105 R7000 noisy in large front CR

[SpokeyDokey]

I don’t know what you mean to be honest?
I’ll have a look tomorrow.

It is something that recognises that it is damn nigh impossible to take out 'rub' on the left inner (looking down from an in saddle position) side of the cage, on modern micro-tolerance FD's. Small chunk of soft plastic that doesn't make a noise when the chain rubs it instead of bare metal. It's a couple of inches long so you can't miss it.

 

[Sloth]

So here's a few pics, sorry if they're not great but hopefully they'll help?
All are on the large front chain ring.
First up is when on the smallest rear gear....







Second is somewhere in the middle of rear cassette...




Thirdly is in the largest rear gear...


I can't really see this plastic thingy you refer to on the FDR?
Also, I noticed that the trim is not working when on the large CR, only the small. I'm sure it was working but now it isn't, this is weird!

 

[SpokeyDokey]

Here is a view of the black rubbing strip. You have it on yours.

https://www.sjscycles.co.uk/deraill...peed-double-front-derailleur-black-286-318mm/

If you have 1 of the two trim positions missing then the FD has not been set up properly. Can you confirm?

 

[Sloth]

Thanks.
Yes, when I operated the trim when on the large CR, nothing seemed to happen, no movement, if there was then it was negligible and not enough to do anything.

 

[Sloth]

In your link, which bit is the bit you're referring to?
Is it the black plastic piece above the chain guide or is there something on the inside of the inside chain guide? (hard to trll if that's just reflection form the angled edges or a black insert on the inside surface of the inner chain guide?

 

[Sloth]

Ah, I think it is a strip on the inner surface of the inner guide , I see it now...I think

 

[bikingdad90]

Looks like it isn’t set up properly. When the chain is on the 11/50 combination it is catching on the inside edge by the looks of it. Would expect it to be close to the outer edge instead.

 

[SpokeyDokey]

Ah, I think it is a strip on the inner surface of the inner guide , I see it now...I think

That is indeed it.

 

[SpokeyDokey]

Thanks.
Yes, when I operated the trim when on the large CR, nothing seemed to happen, no movement, if there was then it was negligible and not enough to do anything.

Okay. The trim shift should definitely be noticeable.

These are the 4 cage positions you should have (NB in positions 3 & 4 the chain will be on the large CR and in positions 1 & 2 the chain will be on the small CR):

When you shift from the small CR to large CR the cage should move to the HIGH position.

There should be 3 distinct steps to move from the above position to the LOW TRIM position.

If you do not have 4 positions the FD is not properly set up. Not everybody realises that there are 4 positions as older FD's had 3 positions (and maybe before that, just 2!)

Maybe the Mechanic that set your bike up is not aware of this - stranger things have happened!

Also, as @bikingdad90 has stated the cage looks way too far to the right in the large CR and small cog position.

On the face of it the FD has been very badly set up.

 

[newts]

The outer limit screw needs setting correctly & cable tension accordingly.

 

[Grant Fondo]

On the face of it the FD has been very badly set up.

Looks that way. Will be fine with a bit of adjustment.

 

[SpokeyDokey]

@Sloth

How is this progressing?

 

[Sloth]

@Sloth

How is this progressing?

I’ve been laid up with a bad chest infection so haven’t really been able to move forward.
I had notified the bike shop, but I suspect they are beginning to lose interest.
I intend to call them this week though, once I can talk without coughing!
I thought that the trim literally wasn’t moving when on the large CR, as when I looked down (as best I could without falling off) it didn’t seem to move the front DR at all. However when I got home and tried it when off the bike it did move, around 1-2 mm. So whatever is causing the excessive noise on the large CR may not be due to the FDR? Also there seemed enough clearance with the chain guide, so I really don’t know.

 

[Sloth]

Well the (not so) local bike shop fitted a new ‘Ultegra’ chain on Saturday, and also cleaned it (from factory lube) and the drive train/cassette etc up. They then put the first application of ‘squirt’ (E-bike) wax chain lube on, and checked the indexing etc. I did the 2nd application later the same day.
I then left it overnight and went for a ride the next day (Sunday).
Anyway, apart from my legs not seeming to be in the mood, the bike performed flawlessly, gear changes were slick, and chain noise?….well here’s where it gets confusing. At first I thought there was an irritating click or creak on more or less every pedal stroke. My heart sank, this was worse than before!
However as the ride progressed I started to realise that this ‘click’ was apparently in every gear combo. Then I did a few tests of standing off the saddle, and as far as I could tell the click stooped! So could it be the notorious carbon fibre seat post syndrome again?
I also changed to the large CR and spent some considerable time on that, and it seems to be a lot quieter now, so it seems the new chain and lube are doing what I hoped they would.
All in all the bike is now a lot quieter, apart from that annoying click/creak.
When I got home I removed the seat post and applied more gripper paste, re-fit it and ensured it was tightened to the correct torque (6Nm).
Now, I haven't been on another full ride yet since doing this, but I did briefly take a short spin up the road and back after doing the seat post, and so far so good. The noise started pretty much immediately when I did my ride earlier so this is encouraging.
Of course I may be popping the champagne a little too soon, so I’ll be happier once I’ve done a full ride without the clock/creak.
Back on topic though, the chainring noise seems dramatically improved!

 

[fossyant]

Well, at least you are keeping the bike shop running !