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37 comments
Thanks! So the 80+ year old bike technician recommended by another Canyon user, met by chance while riding, seems to have fixed the 27t sprocket by very carefully getting at it with tiny hammer & chisel + file. Just before he was getting ready for a good climb (I live in the South of France) with his long-time mates. So far no noise. I'll see what's what in the next few days....
Thanks to all for taking the time to help me find a solution!
H.
@kil0ran: thanks!
I have to say, to Canyon's merit, that I agree with mike the bike.
Sprocket little issue aside, the bike's just great.
That said: if I could fix it without reurning the cassette to Canyon (which is what they suggested) it'd be great..!
New Canyon? Not a surprise. Check and tighten everything. My mate just dropped nearly 5k on one and had no end of problems. Rotors only finger tight, front mech only finger tight. Keeps dropping the chain, resulting in it bending and needing replacing. Don't assume everything is good because it's new.
I know two people whose Canyon deliveries were late but all three of us are agreed about one thing - the bikes were immaculately built. My own Endurace was easily the best prepared of the half-dozen bikes I've bought online, down to an almost fanatical level of detail. I guess you need a little luck ....
His was late too. It's been to bike shops half a dozen times in 6 weeks, and he's been injured for half of that. Unfortunately it's now past 30 days, so can't send it back. He's considering selling it already.
Problem solved about the brake caliper, it being an easily available BR-8070...
Concerning the 27t sprocket: can anyone advise where to buy one? It would be for the Ultegra 11speed 11/34 cassette...
Thanks!
Not many places sell part cassettes but SJS Cycles do - https://www.sjscycles.co.uk/cassette-spares-shimano/
I don't see it on their list but they can probably source it. Just need to know which series the cassette is (R8000?) - then look up the exploded view on si.shimano.com for that particular model, it will give you the Shimano part number.
If it is R8000 then this is the part number - it's the final cluster (27-30-34) of the cassette that's sold as a unit. Might end up being cheaper to buy a whole new cassette.
Y1WH98030
Hi,
And thanks!
Looking at the Shimano Products Compatibility Information page (and sorry, I don't seem to be able to link the file, only download it..) on page 31 they mention both but I can't work out what's what..can someone help?
Not sure about those two particular calipers but the thing to watch out for is the diameter of the hose. There are two different diameters and older systems tend to user one and newer systems, the other.
On a side note:
Can someone tell me where I can buy the Shimano Ultegra R8020 front brake disc caliper?
Or: is the R8070 (easily available online) fully compatible....?
Thanks!
Hi,
So the guy at the LBS said: no issue with anything else...a tooth of your sprocket (the 27t) is "malformed" and the chain "sits" on it's edge for a fraction of a second before being pulled downward......hence the clicking noise
!!
Thanks for that!
I'll check it this morning.
Please note that someone told me yesterday night that my derailleur is not straight/not parallel to the back wheel, but it's actually "inclined" so that the bottom part is slightly outwards compared to the top part....
That can happen with long cage derailleurs, mine does it too, its not a fault. Only if you have knock against the derailleur would you then examine hanger and derailleur alignment.
You're concerned mostly with the upper cog on the derailleur and chain alignment going around the cassette and cog. Sometimes its a fraction of a mm to adjust to clear up annoying clicks etc.
If slighty moving the deraillrue by hand inwards or outwards removes the clicking. Then using the barrel adjuster(where the cable enters the derailleur) turn it to move the derailleur the direction that clears the clicking/catching of chain.
I refer you back to the Shimano instructions for guidance SIS adjustment pages 20-22
ok, so I did as suggested by CXR94Di2 and fortunately it's not the crankset.
On the other hand I tried to push slightly the chain towards the wheel wile turning the pedals with the bike lifted from the floor, again in the 30-27 combination, and I could definetly not hear the clicking...
Basically if the chain is closer to the wheel/tyre there is no noise.
Does that mean the chain/derailleur has to move slightly inward?
Can't see how it would be the BB, but check the chainring bolts are tight. It's unlikely to be that because chainring bolt noises usually only manifest under heavy load, but worth checking. If it's Shimano they're accessible from the non-drive side and are either a T25 or T30 torx head.
ps: it's pressfit
I can try removing the chain but...if it's the BB, why would there be noise only when in 34-27 (or 50-37)?
ok
actually tried now
the noise is definetly coming from the "crankset area"
I can feel it when turning the pedal (in reverse) and feel it on the bottom part of the frame too.
Tried barrel adjuster with no change and the chain is perfectly "snug together"
Every single link of it.
If the chain has a split link take off the chain from crankset. listen to the crankset turning slowly. If it clicks its most likely its the bottom bracket (is it press fit ?)
gosh
I realize how hopeless I am!!
Tonight when home I'll give it a go and report...
Hmm - loose cassette lockring?
Not familiar with how the Ultegra RX cassette splits, could it be that everything is not snugged together perfectly on the cassette and so there's a small amount of play between the main cassette body and the big 36 & 32 rings?
Not knowing how your chain was put together, but... if it's using a conecting pin, rather than a quick list, I'm wondering if that pin on the chain isn't installed perfectly, and is protruding just enough to impinge on the adjacent cog on the cassette.
Here's a Park Tools video (https://youtu.be/VdUQKVMPF5I?t=449) which shows the importance of getting this pin just right.
Locate the connecting pin (it will look ever so slightly different to the rest of them) and check that it does not protrude excessively on the inside (the side facing the wheel). If it does, carefully move it outwards with a chain tool and see if that makes a difference.
I once fitted a connecting pin myself and made a bad job of it and the chain broke when I was climbing a rather steep hill. So yeah, you probably want to check that's not the problem.
ok
...how do I do that?
The derailleur adjustment?
There should be a barrel adjuster on the back of the derailleur. Turn it a quarter turn at a time (clockwise looking from the back of the bike to reduce tension, anticlockwise to increase tension) and see if it stops the noise. As long as you remember how many turns you've made you can always put it back to how it was if it doesn't help.
Leave the hi-low screws alone unless you know how to set the limits up. Chances are in this instance they won't make any difference, and could end up putting your derailleur through the spokes which you really don't want to do.
Its worth watching a few videos on setting up and indexing the derailleurs, good skills to have and really not hard.
Check the derailleur adjustment. I have had similar and it was the chain slightly catching the next sprocket on the cassette. Most likely needs slightly more tension on the cable.
....bike's brand new
<250km on it
it's a Canyon Grail
My experience of these kind of regular clickings have been related to the chain, twice a link has been coming detached and once a stiff link clicking as it negotiated the jockey wheels.
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