With the chain on the 34T: shifting in the rear is poor, so I used the fine tuning setting to adjust the gears (setting -3). Now all is well, but when I shift to the big ring (50T), shifting in the rear is mediocre. By using the fine tuning settings again I can make the gears work properly again, but obviously that doesn't solve the problem. It's a vicious circle.
- Ultegra Di2 11-speed
- Long cage derailleur
- SRAM 11-speed chain
- Marchisio 11 speed cassette 13-30
- Quarq power meter
What have I tried to solve the problem
- Aligning the derailleur hanger about 6 times
- Using a brand new derailleur hanger (including alignment)
- Re-adjusting the inner and outer limit of the RD
- Adjusting the B-screws on the RD
Also- is the shifting poor in any particular place in the block? (top, middle, bottom or poor throughout)?
The problem appears to occur in the middle of the cassette.
Sprockets on Marchisio cassettes sit into plastic spacers. The sprockets can be mounted 2 ways; with the little mark facing outwards or inwards. Not sure if it's important to install them all the same way. This could be the problem however.
I've sent Marchisio an email about this.
It almost certainly has something to do with it, the shift gates and ramps will be on the wrong side of the sprocket.havana wrote:Sprockets on Marchisio cassettes sit into plastic spacers. The sprockets can be mounted 2 ways; with the little mark facing outwards or inwards. Not sure if it's important to install them all the same way. This could be the problem however.
Either try (borrow) a shimano 11 cassette to check, or put your marchisio together properly and try again.
The change in chain tension between 34 and 50 may mask the problem in one ring, but not the other.
The largest sprocket (which is a normal sprocket so it will only fit one way) has the teeth mark facing inward.
The smallest two spockets (which only fit one way) outward.
Not sure how to position the middle sprockets.
Sent Marchisio an email for clarification.
if all the other suggestions fail, try a shimano chain. might be placebo but I didn't have any hesitations or smoothness issues after using all shimano parts.
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