chadtrent

I have a 2020 Canyon Endurace. Has about 200 miles on it. The last coupe rides I’ve started to get a clunking sound when I pedal. it makes the sound in time with crank rotation. Does it mainly in the big chainring when I’m pedaling hard like going uphill.

I have checked what I can but can’t find the source of the sound. So I’m hoping for some guidance.

Here is what I’ve checked:

pedals (swapped to another set - sound still there)
shoes/cleats - it does it even if I ride in regular shoes not clipped in
cassette is tight
checked the stem/headset/fork to make sure everything is tight
no broken or loose spokes
axle is tight

i can’t recreate the sound in the work stand. The only thing I can think of is something in the wheel itself or the bottom bracket. I can’t swap wheels because this is the only through axle set I have.

Anyone have any ideas?

curbtender

Hows the derailleur adjustment? Could be trying to shift under load.

chadtrent

Hmm. I hadn’t thought of that. It’s shifting fine. Has to adjust the limit screw on the front because it was starting to rub in the 52/11 but I haven’t looked at the rear one. But I’ll take a look at that.

dsbrantjr

This should be addressed as a warranty matter with the place you bought the bike; don't do anything that would void that warranty.
Check your bottom bracket and cranks, including chainring bolts, for proper tightness.
Also, you might try shifting to the small chainwheel and spinning faster rather than mashing in high gears going uphill, that is kind of the idea of dual (or triple) chainrings.

Retro Grouch 

Why don't you want to take it back to the dealer to figure out? It's almost surely going to turn out to be something simple. If it's not and turns out to be a warranty issue, you'll probably have to work through them anyway.

chadtrent

Well considering there are no Canyon dealers it may be a little difficult.

chadtrent

The small chainring would be too small. I really notice it on one particular hill on my way home from rides. I climb it at about 15-16 mph. And it’s flat before and after it. Doesn’t really make sense to go down to the small chainring. I go to the small chainring for climbs but this isn’t a climb really.

As for the warranty - I’d have to send it back to California (I’m in VA) to get that done.

MNebiker

I had a similar issue, checked pedals, BB, etc. Then checked the crank arms - bolts seemed tight but I gave them an an additional 1/8 turn and eliminated the noise.

curbtender

You a big guy? Me being one, I can flex the large chainring when I'm pumping up a hill.

chadtrent

Yes. And not bragging but I have pretty strong legs too. 30 years of playing hockey will do that for you. Used to be able to squat 550 8 times.

chadtrent

Just wanted to say thanks. The rear derailleur was the culprit.

curbtender