Tag Archives: planetary

SRAM and Sachs Internal-gear hubs

Updates to our main page on Sachs and SRAM hubs , and our page on the G8 and G9 hubs. We have located additional technical information from SRAM, and wehave fixed a number of Web links that went bad.

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Addition to page on SRAM G8 and G9 hubs

John has added some owner comments to the page on SRAM G8 and G9 internal-gear hubs. Opinions are generally very positive.

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Click to re-order spindle list

The list of Sturmey-Archer indicator spindles now sorts either on the part number or on the spindle length, with a mouse click.

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More indicator spindles

David Prosser of Sturmey Archer has sent information about a couple of Sturmey-Archer indicator spindles (the chain-pull assembly which shifts the hub). It is now on our indicator spindle page. Thanks David!

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SRAM G9 Hub

Our article about the SRAM G8 hub now also covers the new G9 9-speed.

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Home-brew hybrid gearing

Additions to the article on internal-gear hubs — more about how to construct a multi-speed hybrid-gearing system using a stock 3-speed hub and two sprockets and/or two chainwheels. It indexes even without index shifters! Photo courtesy of Mark Stonich.

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Internal gear theory

John has posted his article on internal-gear hub theory, history and some practical advice. This article describes the internal workings of all the newest hubs including those with compound and multi-stage gearing.

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John Allen’s updates to the site 12/2010-3/2011

March 13-22-25 headsets.html – major updates including instructions on adjustment of threaded headsets; added exploded diagrams; resized photos and added a photo of a “brinelled” bearing race. More to come — photos of disassembly/reassembly. March 12 velos.html — added comments … Continue reading

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