This is a flamboyant little number, with its logo dashed off in extravagant cursive script and its rear knuckle sporting a jaunty angle.

Mechanically it is partly Shimano (see the cable clamp and adjustment screw placing) and partly not - it has only one sprung pivot. Its cable outer stop and the cut-out at the tension pulley end of the pulley cage recall those of the Cristim.

I have searched high and low for any reference to a Centauros derailleur - and found nothing. The logo indicates that Centauros is a registered trade mark - but I don’t think the Brazilian Trade Mark data is available online (yet).

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1. •Brand: Unknown Brazilians
   

2. •Country: Brazil
   

3. •Date of introduction: 1985?
   

4. •Date of this example: unknown
   

5. •Model no: unknown
   

6. •Weight: 187g excluding hanger bolt and cable clamp bolt and washer
   

7. •Maximum cog: 28 teeth?
   

8. •Total capacity: 28 teeth?
   

9. •Pulley centre to centre: 51mm
   

10. •Index compatibility: friction
    

11. •Chain width: 3/32”
    

12. •Logic: top normal
    

13. •Pivots: two pivots, front sprung and rear unsprung
    

14. •Material: steel
    

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