Category Archives: Updates

Cyclecomputer and GPS accuracy

New page about the history of distance and speed measurement on bicycles, and the limitations of accuracy in measurement. Did you know that GPS readings wander, so you can rack up some distance even if you are standing still?

Posted in Updates | Leave a comment

Cyclecomputer database

Our pages of cyclecomputer instructions have now been brought completely up to date, with links to user manuals for almost every make and model, including GPS. These pages are a unique resource.

Posted in Updates | Tagged , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , | Leave a comment

Additions to the Gear Calculator

New crank lengths have been added to the Gear Calculator and Internal Gear Calculator, so they can calculate gain ratios for children’s bicycles with cranks down to 100 mm (less than 4 inches).

Posted in Updates | Leave a comment

More hubs in cable-pull cribsheet

Added information on four hubs to the internal-gear hub cable pull cribsheet: Shimano Alfine 11-speed SRAM G9 Sturmey-Archer S3X Sturmey-Archer ASC Thanks to Jeff Meredith and Michael Wilson for the measurements!

Posted in Updates | Leave a comment

Measuring tricks

We have a new article on how to perform the precise measurements needed to determine whether bicycle parts fit each other, without expensive and fragile tools. There are a number of clever tricks — for example, you can test the … Continue reading

Posted in Updates | Leave a comment

Reorganization of headset tables

Our tables of headset sizes have been reorganized to make it easier to determine which headset can be made to fit which frame and fork. Fork crown race seats can be milled down and head tube race seats can be … Continue reading

Posted in Updates | Tagged , , , , , , , , | Leave a comment

Shimano 4-speed hub gears

Expanded coverage of Shimano Nexus 4-speed hub gears — we now have rebuilding information, translated from manuals in German which are the only ones we could find online — complete instructions for both the freewheeling/Rollerbrake version and the coaster brake … Continue reading

Posted in Updates | Tagged , , , , , , , , , , , , | Leave a comment

Shimmy, or speed wobble

A new article on shimmy, or speed wobble — what it is, why it happens, how to prevent it and how to recover from it.

Posted in Updates | Tagged , , , , , , , | Leave a comment

More tire-sizing updates

http://sheldonbrown.com/650b.html : added more info on “27 five” tires, and a photo (thanks to Aaron Goss!). http://sheldonbrown.com/tire-sizing.html : added several tire sizes

Posted in Updates | Tagged , , , , , , , , , , | Leave a comment

Sheldonbrown.com’s angle on the Trek quick-release recall

Sheldonbrown.com’s angle on the Trek quick-release recall. This addresses technical issues which we haven’t seen covered in news reports.

Posted in Updates | Tagged , , , , , , , , | Leave a comment