We have updated our page about Shimano 3-speed hubs. Shimano redid its Web site and broke all the links to technical information. We have repaired the damage and added a few more links, tips and tricks as well.

What's new at sheldonbrown.com
We have updated our page about Shimano 3-speed hubs. Shimano redid its Web site and broke all the links to technical information. We have repaired the damage and added a few more links, tips and tricks as well.
Technology can just get to be too much. Do you lose valuable riding time fiddling with your phone or GPS device? Bet you do. The battery will run out, sooner or later. On some unfamiliar backroad. Off-roading deep in the forest. Navigating a thicket of congested urban streets.
It’s time to get back to basics with ShelBroCo RidewithoutGPS, the Navigation System That will Never Let You Down. Buy your ShelBroCo RideWithoutGPS kit Now and never worry about getting lost again!
New information has been added in our article about inner tubes on how to check for installation problems which could lead to failure of an inner tube.
More additions to the Raleigh Twenty article: how to attach fenders and the rear rack.
Major update to the unthreaded bottom bracket cribsheet: several additional ones covered, broken links repaired. yes, everything from Ashtabula one-piece crank BBs (as shown in the photo) to the Klein Team Super to eccentrics for tandems.
Additions to the page about LED headlights — lots of new information, about why lights which are well-designed for nighttime use can be good as daytime running lights, but some that are impressive in daylight don’t do so well at night; about ultra-cheap lights, how to make them pay for themselves adn which kind is preferable; installation and adjustment.
Sheldon started keeping an online journal on November 8, 1998. He posted synopses of his thoughts and activities, comments on books, films, TV shows, and music both live and recorded. He wrote his final note on the day he died, February 4, 2008, 9 years ago. The first page, from 1998, links back to a “1975 Retrospective,” which links in turn to a “1971 Retrospective.’
He used the photo here in the 1971 retrospective — a selfie — from 1971. Sheldon was way ahead of the crowd with selfies!
Sheldonbrown.com makes a point of providing information which is hard to find elsewhere and which will help keep older bicycles working like new — or better. Shimano Parallel-Push V-brakes have a very nice feature in that the brake shoes approach the rim squarely rather than rotating, with the risk of damaging the tire or diving under the rim. Reader Paul Rintoule has kindly sent in information on how to refurbish Shimano parallel-push direct-pull brakes to stop them from squealing, even though Shimano parts kits are getting very hard to find. This information has now been added to our page about direct-pull brakes.
Our page about Raleigh Twenty bicycles has been expanded with two new sections, about the hinge and the rear rack. Find out why the humble and disdained Pletscher rear rack works great on a Twenty, and how to make a replacement for a missing hinge key.
The Shimano 3-speed hub page has been updated with coverage of the SG-3R75 pulley-shifting hub including drive ratios. The gear calculator pages also have been updated.