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

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. We’ve also checked an updated all the links on the page.

S7 hub internals
S7 hub internals

SRAM Automatix 2-speed hub

New article about the SRAM Automatix two-speed hub. We have information on maintenance, choice among variant models, and how to adjust the speed at which it shifts automatically.

Exploded diagram of the SRAM Automatix hub
Exploded diagram of the SRAM Automatix hub

More hubs in cable-pull cribsheet

Added information on four hubs to the internal-gear hub cable pull cribsheet:

Shimano Alfine 11-speed
SRAM G9
Sturmey-Archer S3X
Sturmey-Archer ASC

Thanks to Jeff Meredith and Michael Wilson for the measurements!

Shimano 4-speed hub gears

Shimano Nexus 4-speed coaster-brake hub
Shimano Nexus 4-speed coaster-brake hub

Expanded coverage of Shimano Nexus 4-speed hub gears — we now have rebuilding information, translated from manuals in German which are the only ones we could find online — complete instructions for both the freewheeling/Rollerbrake version and the coaster brake version. Thanks go to Patricia Morris for assistance with translation.

SRAM and Sachs Internal-gear hubs

SRAM G8 internal-gear hub
SRAM G8 internal-gear hub

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.

Crib sheet of internal-gear hub cable-pull measurements

Alex Wetmore's cable pull measuring tool
Alex Wetmore’s cable-pull measuring tool

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 Wetmore and Jeff Bertolet for help with this page.

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