I was out for a ride on July 6th on my Cannondale SuperSix Evo, when I began to hear a clicking noise emanating from the bottom bracket. I recorded this video: and sent it to my personal mechanic for his input. After watching the video and doing some online research, his conclusion was that the bearings in the bottom bracket were going bad and would need to be replaced. Having just gotten the bike in January (less than 6 months ago), we were shocked that bearing replacement would be necessary already.
The next day I went out and turned the cranks on the bike and there wasn’t any clicking. So I decided to go for a ride. 25 miles later, I returned home without any clicking from the bottom bracket. On each ride that week, the clicking would sporadically appear and disappear. I finally decided that I needed to get the bike in to Treads for service. When I called, they were unable to fit my bike in until the following Monday. This was unfortunate because I was riding in the Triple Bypass on Saturday. I went ahead and scheduled the appointment and decided to take my chances on riding the Triple Bypass. The worst case scenario would be listening to that clicking for 120 miles… but because the clicking had been so sporadic all week, it was possible that it would not make any noise at all. Fingers crossed!!
On the morning of Saturday, July 12th, I began the Triple Bypass in Bergen Park on Squaw Pass Road. As I pedaled along, the only noises coming from my bike were the occasional sounds of shifting and the normal noise the chain makes as it moves along the cogs. However, after remounting at the first Aid Station at the top of Squaw Pass, I heard a couple of clicks as I pedaled away. I began the descent into Idaho Springs shortly thereafter and hoped that by the time I got to the bottom, the noise would resolve itself. This was not the case. As it became necessary to begin pedaling after the descent, the clicking continued to get worse; eventually it became more of a grinding noise.
The silver lining to having my bike make this noise was that I no longer needed to announce to anyone that I was “on their left.” In fact, I had a few people actually begin to look around in bewilderment as I approached. I was told on more than one occasion as I passed that they thought the noise was coming from their own bike. How I wished that were the case. That noise went on for 90 miles. 90!!!! I had people make jokes about it as I went by, others just shook their heads in dismay. Still others were certain that they knew just what was wrong with my bike. One person suggested that I get off and check my cadence sensor because her bike once made the “exact” same noise and that’s what it was. Another suggested I had a stowaway cricket. My favorite was that I just needed to lube that chain!
The wonderful mechanics at Treads had my bike back to me within a couple of days. The issue, you ask? It was indeed the bearings in the bottom bracket and not the cadence sensor, not the chain in need of lube, and not a cricket.