Bike Forums - View Single Post - Chain mis-tracking at rear derailleur idler pulley -- what's the problem?

03-11-15 | 11:59 AM

#8

FBinNY

Senior Member

Joined: Apr 2009

Posts: 39,897

Likes: 3,865

From: 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

Quote:

Originally Posted by FlashBazbo

With the chain on the middle cog and the small ring, the chain appears to come to the pulley straight -- parallel top and bottom. With the chain on the middle cog and the large ring, the chain appears to come slightly from the outside -- and the idler is then slightly outboard of the jockey wheel.

I wish I could see it, and maybe help more. Some of these things are subtle and we can only guess at possibilities with info over the net.

__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

Just because I'm tired of arguing, doesn't mean you're right.

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.

Reply

0