Simplex (lever actuated, short cage, lower limit screw only, alloy knob, Italian made  (Report Pending)
Main Photo
Category:  Front Derailleurs
Name:  Simplex (lever actuated, short cage, lower limit screw only, alloy knob, Italian made
Brand:  Simplex
Years:  Late 1940's - Early 1950's
Country:  Italy
Added By: JAKE on 08/19/21
Updated By: JAKE on 08/19/21
Additional Photos - click for full size
Simplex (lever actuated, short cage, lower liSimplex (lever actuated, short cage, lower liSimplex (lever actuated, short cage, lower li
 Verify Component Photos
# Rings Designed For DoubleOuter Plate MarkingsBREVETTO INT. SIMPLEX (stylized logo)
Inner Plate MarkingsClamp MarkingsSIMPLEX (stylized logo) BREV. INTERN .
Inner Clamp MarkingsDesign CategoryPivot Arm
Pivot Arm MarkingsPlate MaterialChrome plated steel
Clamp Style28.6 Endless BandCable Attachment BoltNot applicable; lever actuated
CableStop Not applicable; lever actuatedClamp Bolt Type12mm hex nut
Max Ring Difference   
General Information
Possibly a rare Italian made unit as denoted on the knuckle cap (MADE IN ITALY), and with use of Italian to denote patent (BREVETTO INT.). Year(s) estimated to be the same as the other "Competition" model having only a lower limit screw below the povot knuckle. Friction adjustment via an 8mm hex nut at the pivot knuckle cap. Cage width is approx. 11mm internally
Reported By:JAKE
Report Date:8/20/2021
Report Reason:Incorrect Content, Need modify clamp as a standard 28.6mm clamp. Typo in description: pivot versus povot. I have been unable to make any changes to entries. "Options" button does nothing using a desktop or mobile device
Outstanding Report Submitted  
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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