Don't make the mistake that what you see on the books' covers mean that what's inside are the same. Yes, both shift and brake casing have much the same metal mesh outer covering but I'll bet a lot that the insides of the casings are different. Have you bothered to take then apart yet to see the insides? You can see that the inner cables are of two different diameters. I strongly suspect that the brace casing will have one filament tightly wound so it's coils contact each other, providing large expansing strength and allowing a lot of bending flexibility. The shift casing will likely have a number of wires which are side by side and "slowly" wrap around the liner providing high compression strength but far less flexibility.


Whatever you do DON'T use a modern index specific shift casing in the brake system. The casing can burst outwards creating a loss of braking. Andy