Several tire sizes have been added to the Gear Calculator:
Fatbike sizes: 26 inch tires, 26 x 3.8, 4.0, 4.25, 4.7
Wide 29ers: 29 x 2.7 and 3.0
32 inch and 36 inch (common on unicycles).
Tag: gearing
SRAM and Sachs Internal-gear hubs
Updates to our main page on Sachs and SRAM hubs , and our page on the G8 and G9 hubs. We have located additional technical information from SRAM, and wehave fixed a number of Web links that went bad.
Sturmey-Archer Pages Updated
Major update to the Sturmey-Archer pages:
* fixed links which S-A broke by redoing its Web site (that’s everything about current hubs).
* updated the list of hubs.
* Added new technical information.
Our cribsheet of hub model names and descriptions is a good place to start.
Addition to page on SRAM G8 and G9 hubs
John has added some owner comments to the page on SRAM G8 and G9 internal-gear hubs. Opinions are generally very positive.
Click to re-order spindle list
The list of Sturmey-Archer indicator spindles now sorts either on the part number or on the spindle length, with a mouse click.
Edit to cable travel adapter cribsheet
The cable travel adapter cribsheet has been edited to include more information, and links.
Wandering the show floor at the Interbike trade show
It took a few days to finish — the big page about products of interest seen on the show floor at the Interbike trade show.
SRAM G9 Hub
Our article about the SRAM G8 hub now also covers the new G9 9-speed.
Home-brew hybrid gearing
Additions to the article on internal-gear hubs — more about how to construct a multi-speed hybrid-gearing system using a stock 3-speed hub and two sprockets and/or two chainwheels. It indexes even without index shifters! Photo courtesy of Mark Stonich.
SRAM G8 Hub
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!
