Author Archives: John

Plotting sprocket pairs and ratios as a two-dimensional graph makes it possible clearly to see which pairs have nearly the same ratio — and to identify good sequences. We have a graph and an article to describe it. />  

Now for the first time, we have created a page that shows and describes the different types of cassette bodies all the way from early Uniglide up through the latest 11- and 12-speed systems. There is far more compatibility than … Continue reading →

We have expanded our coverage of repair of leather saddles — several new photos and paragraphs of text. Also, in case you would rather not repair your saddle yourself, we have updated information on where to send it. The saddle … Continue reading →

We continue with our postings from the lost pages of the Sutherland’s Handbook for Bicycle Mechanics, 6th Edition — this time, the rebuilding instructions, parts list and troubleshooting chart for the Sachs/SRAM Pentasport 5-speed hub.

It is no wonder that cyclists choose to ride in the comfort, safety and privacy of our own homes. Yes, stationary bicycles are popular. But, if you are going nowhere, how about doing it at a relaxing pace? ShelBroCo has … Continue reading →

Sheldon Brown died on February 4, 2008. It’s hard to believe 14 years have past since then. This is a picture of Sheldon at a younger age. That isn’t a mouse under his front tire. Selfie pioneer — he tripped … Continue reading →

The SRAM DualDrive hub was the mainstay hub for hybrid gearing for 15 years, from 2000 through 2015. Very many are still in use. Read here about how to install, adjust and adapt its unusual shifting parts.

Our page on ways to measure bicycle components can save time and avoid the need for  some expensive tools. We have now added information on how to compare chains. And the example in the photo here:  How to determine  the … Continue reading →