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Tension Pulley

From WikiPedalia
Sheldon Brown's Bicycle Glossary · letter T
← Tensiometer · Terry ® →

The lower pulley on a rear derailer. So called because its main function is to adjust the tension on the chain as different-sized sprockets are selected.

Copyright © 1996, 2008 Sheldon Brown
Original: https://www.sheldonbrown.com/gloss_ta-o.html#tensionpulley · Reproduced on en.wikipedalia.com with permission, all rights reserved.
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