Are fork truss rods for, let's say for example, a balloon tire Schwinn fairly universal? I mean, do they very in length depending on head tube or steer tube length, or are would they all be more less the same? I understand that different brands have different style upper brackets and there would be differences there, etc. I'm just curious if I'd have to look for something very specific to work on a given bike or if most any set could be made to fit readily.