Simplex LJ A200 Criterium (CPSC version)
Main Photo
Category:  Front Derailleurs
Name:  Simplex LJ A200 Criterium (CPSC version)
Brand:  Simplex
Model:  LJ A200 Criterium
Years:  1977 - 1978
Country:  France
Weight:  139 grams
Added By: simplex56 on 01/09/08
Updated By: JFischer on 05/13/09
Additional Photos - click for full size
Simplex LJ A200 Criterium (CPSC version)Simplex LJ A200 Criterium (CPSC version)
# Rings Designed For DoubleOuter Plate MarkingsSimplex sun logo
Inner Plate MarkingsNoneClamp MarkingsSimplex (logo)
Inner Clamp MarkingsMADE IN FRANCE MODELE DEPOSE Bte S.G.D.G.Design CategoryParallelogram
Pivot Arm MarkingsPlate MaterialChrome plated steel
Clamp Style28.6mm ClampCable Attachment Bolt8mm Wrench
CableStop YesClamp Bolt Type4mm Allen Key
Max Ring Difference   
General Information
This was original equipment for Peugeot PX10LE in 1977 and 1978 as sold in USA.  Peugeot catalogs refer to it LJA200 Criterium, even though back side of clamp (above) plainly reads Simplex Super Competition.  Photo in Bicycling Magazine road test October 1977 shows 3 rectangular cutouts in the outer plate, whereas catalog photos show solid plate as above.  The circular reinforcement added to outer plate was for CPSC compliance, which everyone says happened in 1978, but Peugeot had already addressed in 1977.  Black material is Delrin (plastic).  Cable attaches in front, passing through the clamp pivot.  Delrin eventually cracked through at the clamp hinge, making it impossible to clamp the unit tightly to the down tube.
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Additional Resources
Resources:Reference & ChartsCatalogsExternal Resources
Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 2)BrandGroup
Simplex LJ A200Simplex
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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