Originally Posted by
cyccommute
I've never had a problem with the cable anchoring properly. The teflon coating is very thin and teflon, while slick, is also soft and deforms easily under pressure. I don't use noticeably more pressure on the anchor cable and my Teflon coated cables aren't overly deformed at the pinch bolt over uncoated cables.
As you may have guessed, I have. The first time I used teflon coated cables I just tightened the clamp bolt the same as always and on my second ride the shifting wen't all wonky. Not, slightly like from minor bedding but really bad, like two cogs out of phase. When I got home I found the cable had slipped through the clamp about 5 mm. So, I realigned it and tightened the bolt a bit tighter. Two more rides, same problem. This time I carefully scrapped the coating off for about an inch each side of the clamp area, tightened the bolt normally and no more problems. YMMV
It's something to watch out for.