This first style of Juka is a simple basic derailleur, distinguished by its eccentric use of traditional screw heads - for the adjustment screws, for the cable clamp bolt and for the pulley bolts.

Overall it’s nicer than a Triplex and nastier than a Huret.

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1. •Brand: Juka
   

2. •Country: Poland
   

3. •Date of introduction: 1985?
   

4. •Date of this example: unknown
   

5. •Model no: unknown
   

6. •Weight: 202g excluding a missing metal plate that fits between the rear knuckle and the hanger
   

7. •Maximum cog: 26 teeth?
   

8. •Total capacity: 26 teeth?
   

9. •Pulley centre to centre: 47mm
   

10. •Index compatibility: friction
    

11. •Chain width: 3/32”
    

12. •Logic: top normal
    

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

14. •Material: plastic knuckles, steel parallelogram plates and aluminium pulley cage plates
    

0069/B