New article about the SRAM G8 8-speed internal hub gear 
— all you need to know to install this hub: specifications, gear ratios, parts compatibility and availability, how the mechanism works. As far as we know, this is the one place on the Web where you can find all this information. And if you happen to read German, we have an absolutely terrible pun for you too. Achtung, indeed!
Tag: Sheldon
Unthreaded bottom bracket dimensions
New cribsheet page with dimensions of unthreaded bottom brackets, and compatibility information.
Kryptonite history
Just posted — an article on the invention and early history of the Kryptonite bicycle lock — including numerous illustrations, and interviews with Stan Kaplan, the inventor, and Michael Zane, who commercialized the product.
ShelBroCo Dent Removal System
A prized, classic steel bicycle frame with butted tubing (thick-walled at the ends for strength, thin-walled in the middle for light weight) is easily dented, but ShelBroCo has a fix — it’s quick, effective and easy to use! http://sheldonbrown.com/dent-removal.html
Leather saddle update
Major additions to our page on leather saddles — descriptions and photos of different Brooks saddle models, comments on other brands, lots more advice on adjustments and leather care.
8-speed Shimano hubs — update
We have updated our page on Shimano 8-speed hubs. Shimano changed a number of links and posted some new information.
How the i-Motion 9 hub works
New section on how the SRAM i-Motion 9 hub works in the article about that hub.
New article and paper by Osman Isvan
New article by Osman Isvan introducing and summarizing his series of technical papers about bicycling propulsion, wind, hills and measurement techniques. And a new paper about measurement, too.
Biopace chainrings
We like Shimano Biopace non-round chainrings, and they are reliably available on eBay. We have expanded our article on how to choose and use them.
Handlebar stems…
Major additions to our article about handlebar stem choice and adjustment.
