More about stuck seatposts

More details on removing a stuck seatpost. Reader Andrew Livingston has refined the information Matt Duff sent us on using caustic soda to dissolve (yes, dissolve!) a stuck aluminum seatpost in a steel frame.

Shimano 3-speed hubs

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.

Shimano Nexus SG-3D55 3-speed hub.
Shimano Nexus SG-3D55 3-speed hub

RideWithoutGPS

Just Say No to GPS!
Just Say No to GPS!

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!

Unthreaded bottom-bracket update

Ashtabula bottom bracket
Ashtabula bottom bracket

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.

LED headlight update

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.

A pair of ultra-cheap bicycle lights
A pair of ultra-cheap bicycle lights

Update on direct-pull brakes (“V brakes”)

Shimano Parallel-Push V-Brake
Shimano Parallel-Push V-Brake

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.

Raleigh Twenty page expanded

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.

Sheldon Brown's 8-speed Raleigh Twenty bicycle
Sheldon Brown’s 8-speed Raleigh Twenty bicycle
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