Shimano’s service instructions for the Nexus 7-speed internal-gear hub assume that you will replace the entire axle unit. Taking disassembly past the point where instructions are available is all too easy. You might also want to cannibalize parts to assemble one axle unit that works from two or more which do not. Reader Keith Lang has provided instructions in two PDF files. You may go to John’s introduction with links to those files..
Internal gear theory
John has posted his article on internal-gear hub theory, history and some practical advice. This article describes the internal workings of all the newest hubs including those with compound and multi-stage gearing.
Frayed cable
John has added a photo of a frayed cable to the article on cables.
Flats photos
John added photos of a frame pump, mini pump and CO2 inflator to flats.html.
Updates on chains and tandems
Pictures from the 2011 Larz Anderson Bike Fair
Pictures from this year’s Larz Anderson Bike Fair and Bike Swap can be found at
http://sheldonbrown.com/Larz2011/
More updates
John Allen has done some revisions to the articles on tires/tyres and added more information on GPS to the article on cyclecomputer calibration.
Sun Tour components
John has done a major update and expansion of Sheldon’s article on Sun Tour components.
Larz Anderson Bike Fair – 8/20/2011
Remember the Larz Anderson Bike Fair and Bike Swap:
http://sheldonbrown.com/images/bikeswap.pdf
Stuck seatposts
John has added information on yet another way to remove a stuck seatpost — dissolving it using a strong chemical.…
