Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 57 Post(s)
Tagged: 1 Thread(s)
Quoted: 2062 Post(s)
Hillrider raises a good point. Unless the frame has built in fulcrums (cable stops) you were supposed to thread the entire cable with housing.
Another possibility if your frame runs only the bare wire internally is that you somehow crossed one over the other inside the frame, and you're hearing one saw across the other. You can sometimes test for this by varying the tension in one cable while watching the other derailleur for response.
One more possibility is you somehow mis-routed it through or past the BB, and it's sawing at the inside corner within the BB shell.
Lastly, some bikes route the cables crossed in front so the RD wire enters the downtube on the left, and FD wire on the right. They do this to open up the HB to frame curve a bit. With this arrangement, you might hear some scraping where the cables touch as they cross inside the downtube.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
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