Tag Archives: SRAM

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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Crib sheet of internal-gear hub cable-pull measurements

NEW – Crib sheet of internal-gear hub shifter cable pull measurements The main thing this shows is that there is very little compatibility, though there is *some* — mostly among three-speeds, though not always among them either. I thank Alex … Continue reading

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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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Edit to cable travel adapter cribsheet

The cable travel adapter cribsheet has been edited to include more information, and links.

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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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SRAM G8 Hub

New article about the SRAM G8 8-speed internal hub gear — all you need to know to install this hub: specifications, gear ratios,  parts compatibility and availability, how the mechanism works.  As far as we know, this is the one … Continue reading

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How the i-Motion 9 hub works

New section on how the SRAM i-Motion 9 hub works in the article about that hub.

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SRAM i-Motion 9 internal-gear hub

New article about the SRAM i-Motion 9 internal-gear hub — the only public source of information on how to rebuild this hub, and with links to installation information and (hard to find!) parts lists from SRAM.

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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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