Quote:
Originally Posted by dddd
I would maybe test that theory with a drop of WD40 first, seems like possibly a lot of unnecessary work on a bike that will never suffer corrosion on the seat tube.
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It's not corrosion that causes the issue - it's galling. Both the Ti seat tube and aluminum clamp gall easily and over time the flex of the system causes the two parts to rub off on each other. A drop or two of oil probably won't cure it and I don't really see undoing a single bolt and wiping things down and putting it back together as a lot of work. If it takes 5 minutes in total that would be a surprise.
Back in the day when we released the Legend Ti we had a lot of complaints out BB noise and it took a lot of time to figure out it wasn't the BB at all but it was the front der clamp. The Shimano adapter was the worst offender (being tall it rub on the seat tube more) but we saw it with most any der after some time passed. We issued a service bulletin at the time and the number of issues dropped to almost nothing.
If one takes the front der off and there are any areas where the seat tube has a smooth and glassy black area that's the source of the noise.
dave