This one has me stumped. It's a chattering creaking noise which has been getting gradually worse for the last couple of thousand miles.
It happens in free wheel as well as under load, so it isn't the BB or drive train.
It disappears when I stand on the pedals, so it isn't the bars, front forks, bottle cages, hubs, spokes, rims etc.
It isn't the saddle because I've swapped it today and it makes no difference.
It isn't the seat post because that is so firmly welded in place that I'm going to have to take it to the LBS to shift it (yes, I know, why did I forget to take it out and clean it off last year?)
All I can think of is that one of the welds at the top of the seat tube is coming adrift, but I can see no sign of that at all. It is a bare metal Ti frame, so there is no paint to cover anything up.
Any ideas? Anything I can spot visually?
It happens in free wheel as well as under load, so it isn't the BB or drive train.
It disappears when I stand on the pedals, so it isn't the bars, front forks, bottle cages, hubs, spokes, rims etc.
It isn't the saddle because I've swapped it today and it makes no difference.
It isn't the seat post because that is so firmly welded in place that I'm going to have to take it to the LBS to shift it (yes, I know, why did I forget to take it out and clean it off last year?)
All I can think of is that one of the welds at the top of the seat tube is coming adrift, but I can see no sign of that at all. It is a bare metal Ti frame, so there is no paint to cover anything up.
Any ideas? Anything I can spot visually?