Replaced Ultegra drivetrain – Still having issues???
what frame is this being used on (internal routing / external routing)?
did you replace the gear cabling when you installed the new parts?
is the new derailleur hanger actually straight (new are often bent)?
unreliable or direction-biased indexing is normally a sympton of cable drag or a bent hanger; we see this a lot on bike with internal routing where the routing has not been done correctly
new and even used 6700 should run very smooth, it was a fantastic group setPosted 3 years ago
Replace the whole of my 6700 drivetrain with full genuine parts:
– compact chainrings (50/34), chain and cassette.
What expecting to be ‘as new’ and smooth, instead struggling for indexing (get i perfect going up, then just not quite right going down or vice vera).
Plus its not super quiet when turning the pedals either like it should be!!
Tried everything, the chain is the correct way round (shimano text outwards), but tried it in all 4 directions/ways with no joy, tried the b tension screw. Even bought and fitted a new mech mech hanger with no joy. Rear mech jockey wheels are fine too.
Only thing i think of doing is sacking off the shimano chain and getting a aftermarket chain???Posted 3 years ago
New cables about a 1000 mile ago when new shifters went on, compressionless ones too
Replaced the mech hanger already, it is straight too.
External cable routing on an s-works, doubt it will get better with time.
The indexing could be the cables I’ll check tomorrow, indexing is odd but the chain sounds noisy even if ite Chainline looks right???Posted 3 years agogoldenwonderMember
My Ultegra doesn’t index either.
New cables ( genuine Shimano inner & outer), new rear mech, hanger straight-checked by me in the shop using the Park alignment tool.
Gives the impression of sticky cables but just doesn’t seem to improve at all.
The Tiagra on my commuter however is faultless, as is the new Ultegra 11sp.
I now just ride the thing & put up with the fact it doesn’t work as well as it should!Posted 3 years ago
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