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BLT2 chainline seems..changed

536 Views 4 Replies 3 Participants Last post by  ban
I have had recent shifting issues such as skipping/half shifting etc. After the normal adjustments and cleaning the drivetrain and recent new chain/cassette, looking down the chainline it just doesn't seem as straight as I remembered.

Running RaceFace Deus triple crank and SRAM XO cassette/chain type etc. ChrisKing hubs. Use a Rollamajig.

What would possibly cause the chainline to shift to the non drive or left side when looking from the rear of the bike?
(main triangle seems straight but rear tire might be angling to the front left but is rollin straight, if that makes any sense)

Suspension etc seems normal, no creeks/noises or ride changes noticed.
Thinking of taking the pivots apart to inspect and run new cables and housing.

Otherwise, BLT2 has been near flawless, might just be time for some maint.
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you can check if the frame dropout is bent, I think they can easily get bent....
Well, for now I will say it is a combination of two things.
1. Chris King hub needed some TLC, cleaned with WD40 and lubed with Bel Ray
synth 10w oil and no more "slipping".
2. I was so focused on getting my spoke tension for the drive and non drive sides so
perfect that I may have gotten the rim off center line with the frame...which shouldn't
effect shifting.
3. Ordered new pulley wheels for RD which seems to make shifting much improved after
a year or two.

If all that comes up short:
1. I'll replace cable and housing
2. Break down pivots and inspect
Check your derailer hanger.
I had this problem right out of the shop. Took it back, it was slightly bent so they straightened it. Rode it home and it was still ghost shifting. Went back to the shop and they put on a new derailer. Worked fine for a a couple of rides then it started ghost shifting again and in the process bent a few links of the chain. Finally got them to put on a new hanger (no bottle opener on this one) and a new chain.
It's been running smooth since.
ooops, this is what I meant to say....I always mistake "dropout" for "hanger", English is not my native language,...:D :D :D
brumos said:
Check your derailer hanger.
I had this problem right out of the shop. Took it back, it was slightly bent so they straightened it. Rode it home and it was still ghost shifting. Went back to the shop and they put on a new derailer. Worked fine for a a couple of rides then it started ghost shifting again and in the process bent a few links of the chain. Finally got them to put on a new hanger (no bottle opener on this one) and a new chain.
It's been running smooth since.
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