Originally Posted by
gpelpel
Two other areas to check but according to your description #2 might be the one. I had this issue with my new wheelset.
1) Check the cassette.
Is it loose? A loose cassette will generate clicks.
Is one cog loose? A cog not properly inserted on the hub (possible with Campy) will make a clicking noise when in use as it is allowed to make a back and forth small revolution on the hub.
That's one I didn't know about
It's an SRAM cassette - the bottom 8 cogs are in one unit with the last one loose (I think, maybe 2). It's been on for about 600km so is possibly due for something like this (doncha love the mix of ages in what is essentially a nearly new bike, the joys of building your own bike from bits
)
2) Are you using tubes with threadless stems. My Michelin tube stem made noise on rough roads as they were banging on the rim wall. Pinch the stem between two fingers and shake them, if they make a rattle noise use a tubes with threaded stems or use some tape.
I am actually, however, these tubes have been in there since the bike hit the road 1,300 kms ago so I don't think it's them. However, I will check and bear it in mind for the future because I think they are a really really good idea (because you can get your pump on and off easily
)
The noise is not confined to rough roads - it will do it quite happily on a brand new, dead smooth bike path the local council just put in (they must've been having an off day or had a new bloke working for them because their new paths are usually horrendous).
Richard