After my bike ride today, I decided to give my bike a much needed cleaning. However, while cleaning it I discovered that it is making some less than pleasant noises. So, I am hoping that some of the bike people out there can help me diagnose the problem and save me a trip to the LBS.
Here is the first video. In this video, I start by simply turning the pedal in reverse. Now, I know that some clicking when pedaling backwards is normal, this seems excessive. Half way through, I switch to holding the back wheel off the ground and spinning it by hand. When moving forward, there is no noise. However, when spinning the wheel backwards, there is a definite crunching noise. Also, if I turn the pedal backwards for a while, the chain will eventually bind up on the big sprockets. When this happens, I have to pedal forward to reseat the chain.
Here is the second video. In this video, I lifted the rear wheel off the ground and spun up the wheel using the pedal. I get a louder than normal whirring along with some of the crunching sound intermixed.
My initial thoughts that I have sort of dismissed. The first thought I had was the wheel bearings. I last overhauled the rear bearings at the beginning of the summer (about 2,500 miles ago at 3,500 miles). At the time, I repacked the bearings simply because I was replacing the cassette and chain and figured I would just do the works. There really wasn’t any evidence that the bearings were in need of an overhaul at that time. So, it seems like needing another overhaul only 2,000 miles later seems too soon???
In the second video, the whirring noise sounds a bit like the wheel being out of true. However, I just had the wheel trued up about 2 weeks ago when I had a broke spoke fixed at the LBS, so that seems unlikely.
So, what do I think it is? My semi-educated guess is the freehub body – mainly by process of elimination. What do you think? Have you ever had a bad freehub body? What are the signs that is is wearing out?
I’m hoping this is an easy fix. Although, Jennie’s suggestion was that it might just be time to replace it with a new bike!! Can’t argue with that!
Any help would be greatly appreciated!