So I've been having an issue with my mountain bike. When climbing I get a light pop, clunk, or whatever when I reach the bottom of my stroke. If it's not under a heavy load (for instance flat ground) it doesn't do this. I'm wondering if it comes from the crank/bb. Everything else works fine but it's distracting. I was hoping you guys could help me identify the culprit and course of action. Thanks.
Panthers: The chain should be about right. I checked it and it has about one link overlap. Also recent developments lead me to believe that it's not the chain.
So...before anyone got back to me I took it into the local coop. We tried to tighten everything up and when that didn't work we were going to check the bb. Apparently my crank arm is fused. The crank puller was stripping the threads on the crank. So we stopped and put the crank bolt back in. Now the light pop is an audible click. I think it's going to drive me mad. I'm planning on selling the bike in a few months but I want it to be in good working order. Thoughts?
So if you have an Octalink in your bike, and you left the washer in there when you tightened down the crank-extractor, you were working against yourself. Solution: Remove the washer. Now thread-in the extractor.
If you're going to buy an extractor - I recommend the CWP-7 Park Tool.
<EDIT> In the video on this subject from the BicycleTutor, you can see the washer I mention. In the video it comes out with the crank-bolt and is not specifically mentioned. I'll send a note to Alex to remedy this. While it shows it coming out, most often, in my experience, it does not come out with the bolt. It requires deliberate coaxing. Here's Alex: