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click click front drivetrain somewhere click click click(13 posts)

click click front drivetrain somewhere click click clickHaiku d'état
Aug 9, 2001 5:43 AM

* clicking loud enough to be quite annoying and drive me completely nuts (short trip), but not loud enough to be heard in a good headwind. heard easily by my riding partners.

* ride around the block doesn't do it. i have to ride up the street and give the cranks some torque to get the clickety clack.

* cannot duplicate in the repair stand.

* i can hear but not feel the clicking.

* it might be in the same position in the crank revolution every time, but i'm only 70% certain.

* sounds like it's coming from the drive side, and it's most certainly up front.

* bike/chain/components have between 1500 and 2000 miles on 'em since april

what have i done so far?

* closely visibly inspected the front drivetrain
* checked tightness of water bottle cages
* adjusted front derailleur
* confirmed that the front derailleur cable end is clear
* cleaned the chain
* checked every chainlink by hand for damage or stiffness
* lubed the chain
* checked tightness of chainring bolts
* checked chainrings for damage
* checked tightness of crank bolts
* put on another pair of pedals
* tried another pair of shoes

I have a crank puller and bb tool, but have only used 'em once, and on a beater.

help me obi-wan kenobi, you're my only hope!
re: click click front drivetrain somewhere click click clickMike Prince
Aug 9, 2001 6:03 AM
Check the front derailleur clamp. I had a similar click a few months back on one of my bikes, and this clamp was just a bit loose. Every time I really stood on the pedals, I got a click. Tightening the clamp just a bit took care of it.

It could be your BB, which is not a big deal to adjust as you have the tools. Either a cup is loose or the BB is shot or needs maintenance. Just remember that both BB cups thread on counterclockwise to tighten and you will be fine. Should only take a few minutes to adjust/tighten although it is messy handling the chain.

As a last resort check the frame. It's possible that you could have a crack near the BB, but probably more of a long shot.

No HAIKU today? Too bad, you gave me a chuckle yesterday. Good stuff. Hope this helps.

checked the der screws (negative). question re: pulling cranksHaiku d'état
Aug 9, 2001 6:12 AM
thanks, mike!

checked the front der hex nuts & associated parts, nothing loose. forgot to mention (!). couldn't find anything up there complaining, but i didn't check for cracks yet.

pulling cranks to get at the bb is easy enough, but i read someplace that these guys (105 hollowtech) are splined and have to go back in just so or they'll ruin the bb, or something. is this true, and easy to tell?

no haiku yet, but i'm still caffeinating.
re: question re: pulling cranksMike Prince
Aug 9, 2001 6:26 AM
The 105's are easy (I have them on my Cannondale) as they do not have self-extracting bolts. The key is when you put them back on take some care to ensure the crank has engaged the spindle correctly. This is easy to see as there's no bolt in there to obstruct your vision. Re-assemble by hand and re-install the bolts, if the bolts suddenly feel funny or bind back them off and check everything again. Just take your time and you will be fine.

A few other ideas before you do "surgery" - could the crank be hitting the end of the FD cable? Does the noise occur when standing or riding no-hands? If not it could be something other than the BB (stem/HB or seatpost) as noises can be hard to pinpoint sometime.

Good luck...
re: click click front drivetrain somewhere click click clickcycleguy
Aug 9, 2001 7:05 PM
Dumb me but I have had the same problem more then once. After checking all of the real reasons why. Turned out to be my front der. cable. Just got bent and hit the crank on some rides. Stupid, no reason why, but anoying as hell.
Check the rear axle.Cima Coppi
Aug 9, 2001 6:26 AM
I had a similar problem that seemed to eminate from the bottom bracket region. If was driving me up a wall when nothing I "fixed" solved the problem. It turned out the clicking went away when I put on my second set of wheels on a ride. That immediately clued me in that is was problem with the rear wheel. I checked it out and discovered I was riding on a broken axle. I replaced it, and voila, problem solved!!

Also, you may need to simply re-lubricate your bb cups (use teflon tape or anti-sieze). An easy job, but I'm not familiar with splined bb spindles, so I cannot say what issues you may have pulling and putting the crankarms back on.

Good Luck!!

Could be the seat tubeKen
Aug 9, 2001 6:42 AM
Try pedaling out of the saddle while going up a good hill. If you don't hear any clicking then I suggest you gease down the seatpost and seat tube. This worked for me.
Aug 9, 2001 7:07 AM
j, I know you said that you are fairly certain that it is coming from the front of the bike. As others have said, it may very well be your BB creaking inside the shell. Another very real possibility is that it is inside your cassette.
To test this, simply change back wheels and see if it happens with the new wheel (if not, then it is most likely your cassette). Remove it and grease every contact point. I've seen this twice in the last few months working at the shop and I only work on weekends. Depending on what kind of cassette and how old it is, all of the gears can be separate, thus every gear-spacer-gear-spacer connection can be the one at fault. Also be sure to grease the free-hub body.
Good luck and keep us posted.
BB is shotmr_spin
Aug 9, 2001 7:22 AM
Same thing happened to me. Once on a road bike. Once on a mountain bike. You didn't say what kind of bike, but we'll assume road. It's harder to deal with a BB yourself on a road bike. On mountain bikes, the whole thing is a cartridge you can easily replace.
Seatpost & Front Der. Cablenova
Aug 9, 2001 7:50 AM
I've had similar situatations over the past couple of years.

I could have sworn that the clicking was coming from the BB. After checking *everything* (or so I thought) myself a couple of times, I took the bike to a couple of different mechanics. Ultimately, it turned out to be the seatpost "clicking" against the inside of the seat tube during hard seated efforts.

Another situation was when I didn't cut the front der. cable short enough, and my right crankarm would hit it on every rotation. I found that problem right away, however.
re: click click front drivetrain somewhere click click clickDrEvilAdam
Aug 9, 2001 8:15 AM
What you're describing sounds exactly like what happened to me a few weeks ago. My bottom bracket was loose and had slid over a few millimeters. Taking it out, lubing is and reinstalling with a torque wrench solved that.

re: click click front drivetrain somewhere click click clickLazy
Aug 9, 2001 4:23 PM
Click! Click! Click! Click! Click!
If it starts when you pedal,
Not derailleurs fault.

BB tool near new.
Used only once on beater.
Get out the torque wrench.

Click! Click! Click! Click! Click!
Can hardly hear myself think.
Must investigate!!!

If you fix the noise.
We'll change your handle for you.
Jeff: wrench-o-matic.
nice. NM (nh)Haiku d'état
Aug 10, 2001 5:24 AM