Originally Posted by
JeremyZ
Educate me, as this sound fascinating: How is it that they never need adjustment? How do they work and how are they built? Are they made out of some type of synthetic that won't rust?
http://www.rideoncables.com/en_us/
The inner wires are coated with PTFE, they travel inside a very tight conduit/liner which is separate from the also lined housing, and a "grub seal" innovatively keeps all weather out from the derailleur end of the cable. Somebody (not me) once accurately stated, "You only change the cables when you change frames".
They are truly remarkable for shifting, just so much faster and more precise than any other cable system with the added benefit that you never need to adjust them unless you remove a derailleur for major overhaul. I swear that my 1994 MTB that goes through hell and high water (literally) every winter shifts faster and more precisely than my $7000 road bike which doesn't have these cables (yet).