I think this is a later example of a chainstay mounting SunTour 888 Wide derailleur - probably manufactured by SunTour themselves (early versions were manufactured by a company called Iwai). This example has very similar branding to that on my ‘5th style’ example of the SunTour 888 Wide.

The underlying design remains a version of any number of French designs from the 1930’s (see the Super Champion/Osgear Grand Sport) . This Suntour is, however, a well executed example of the genre.

____________________________________________

1. •Brand: SunTour
   

2. •My category: SunTour - pull-chain models
   

3. •Country: Japan
   

4. •Date of introduction: 1955?
   

5. •Date of this example: unknown
   

6. •Model no: unknown
   

7. •Weight: 313g including integral mounting plate but excluding external chain tension spring and chainstay clamp.
   

8. •Maximum cog: 28 teeth?
   

9. •Total capacity: 28 teeth?
   

10. •Pulley centre to centre: 70mm
    

11. •Index compatibility: friction
    

12. •Chain width: 1/8”?
    

13. •Logic: low normal
    

14. •Pivots: one sprung pivot
    

15. •Material: steel
    

0109/D