We've had a rash of, "I've got a funny noise in my bottom bracket." complaints lately. This is the story of one of those.
The bike was put in the stand, turned on its nose so I could work on removing the crankset, and then noticed the floor getting wet under the head tube. (See that drop of water coming out of the head set?) I estimate I saw about 6 ounces come out of the head tube. Nice!
The outboard bearing crank was removed from the carbon frame and this was what I found. Looks like a sewer pipe in there!
It used to be that drain holes were a common feature of road bike frames. You know, water is going to get inside of your frame if you ride in the rain. A drain hole lets the rain out. Brilliant, huh? Well, somewhere along the way, this practical, cheap solution to a common problem has been eliminated by manufacturers. Dumb.
Then there was this sludgy mess. I don't know what causes grease to coagulate into clumps like this. Certainly, there is more than just water and grease here. I don't want to know what though!
Maybe this guy rode without his seat post in the rain, but I doubt that seriously. Still, the amount of solids here is amazing. A drain hole may not have even helped in this situation.
Anyway, I cleaned everything up, re-greased, re-installed, and everything quieted down as it should be. I suppose I could have stuck a hair dryer in there to dry out the inside of the tubing! Ha! This bike should be taken apart and overhauled, but he was in a hurry to get it back, so....
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Finally, I got this repair ticket yesterday. You can judge for yourself what it says, but all I gotta say is, I ain't no plumber! I am a bicycle mechanic!
The guy who wrote this up and I had a good belly laugh from this one!
Sometimes when it is busy, and you are in a hurry, well.........you know?
3 comments:
After the VT 50 last year, I dumped a gallon of water out of the down tube of my RIP. Every bearing was toast, as were my gear cables and drivetrain.
i hate fixin' shitters!
Love it!
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