Tag Archives: 7-speed

Updates to chainline and frame-spacing pages.

As of 2018, fatbikes and disk brakes have led to several new axle-length standards. The problem of disk brakes’ pulling the hub out of the front dropouts  has been addressed with through axles, which insert into a fork with a … Continue reading

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Gear Calculator updated!

Our gear calculator is now updated to cover the newest cassettes from Shimano, SRAM and SunRace. — Still to update: the French- and German-language versions.

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Update to Shimano 7-speed hub gear page

  Our Shimano 7-speed hub page is now updated to fix the links which broke when Shimano redid its Web site. We have also added information about new models, and made a few improvements in the text. All of our … Continue reading

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Sturmey-Archer 4, 5 and 7-speed hubs

We have updated our article about Sturmey-Archer 4, 5 and 7-speed internal-gear hubs to reflect changes in hub availability and new documentation.

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Upgrading to index shifting

We have a major update to our page on upgrading older bicycles to index shifting. This can be done at a lower cost than you may expect, because there is usually no need to replace the rear wheel! Shifter choices, … Continue reading

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Update on Shimano IG Hubs

We have updated our page on issues common to Shimano Nexus and Alfine hubs — new hub models, electronic shifting.

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More info on SRAM internal-gear hubs

More information on the SRAM S7 internal-gear hub — a reader has sent us links to step-by-step rebuilding information and model comparisons, with photos. The text is in Russian but the photos tell the story and then there’s Google Translate. … Continue reading

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Update to 5-speed hub information

Our Sturmey-Archer 4, 5 and 7-speed hub page has been updated with links to newly-available information on recent 5-speed hubs.

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Gear Calculator updated and now also in German

The Sheldon Brown gear calculator is updated and improved: more tire sizes are covered including fatbikes, 29ers, 29+ and monster bikes, and we now have a version in German, as well as French.

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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).

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