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.

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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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New coverage of Shimano 3-speed

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.

Shimano Nexus SG-3D55 3-speed hub.

Shimano Nexus SG-3D55 3-speed hub

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Spocalc spoke calculator and Web page updated

Update to Damon Rinard’s Spocalc Spoke calculator — new advice on fatbikes and hub motors, more spoke calculators for mobile devices added to the list at the bottom of the page, correction of a minor math error (display of bracing angle for radial spoking).

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Fatbike frame spacing

Thanks to reader Rick Paulos, we now have information on overlocknut distances for fatbikes. We have added this to our page on frame spacing

Overlocknut distance

Overlocknut distance

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Save

Save

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Major update to Shimano 8-speed IG hub page

Our page about Shimano 8-speed internal-gear hubs now includes information on the new hub models. The table listing hubs has a new column indicating which cassette joint or motor unit works with each hub, and which hubs have interchangeable internal parts.

Shimano Alfine 8-speed hub

Shimano Alfine 8-speed hub

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Why did this crash happen?

New page — why did this crash happen?

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Gear Calculator now supports 12-sprocket cassettes

Update to our gear calculator. It now supports custom 12-sprocket cassettes, and has a listing for the stock SRAM 12-sprocket cassette. Not that we really think that thin sprockets, with a flimsy chain, are a good idea!

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More tire sizes

We’re added some bicycle tire sizes (mostly, rare Dutch sizes) to the ISO cross-reference list in our tire-sizing article. We think we have all currently available sizes covered, but if you know of others, please let us know.

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Updated information on drivetrain compatibility

Our article about cassettes has been updated to include information on 11-speed systems. Interesting — all major brands of 11-speed casettes now have the same sprocket spacing. Most rear derailers and shifters are not compatible, though. We can tell you which ones are.

Shimano cassette Freehub

Shimano cassette Freehub

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