It is easy to consider a late 1970s Rino derailleur to be cheap Italian dross. There is something imprecise about the forms, there are too many casting lines, the surfaces are slightly pitted and the anodising is just too shiny.
But look more closely and you will see that, with its slant parallelogram and internal cable routing, this is the bastard child of a SunTour Cyclone and a SunTour V Luxe. So it will change gear with impressive speed and precision. It also weighs in at under 180g.
Even more unusually, the parallelogram pivots have screw threads and slotted heads - so it is fully demountable.
Fascinatingly competent in a horrible kind of way.
I would guess that this, virtually unused, example is my earliest Rino derailleur - largely because of the raised 'R' logo on the front of the p-knuckle. Some of its key features might be:
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