I purchased my first road bike at the beginning of August and starting to understand why the guy sold it to me so cheap. It is a Trek Madone 5.2 with Dura-Ace cranks, & Velocity wheels. I know very little about bike mechanics and have had a very hard time getting a squeak issue fixed. I feel like I need to give the mechanic at my LBS some more direction or things to fix, because he hasn't figured it out yet.
The issue with the bike is a squeak that sounds like it is coming directly from the cranks. The squeak will not happen when the bike is cold - it must heat up...typically between 5-10 miles into a ride. The squeak only occurs when I am pedaling in the middle gears at a high cadence, and the squeak is directly caused by my pedal stroke (if I'm not pedaling, its not squeaking). Also, it is not just the left or right pedal - both cause the squeak. If I put the bike in a low gear or pedal slower, the squeak goes away. If I put the bike on my kinetic road machine, I cannot produce the squeak. So far I've taken it in to my LBS 5 times - here's a run-down of each visit:
Visit 1: Said my chain was old, replaced the chain. Next ride, still squeaking.
Visit 2: Said my rear hub was loose, tightened hub. Next ride, still squeaking.
Visit 3: Took apart bottom bracket, re-greased, put it back together. Next ride, still squeaked.
Visit 4: Mechanic did nothing. Told me to try a different rear wheel; I borrowed a wheel from a friend, rode 20 miles all out, no squeak whatsoever.
Visit 5: Took in my rear wheel, they tightened the spokes & hub. They said the wheel is in perfect condition, they would not recommend I buy a new rear wheel because absolutely nothing is wrong with it. Next ride, squeaked once again. Back to square 1.
Before Visit 6 happens, can anyone offer some ideas on things for the mechanic to try? This guy is not an idiot - he has been recommended by multiple guys in town, but can't seem to fix my squeak.
Other things I've tried on my own that have not worked:
-Switched pedals from shimano to eggbeaters
-Tightened my seat post
-Loosened my rear brakes all the way
-Tightened the screws on my cranks
Thank you for any suggestions, advice, opinions, etc.