Campagnolo Euclid (Medium Cage)
Main Photo
Category:  Rear Derailleurs
Name:  Campagnolo Euclid (Medium Cage)
Brand:  Campagnolo
Primary Group:  Euclid
Model:  Euclid
Years:  1989 - 1991
Country:  Italy
Added By: JFischer on 06/17/10
Updated By: peterbman on 09/28/14
Additional Photos - click for full size
Campagnolo Euclid (Medium Cage)Campagnolo Euclid (Medium Cage)Campagnolo Euclid (Medium Cage)Campagnolo Euclid (Medium Cage)
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Outer Plate MarkingsCamapgnolo script logoInner Plate Markings
MaterialAluminum AlloyDesign CategorySlant parallelogram
Attachment Bolt Size5mm Allen KeyCable Attachment Bolt Size8mm Wrench
Shifting SystemsFrictionCable AdjusterOptional
Cage LengthMediumMax Cog Size34
Max Chain Wrap38T  
General Information

Finally tracked down the correct model of this derailleur.  Based on the body design and the white jockey wheels this appears to be the Euclid rear derailleur.

Double adjustment for safe, efficient changing.

The hardened steel adjusting screw presses on a mobile steel bracket which varies the preload of the tension spring. The less the spring is preloaded, the tighter the chain wraps the freewheel, thus promoting quicker more accurate shifts. Between the mobile steel bracket and the body of the rear derailleur is a special anti-friction bushing which significantly reduces pivot friction and ensures the precise, flowing movement of the rear derailleur.

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Additional Resources
Resources:Reference & ChartsCatalogsExternal Resources
Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 3)BrandGroup
Campagnolo Euclid (Short Cage)CampagnoloEuclid
Campagnolo Euclid (Long Cage)CampagnoloEuclid
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
EuclidCampagnolo1989 - , Mountain BikeView 26 Components
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