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I NEED YOU HELP - What Do You Think??????(14 posts)

I NEED YOU HELP - What Do You Think??????cjwill
Aug 12, 2003 1:39 PM
*New Trek 5200 "04"
*Less than 3000 miles
*I ride it every other day 37 miles (long on sat club rides)
*ME: 218#
*Problem: I'm hearing a slight pop/knocking noise when I peddle (down stroke left hand side, about 8 o'clock position)
*Shop: tightened BB twice, replaced BB yesterday. "They Hear Nothing".

*CLUE: the noise only happens when I ride out of the saddle.

Conclusion (lets here from you)
pedals? (nm)ColnagoFE
Aug 12, 2003 1:40 PM
Agree! nmthe bull
Aug 12, 2003 6:48 PM
All noises eminated from the BBKristin
Aug 12, 2003 1:42 PM
The last time my BB was creaking it turned out to be a loose headset. Good luck!
Of course! Always the BB until you isn't. (nm)PseuZQ
Aug 12, 2003 2:13 PM
Unless its a mountain bikeMel Erickson
Aug 12, 2003 3:10 PM
Then all noises eminate from the rear hub. Happened to me recently. Sounded like my rear hub was going to destroy itself. It's a Real hub which is notorious for self destructing. I had others listen while I rode and everyone swore it was the rear hub. Took it in to the shop. Guess what it was. The bottom bracket!
Whoa...My 5200 does the same thing.PseuZQ
Aug 12, 2003 2:11 PM
I'd say they were from the same litter but mine's older and more beat up.

The first time it happened it was my cleat. I replaced it and the click-pop went away. What kinda pedals you got on there? (I have speedplay x2s)

The second time happens to be now. And I don't really know why, although it could very well be the cleat again.
When people sayMel Erickson
Aug 12, 2003 3:06 PM
It only happens when out of the saddle I immediately think bars/stem. I've had that problem before. What are you doing differently when you're standing? Probably pulling and pushing on the bars, right? First place I'd start.
re: I NEED YOU HELP - What Do You Think??????filtersweep
Aug 12, 2003 3:27 PM
Might even be at the drop outs- front or rear, but more likely front?

Also, I had an annoying ticking sound that turned out to be a cable endcap rubbing against the crank... good thing I didn't tear the bike apart looking for the cause.
re: I NEED YOU HELP - What Do You Think??????Drone 5200
Aug 12, 2003 6:43 PM
My new 5200 did the same thing. Rythmic clicking sound at the 9:00 o'clock position on the left crank. What could it be? Ride, obsess about it, ride some more, stop and look at it, worry that its the OCLV cracking, the bike's gonna explode . . . etc.

Turns out the cadence magnet on the crank was hitting the sensor. Click, click, click. Duh! You'll find it.
I think I have your solution!Uncle Tim
Aug 12, 2003 8:36 PM
Well, I can't say for sure that I have the solution, but there is a known issue with both Rolf and Bontrager wheels that you need to rule out as a possibility.

The creaking while standing raises a red flag to me. I've seen this drive many Trek owners batty.

Do this:

1)Remove your front wheel from the fork.
2)Wipe the dropouts clean.
3)Rub a thin layer of grease along the inside of the drop outs. A little on the outside won't hurt, either.
4) Replace the front wheel and see if the creak is gone.

If it works, please let me know. Good luck.
I think I have your solution!TNSquared
Aug 13, 2003 7:20 AM
So what is the issue (the actual cause, not the noise), and are your suggestions designed to cure it or rule it out?

I'm just curious since I am riding Bontrager Race Lites and have had no problems at all.
I think I have your solution!Uncle Tim
Aug 13, 2003 12:57 PM
There's something about the metal on the hubs where they lock into the drop outs. Under heavy stress (like standing on a hard climb), there's a kind of mini-movement there that will result in a creaking sound if done just right.

Usually, it's bigger riders who cause this.

The little layer of grease will allow keep the creaking from occurring.

I've had this problem with my Trek 5200/ Rolf Wheel combo and I've seen it completely baffle very competent wrenches. One shop just caked in tons of grease into a cyclist's headset, in a futile attempt to erase the creaking. The poor guy fianlly did as I instructed and his problem went away.
re: I NEED YOU HELP - What Do You Think??????cjwill
Aug 13, 2003 2:12 PM
thank you for all of your input. I will check it further

going crazy over it.......ahhhhhhhhhhh!!!!!