build stronger, healthier communities for the future through the sport of bicycling. They seek to expand the capabilities of youth from communities where exposure and access to this sport and lifestyle are limited. Their goal is to provide the lessons that will […]

Eccentric Bottom Bracket An eccentric bottom bracket is actually an adapter that converts your PF30 or BB30 bottom bracket and allows users to adjust the fore-to-aft position of the crankset to add tension to their chain. This is done by rotating the off-center (or eccentric) axle position within the round frame shell to move it […]

BBRight Bottom Bracket BBRight™ is a bottom bracket standard developed by Cervelo that uses Pressfit30 bottom brackets where the bearings are housed in press-in composite or aluminum cups, which are in turn pressed into the frame. Shell width: 79mm (Asymmetrical +11mm on Non-Drive Side) Shell inner diameter (ID): 46mm Two 6806 bearings (42mm OD, 30mm […]

BB86/92 Press fit bottom bracket frame shells use a simple bore with no internal threading. Shells of the PF41 standard have a smooth bore with a nominal 41mm inside diameter. This places the bearings 86mm apart – the same distance as its screw-in external bearings. But the BB86 bearings are totally enclosed within the bottom […]

Threaded Bottom Brackets Threaded bottom brackets use a shell with internal threads to hold threaded parts. The frame shell may be threaded directly at the shell, or there may be an insert installed that has internal threads. Typically threads are BSA (1.37″ x 24tpi), Italian (36 x 24tpi) or French (35mm x 1). Most of […]