Simplex Competition (lever, lower limit screw, upper stop, wreath logo, plastic knob)
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Category:  Front Derailleurs
Name:  Simplex Competition (lever, lower limit screw, upper stop, wreath logo, plastic knob)
Brand:  Simplex
Model:  
Years:  Late 1950's
Country:  France
Added By: JAKE on 08/29/21
Updated By: JAKE on 08/29/21
Additional Photos - click for full size
Simplex Competition (lever, lower limit screwSimplex Competition (lever, lower limit screwSimplex Competition (lever, lower limit screwSimplex Competition (lever, lower limit screwSimplex Competition (lever, lower limit screwSimplex Competition (lever, lower limit screwSimplex Competition (lever, lower limit screwSimplex Competition (lever, lower limit screwSimplex Competition (lever, lower limit screw
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# Rings Designed For DoubleOuter Plate MarkingsBte S.G.D.G JUY SIMPLEX
Inner Plate MarkingsClamp Markings
Inner Clamp MarkingsDesign CategoryPivot Arm
Pivot Arm MarkingsPlate MaterialChrome plated steel
Clamp StyleBraze-on TabCable Attachment BoltNot applicable; lever actuated
CableStop Not applicable; lever actuatedClamp Bolt Type12mm hex nut
Max Ring Difference   
General Information
All steel construction except pivot cap (aluminum?), butterfly nut (white metal alloy?), and knob (plastic). Odd braze-on mount; unit received as shown, possibly missing some internal spacer hardware due to the inability to provide proper friction adjustment for lever. Exploded view is in order as received, it might be incorrect. I believe this unit is from 1959 (late '58-'59) since it utilizes the 'wreath' logo design the same as used on the 1959 rear derailleur.  Cage width is 11mm internally. I have never mounted this unit due to not having a frame of the same period with a braze-on tab; nor have I seen a frame with this unit installed.
Quality:Rarity:
 
 
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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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