Simplex single (J. SIMPLEX on washer)
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Category:  Shifters
Name:  Simplex single (J. SIMPLEX on washer)
Brand:  Simplex
Years:  1958 - 1960
Country:  France
Weight:  46.5 grams (avg)
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Added By: Walkman-man on 06/28/16
Updated By: peterbman on 03/11/18
Additional Photos - click for full size
Simplex single (J. SIMPLEX on washer)Simplex single (J. SIMPLEX on washer)Simplex single (J. SIMPLEX on washer)Simplex single (J. SIMPLEX on washer)
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Shifter Type DowntubeAttachment Style Downtube Braze-on (standard);
Downtube Clamp-On
Shifting SystemsFrictionLever Markings"L. J. Simplex" "S"
Lever MaterialAluminum  
General Information
A right hand 50's Simplex shifter, which came on a 50's bike, which also had a Simplex's Tour de France rear derailleur.
These control levers were supplied with all Simplex rear derailleur gears. They could be mounted as clamp-on or modified for use with brazed-on bosses by simply removing the clip.
Lever, outer cover and bolt are all alloy, so total weight is pretty low. Although, in saying this, I'm not sure if using the bolt to save weight is the best idea, since I'd suggest that stripping this often used bolt is a possibility if the user was careless when tightening it up... And, if the lever is to be used on an unfamiliar frame attached to a brazed on boss, this could be a problem as the above bolt seemingly is French threaded. Or possibly this threading (widely spaced, see close-up on pic) is particular to frames from the 50's with suitable bosses that became obsolete, as I've never seen the like before.
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Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 2)BrandGroup
Simplex single (SIMPLEX D on washer)Simplex
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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WeightSourceNotesAdded By
45 GramsUnknownapprox. Tombo
48 GramsSpec peterbman
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