*Edit* I questioned if there was a possibility of this noise being related to any accessories I put on the bike or adjustment I made and it may be due to adjusting the seat clamps and not putting Loctite back on them. The seat did come loose during this event. I went on a ride for about 80 miles over the weekend and there was no noise after using Loctite on the seat clamp bolts. It's hard to believe that could be the noise I was hearing, but it might have been echoing possibly. I'll be relieved to not hear it anymore for sure!
My fourth ride on my brand new Cervelo R5 was at the Big Dam Bridge 100 in Little Rock, AR. I wanted to ride it at an event with a little climbing involved and I was not disappointed with the climbing prowess of the bike. I was alarmed by what was not simply the widely reported clicking noises coming from the bottom bracket, but what I would more describe as very loud rattling over rough pavement coming from the bottom bracket. I've ridden it probably 130 miles prior to this event and I never heard anything at all.
At first I thought I must have not tightened my new carbon water bottle cages well enough that were making their first ride or that my hand pump was rattling, but I more and more seemed to believe it was the bottom bracket. It was pretty loud. I could never find anything that even looked loose. I think it has to be inside the bottom bracket.
I'm going to try to verify that it's not the water bottle cages and/or pump and call the dealer that sold it to me and see what they have to say, but I see a lot of people who have had to make many trips to their dealer to try to get these issues resolved and I don't intend to drive back and forth endlessly trying to get it figured out. I will have to use an authorized dealer closer to me if they can't fix it properly.
I found this website this morning that doesn't inspire confidence http://roguemechanic.typepad.com/roguemechanic/cervelo-bbright-solution.html
Anyone else experience loud rattling from their bottom bracket over rough pavement? It was NOT the regular clicking noise during pedaling that I already knew was reported to be an issue that seemed to be an easy fix with Loctite. This was a rattle that could be slightly muted if I just stood on the pedals over rough pavement, but while pedaling was LOUD.
It was embarrassing btw to have a brand new retail $7,500 bike that sounded like it was about to fall apart.