Friday 20 April 2018

Raleigh/Carlton Grand Prix: Replacing Gear Cables [Jagwire Stainless / Braided Outers]

The gear cables were more or less a straight swap and did not require modification like the brake cables. I swapped in my vintage Campagnolo Super Record gear-shifters during this job, so if you are planning to change your shift-levers or front/rear derailleurs then wait until you are ready to fit them before replacing the cables.

My Jagwire kit came with 10 alloy ferrules. I guess this number caters for mountain bikers, as I struggled to find places were they would fit and ended up using just two of them, where the cable exits the outer at the derailleurs.

REAR:

The only bit of adapting required was to the metal ring that holds the cable-outer at the rear derailleur. The original aperture was 5.4mm and needed boring out a tiny bit to 5.8mm to allow the Jagwire ferrule to fit [2nd pic]. The old outer had no ferrule and fitted straight in to the metal ring, but was quite loose and sat at a bit of an angle anyway, causing the outer to split.





FRONT:

The front gear cable required no modification at all. The outer has nothing to hold it in place here, it just stops at a metal disc with a small hole where the cable exits the outer. I used an alloy ferrule here, but it just sits flush and is free to move, with only the tension of the cable holding it in place. It wanted to sit at an angle, so a cable-tie helps keep it straight. In future I will attempt to 3D-print a bracket that clips around the frame and holds the ferrule in position.


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