Clunkerbike

Six years ago, I invented a thing called Dryline . My back brake, a mechanical disk, had shat itself. It wouldn't operate from handlebar, but could be operated at the brake caliper, itself. Had to be the line. It was, after a few hours of googling, I discovered this is a problem with mechanical disk brakes mounted inside the rear triangle. The cable fills up with water and road grime in winter and, unlike the old days, when bikes were designed with sheath sockets and open cabling, but disk brake frames have to make way for hydraulic lines, so by extension, mechanical cables have to be sheathed all the way, too. The problem is solved by installing a "cable vent" below the caliper, but above the bottom bracket. I couldn't find such a thing, so I invented one. I designed it, boaught a 3D printer, and made several, before settling on this design. (I'd forgotton the old cable runners that used to be under bottom brackets, BTW, that's another possible solution, if ...