cogs

Perhaps now you can understand why you may find yourself with only a single front chainring sometime down the trail

Also: needing more rear offset, 52x34 on a double, amateur tool kits

Also: Gearing for Mt. Washington

We all know you push your bike to the limit. Singletrack.com's Lennard Zinn explains how to check for wear on cogs to ensure maximum performance.

Learn the tricks of the trade as Singletrack.com's Lennard Zinn details the installation of cogs.

Lennard takes questions on rear-wheel spacing, removing a tubular without harming it and mystery noise from a Zipp wheel.

Should I rebuild my Campy 8-speed shifter, or switch to 10-speed?

Dear Lennard,
I've just read your article article about the SRAM ceramic bottom bracket and its maintenance. We at CeramicSpeed have been working with ceramic bearings for the past 11 years, introducing systems for bicycle applications eight years ago.

Dear Lennard, Question for you re: forks for long head tubes. I'm 6'4" and have a Seven Axiom with a roughly 30cm head tube and a Seven rebadged Reynolds carbon fork on it. It is a bit flexy when braking while cornering and I'd like to improve that. What options are out there and how do they rate vs. each other? I know Alpha Q makes one with a steerer long enough (as seen on your bike) as does Storck, but want to understand if they are better than the Reynolds vis a vis flex/rigidity. Ted Dear Ted,