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Simplex Rigidex 35 (steel pulleys; rounded lower pulley cage; slotted hanger)
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Main Photo
Category:  Rear Derailleurs
Name:  Simplex Rigidex 35 (steel pulleys; rounded lower pulley cage; slotted hanger)
Brand:  Simplex
Model:  
Years:  1954 - 1958
Country:  France
Weight:  411.1 grams (Spec)
Added By: nprenet on 11/18/07
Updated By: peterbman on 04/23/17
Additional Photos - click for full size
Outer Plate MarkingsSimplex Made in FranceInner Plate Markings
MaterialAluminum Alloy; SteelDesign Category
Attachment Bolt SizeBolt OnCable Attachment Bolt Size
Shifting SystemsFrictionCable AdjusterNo
Cage LengthMax Cog Size28
Max Chain Wrap38+  
General Information
Looks exactly like a Rigidex 35, in the book Derailleurs of the World, Simplex. Comments from original poster: "This derailleur appears to be a variation (though likely an earlier than 53 version so the 52 guess is probably right on the money) of the Model 'Grand Tourisme' derailleur.  The Grand-Tourisme could be used on 3-4speed with a 1/8" chain and 4-5speed with a 3/32" chain.  The photoed derailleur here has the "Bracket for Monobloc Rear Fork Ends No. 407/8" installed.  There was also a bracket for clamping to the rear chain stay which was probably the more common setup."
Quality:Rarity:
 
 
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Additional Resources
Resources:Reference & ChartsCatalogsExternal Resources
Brand Information(click to expand)

Known for their black plastic (Delrin) derailleurs during the "bike boom" of the 1970's, they were at the forefront of innovation over the years, producing such highly regarded items as the Super LJ derailleurs, Retrofriction shifters, and very popular line of seat posts.

 
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