It appeared a few weeks ago, and it's most annoying on good roads, especially when goes uphill. If you can imagine crank arm hitting front derailleur, very, very slightly, that's probably most precise description. You can hear it, and you can feel it under foot.
On not that smooth roads, it's like isn't there, but as soon as you hit good asphalt ... It's a little bit annoying and most annoying is that I can't figure out from where exactly does come from.
Luckyly, that pop up just before I swap Ultegra crankset with Dura Ace, so I know it's not that part. I told my LBS guy to look at BB if can see something, but there is nothing strange. So I presume it must be somewhere behind. Can be a chain, can be cassette and maybe can be something with back wheel. I changed all of this in last few months, but everything was alright till recently.
Anyone has clue what this could be? Where to start looking?
It isn't there with each pedal stroke, but you can't make 5 or 6 of it without that "click". Sometimes is less obvious, sometimes will hear it a person standing by the road. Btw. shifting is excellent, if that's matter. And I can't feel by the hand that cassette has loosened or something like that.
And additional problem is, you can't hear it on bike stand, you must sit and ride, put pressure on pedals.
