Tag Archives: planetary

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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Sturmey-Archer indicator spindles

John has compiled an article with dimensions of most kinds of Sturmey-Archer indicator spindle — the little rod and chain which the shifter cable pulls to shift the gears inside the hub. There are over a dozen different indicator spindles, … Continue reading

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Shimano Nexus 4-speed

John has put together a new article about the Shimano Nexus 4-speed internal-gear hub, with links to a parts list and servicing information. This hub has been discontinued, but in case you want to keep one going…

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Article about Rohloff hub

We have spiffed up an article about the Rohloff 14-speed internal-gear hub which had been lurking on the Harris Cyclery part of the site and placed it with the other informational articles.

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About torque

John has written a new article about torque, as it applies to threaded parts, braking and drivetrains.

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Five-Speed Hub Gears

Article about 4- and 5-speed Sturmey-Archer hubs kindly shared by John Forester and now on sheldonbrown.com. This dips into the history of the hubs and suggests several useful modifications also applicable to other hubs.

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Updates to Sturmey-Archer 4, 5 and 7-speed hub page

Major updates to the page on Sturmey-Archer 4, 5 and 7-speed hubs, mostly concerning the hubs sold from 1991 through 2009.

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More troubleshooting advice on Sachs/SRAM internal-gear hubs

There’s more troubleshooting advice now in our article about Sachs/SRAM internal-gear hubs: how to test whether a problem is inside the hub, or only in the shifter and cable — for hubs with 3, 5 or 7 speeds, with pullchain(s) … Continue reading

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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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