A bare steel cable will make short work of your alloy bars, also it would suddenly take a very sharp angle on exiting the bars if it had no outer. There would be no compression of the outer to act on the arm of the brake. In short, it would eat your bars and not work. You must have an outer!
A bare steel cable will make short work of your alloy bars, also it would suddenly take a very sharp angle on exiting the bars if it had no outer. There would be no compression of the outer to act on the arm of the brake. In short, it would eat your bars and not work. You must have an outer!