dynohub

The Dynohub was designed to generate electrical lighting power for bicycles during the Second World War.

The term "dynohub" is sometimes applied generically to bicycle hub dynamos, but it originates as a trademark.

The market was largely pioneered by Sturmey-Archer with their Dynohub of the 1930s-1970s.

The Dynohub was Sturmey-Archer's hub dynamo for bicycles.

This competed effectively with contemporaneous bottle dynamos and bottom-bracket generators, but the Dynohub was heavy with its steel housing and was discontinued in the 1980s.

In 1938 Ferris gained the R.R.A. 24-hour record with a distance of 465.75 miles, (461.75 miles) riding from Edinburgh to the South Coast and demonstrating the qualities of Raleigh's Dynohub.

The prospective long night ride involved a challenge for Ferris' one good eye, which had already been strained on the Land's End to John O'Groats, but his bicycle was fitted with the new Dynohub and he endured 15 hours of darkness to break the R.R.A record.