Shimano 9070 Di2 Noise

Discuss light weight issues concerning road bikes & parts.
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Romper
Posts: 8
Joined: Thu Aug 29, 2013 11:41 pm

by Romper

I know there are numerous threads concerning cassette noise/carbon spider etc but I cannot find anything related to my issue.

I am running 9070 Di2 on my Willier Centro SR with standard 53/39 & 11-25 chainrings/cassette. While it is smooth & quiet on the 39, it rattles & sounds industrial on the 53. Noise seems to get progressively worse the smaller the gear, so the 53x11 is tolerable where as the 53x25 is horrible. The only deviation from this pattern is that the 53x19 is the noisiest.

I have been back to my LBS where I purchased the bike from & they have bent over backwards to try & rectify the issue. They have replaced the tip, put on a new chain, tried different wheelsets (with an Ultegra 11spd), tried different lubes (both wax based & teflon/wet lube) to no avail.

Has anyone experienced anything similar or have any possible solution to what it may be?

by Weenie


Horacio
Posts: 216
Joined: Sat Jan 21, 2012 5:28 am

by Horacio

I have the same bike, same group with the exception of a different crank and rings. I'm running the Clavicula and Rotor q rings. I don't get a lot of noise, but I'm running a KMC gold chain. It seemed at little noisy when new, but now I have a couple thousand miles on it and it seems to have quieted up a little. My biggest qualm is that once in a while it self shifts from the big ring to small out of the blue. It's crazy. And shifting from small ring to big ring is a little tricky with the q rings. Now if I could get the creaking to stop in the front end, that would be terrific!!!

pdlpsher1
Posts: 1478
Joined: Thu Jul 19, 2012 6:09 pm
Location: CO

by pdlpsher1

I wonder if this has something to do with the hollow chainring since the noise is not present on the 39. I'm running Di2 9070 however I'm using Red cranks. Is the noise coming from the crank or the cassette?

Romper
Posts: 8
Joined: Thu Aug 29, 2013 11:41 pm

by Romper

As far as I can tell its coming from the crankset/chainrings.

goodboyr
Posts: 1388
Joined: Wed Jan 10, 2007 10:56 pm
Location: Canada

by goodboyr

I've had this issue on my cervelo because the stock rear derailleur hanger is a soft material and was slightly misaligned. Replace the hanger with a wheels manufacturing one and use the proper tool to align it. I've found di2 9070 is particularly sensitive to this.

Sent from my SGH-I747M using Tapatalk 4

goodboyr
Posts: 1388
Joined: Wed Jan 10, 2007 10:56 pm
Location: Canada

by goodboyr

And make sure the support plate and bolt is set properly on the front derailleur.

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mpower
Posts: 158
Joined: Mon May 23, 2011 4:37 pm

by mpower

I suspect the noise is coming from the cassette. I have two bikes running the 9070. One with Specialized crank and this bike drivetrain is nosier and the other bike with Campagnolo Super Record cassette is very silent.

Romper
Posts: 8
Joined: Thu Aug 29, 2013 11:41 pm

by Romper

LBS and Shimano Australia have replaced the cassette with an Ultegra 11sp and put a new Dura Ace chain on this afternoon. While its too early to make a definitive judgement, my commute home this afternoon indicates that the Dura Ace cassette was the problem.

aerozy
Posts: 778
Joined: Thu Sep 04, 2008 9:48 am
Location: Mountains, Portugal

by aerozy

ahhhhh... Dam! I was afraid of this outcome!

Will mostly likely have to go down the same route :oops:
Sunny cycling holidays in Portugal @ Cherry Cottage Vintage B&B

Ceebers1
Posts: 35
Joined: Sun Apr 25, 2010 6:29 am

by Ceebers1

I have noticed this on a few bikes that I have worked on. Mostly in the 53x12, 13, 11... lower 2 or 3 cogs in the big ring. It seems more prevalent in the stand than on the ground. I kept checking dropout alignment, high limit,etc...

I changed the wheel, and the noise went away. Seems like frame, chainring, wheel, or combination there in were resonant to the frequency that was produced.

I know this might sound strange, but sympathetic vibration has been a big problem with some cantilever brake forks and disk brake frames...

As with all things un seen, I could be completely wrong.

by Weenie


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PSM
Posts: 1570
Joined: Tue Aug 28, 2012 2:45 pm
Location: Stockholm, The Arctic...

by PSM

I also find my Ultegra cassette quiter than my D-A dito. :(

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