This is a Sachs-Huret New Success ARIS (47.2D) discreetly decorated with the word 'approved' and Galli's rooster symbol ('gallo' is the Italian for 'rooster'). By the late 1980s Galli needed a decent indexing derailleur for its better groupsets, and did not have the resources to design one of its own. Instead it adopted Sachs-Huret's model of the moment.

The derailleur itself is quite a classy piece of work. It’s a proper slant parallelogram design with two sprung pivots. The angular styling and the placing of the adjustment screws make for an individual look, and it has a spring loaded ‘cable saver’ built into the adjustable cable outer stop. It is more Shimano 600 quality than Shimano Dura-Ace, but it is a competent, composed design nonetheless.

ARIS stands for Advanced Rider Index System, Sachs-Huret’s answer to Shimano’s SIS. ARIS worked reasonably well, but lacked the degree of attention to chains and freewheel cogs that set Shimano’s system apart.

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This is a reasonably high-mileage example. Some of its distinguishing features include:

• It is anodised grey.
• The main b-pivot bolt takes a 6mm Allen key.
• The pulleys and the small plastic piece at the cable adjuster are light grey.

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• Derailleur brands: Galli
• Country: Italy, with help from Germany, manufactured in France
• Date of introduction: 1987
• Date of this example: 1988 (stamped 0488, week 4 1988)
• Model no.: 47.2 D (Sutherland’s 6th edition)
• Weight: 226g
• Maximum cog: 28 teeth (Sutherlands 6th edition)
• Total capacity: 28 teeth (Sutherlands 6th edition)
• Pulley centre to centre: 50mm
• Index compatibility: 7 speed
• Chain width: 3/32”
• Logic: top normal
• B pivot: sprung
• P pivot: sprung
• Materials: largely aluminium, with a steel inner parallelogram plate