Annoying sound :(

[stormur]

Starting from the end : I exclude EVERY other sound. And still have "clicking" coming from seat tube area.

to avoid misunderstanding : it's NOT coming from BB ( out of saddle is silence ), it's not saddle ( switched 3 ) not saddle clamp ( lubricated ) not seatpost clamp ( changed 3 ) . Left seatpost. To be more precise its length : thing is 400mm long, 260mm seats in seat tube.

Cutting seatpost voids warranty, so I have to be quiet sure before shortening the thing( proprietary ) ...

But , IS IT POSSIBLE AT ALL that "to long" seatpost is "clicking" , or rather knocking inside seat tube ? I happens ONLY in certain situation : in saddle, cadence 90ish, avg power ( not light spin, neither hammering ).

Did it happened to anyone ?

[AJS914]

Do you have a spare seatpost/saddle from another bike you can just swap in place?

[rapsac]

If used, try another friction compound (if carbon post). Eg effeto mariposa carbogrip or motorex carbon assembly paste.

[dj97223]

Have you checked/changed the front and rear skewers?

[stormur]

I tried already 3 different carbon assmbly compunds ( Pinarello, Ritchey, Tacx )... and without any compound as well.

temporary no access to same dia post
skewers are DT RWS-> no chance for any sound from there

[AJS914]

Have you checked/changed the front and rear skewers?

That's a good idea. My mystery noises in the past have usually come from skewers and saddle/seatpost.

[stormur]

it's bad idea. if I raise butt just 1mm above saddle noise is gone. it's coming from the line butt-seat tube.

[velomane]

I've had noise that went away when I got out of the saddle. A very thorough cleaning of both front and rear wheel skewers solved the problem.

[stormur]

skewers new and greased

[AJS914]

Then either try a different seatpost or get out the hacksaw.

[stormur]

hacksaw voids warranty for 3k€ frame, so it's kind of "last resort" solution. Have to arrange short post... Had while ago long posts seating in, but never such issue ...

[AJS914]

I thought you meant that the hacksaw voids the warranty on the seatpost. How doesn't it void the warranty on the frame? Some kind of integrated setup?

[stormur]

yep. unortunately.

[alcatraz]

Just continue riding. If it's a bearing it will get worse and the location will sooner or later reveal itself. Lesson learned....

/a

[stormur]

no idea what you smoked, but I'm jealous...