Simplex chain tensioning device Ref. T 232
Main Photo
Category:  Small Parts & Accessories
Name:  Simplex chain tensioning device Ref. T 232
Brand:  Simplex
Model:  Ref. T 232
Years:  1960's - 1970's
Country:  France
Added By: JFischer on 08/01/09
Updated By: peterbman on 01/08/17
Additional Photos - click for full size
Simplex chain tensioning device Ref. T 232
Part Type Chain GuideIdentifying Markings 
MaterialSteelLocation Monobloc dropout
General Information
Small version of the Simplex sprung chain tensioner.  The part bolted to a specalized dropout known as a Monobloc, an image of this drop out is in the Frame Parts list here on  There was also a larger version of this sprung tensioner, as well as a non-sprung version.
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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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