Something clicks while pedaling My road bike with square taper Chorus crankset has developed a click when pedaling. The click happens always in the same pedal position, right crank forward, on both chainrings. Since the noise started, I have reinstalled the cranks, tightened chainring bolts, and replaced the seatpost, pedals and wheels. The bottom bracket rotates smoothly when cranks are not installed or without chain. The click only occurs when pedaling with force, and happens when standing up so it very probably is not the saddle or seat post. The most mysterious part is that the click goes away in rain or even humid weather. Any ideas? EDIT: Since this got a "popular question" badge and duplicate, situation update: Since I posted the question, I have switched pedals a couple of times and replaced the chainrings. The click remains the same.

In the end it turned out that it was bottom bracket bearings. It seems that last generation of high end square taper Campagnolo had small bearings that were notorious for this. It was not the cups with threads, because I could find only a BB cartridge for different standard and reused the old cups.

The strange thing is that when uninstalled, the bearings feel completely smooth.