Have you noticed that almost every squeak, creak, and groan from your bike "sounds" like it is coming from your bottom bracket? Fitzy and I were discussing the fine art of troubleshooting mysterious bike creaks last night and we agreed that the bottom bracket is rarely the culprit.
I am currently in the process of chasing down a mysterious creak on my singlespeed and I think I have narrowed it down to the rear wheel. Specifically, I "think" it is the interface between the cassette spacers/cog and my DT Swiss SS rear hub. I tried to address it by greasing the faces of each spacer and the cog but after riding for about an hour the creak started to return.
Has anyone else seen this before?
Rear Hub: DT Swiss 240 SS
Cassette Spacers: Aluminum, DT Swiss (came with hub)
Lockring: DT Swiss (came with hub)
Cog: Chris King SS, 20T
Chain: SRAM PC-1
EDIT: To eliminate other variables, I did the following first:
1) Cleaned & re-greased bottom bracket
2) Cleaned & greased pedal spindles & pedal washers
3) Cleaned & re-greased the chainring/XTR crank interface
4) Cleaned & re-greased the chainring bolts
5) Checked tightness of rear skewer