What does a rear derailleur do?
The rear derailleur is designed to move the chain up an...
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MI United States of America
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San Francisco, CA
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Temp:
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23°C
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Wind Chill:
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23°C
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Humidity:
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51%
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Speed:
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27 km/h
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Direct.:
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300°
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Barom.:
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1014.2 mb
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WNW
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Weather Details
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Provided by:
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