Hub Dynamo

A hub dynamo is a small electrical generator built into the hub of a bicycle wheel that is usually used to power lights. Most modern hub dynamos are regulated to 3 watts at 6 volts, although some will drive up to 6 watts at 12 volts.

Read more about Hub Dynamo:  Models, Efficiency

Other articles related to "hub dynamo, dynamo":

Hub Dynamo - Efficiency
... Bicycle Quarterly reviewed seven different hub dynamos in 2005 ... The SON28 was found to be the most efficient, although its cost was significantly higher than models from Shimano ...
European City Bike - Typical Features - Hub Dynamo, Automatic Lights and Magnetic Lights
... A hub dynamo enables a built-in lighting system without the loud noise and high drag of a bottle (sidewall) dynamo, and without the unreliability, high cost ... The hub dynamo powers LED or halogen front and rear lights ... This prevents having to reach to physically position a bottle dynamo or consume set-up time this enables ready, guaranteed lighting regardless of the daylight conditions ...

Famous quotes containing the word hub:

    We recognize caste in dogs because we rank ourselves by the familiar dog system, a ladderlike social arrangement wherein one individual outranks all others, the next outranks all but the first, and so on down the hierarchy. But the cat system is more like a wheel, with a high-ranking cat at the hub and the others arranged around the rim, all reluctantly acknowledging the superiority of the despot but not necessarily measuring themselves against one another.
    —Elizabeth Marshall Thomas. “Strong and Sensitive Cats,” Atlantic Monthly (July 1994)