Fixed gear, singlespeed

All of our pages about fixed-gear and singlespeed bicycles have been updated. Information about derailerless drivetrains including workarounds for frames with vertical dropouts has been consolidated in a single article and expanded. Table of contents for these articles.

One of Sheldon's fixed-gear bicycles
One of Sheldon’s fixed-gear bicycles

Tandem Updates

Pages about tandems and tandeming Sheldon Brown and family on home-built tandems[/caption] have been updated. We have more about disc brakes, brake levers, Gates synchronizing belts, and details about upgrading a cheap beach-resort tandem to ride with a child.

Sheldon Brown and family on home-built tandems
Sheldon Brown and family on home-built tandems

Steel frame repair

Aluminum, titanium and carbon-fiber frames are fashionable, and generally lighter than steel frames. But if you are on a bicycle tour to a remote area, the ability of any small-town welder to perform an ugly but functional repair on a steel frame could allow you to continue. You may be able to straighten a bent frame yourself. Read about it here.

John Schubert speaks up for steel
John Schubert speaks up for steel

Tricycles for Grown-ups

New article describes the various kinds of tricycles, their features, advantages and disadvantages. Tricycles are especially useful for carrying heavy loads and for people who for one reason or another cannot balance a bicycle. Tricycles can also be sporty and fast.

Sheldon Brown takes his Greenspeed tricycle off-road
Sheldon Brown takes his Greenspeed tricycle off-road

Bicycle generators

Shimano Alfine hub generator
Shimano Alfine hub generator
Generators for bicycle lighting — new article by guest author Frank Krygowski. Advantages and disadvantages compared with batteries; types, history, installation.
Busch & Müller Dymotec tire-sidewall generator
Busch & Müller Dymotec tire-sidewall generator

A brief history of bicycle lighting

Updated and expanded: a brief history of bicycle lighting, from candle lamps to LEDs.

Kerosene bicycle lamp from around 1895
Kerosene bicycle lamp from around 1895

Updates to chainline and frame-spacing pages.

As of 2018, fatbikes and disk brakes have led to several new axle-length standards. The problem of disk brakes’ pulling the hub out of the front dropouts  has been addressed with thru axles, which insert into a fork with a hole rather than a slot at the end of each blade. Our chainline page and cribsheet as well as our frame spacing page and cribsheet  are now updated to cover these developments.

Chainline diagram
Chainline diagram
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