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Caad 10 5 owners, do me a favor please.

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Caad 10 5 owners, do me a favor please.

Old 02-15-12, 10:28 PM
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The_DK
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Caad 10 5 owners, do me a favor please.

Throw it in a stand, and shift to small front, middle back. Note the amount of noise when you turn the crank at a moderate cadence.

Now shift to the big front ring (I've got a 50/34, so if you do, all the better.)

How much nosier is it? Aside from the noise being 'faster' would you say it's significantly louder? Does there seem to be a racket coming from the rear (or possibly the front) derailleur?

On the road this would represent the bike going from "sewing machine" sound to "magic bullet with a nickel in it" sound.

Last edited by The_DK; 02-15-12 at 10:41 PM.
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Old 02-15-12, 10:35 PM
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I had a 9-5 with 105 and the 50/34 for a couple years. I never noticed anything like that. It was all the same to me.
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Old 02-15-12, 10:42 PM
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You'll get tons of CAAD10 owners on the "Cult of CAAD" link in my signature. Try there.
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Old 02-15-12, 10:44 PM
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What the hell does "magic bullet with a nickel in it" mean?
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Old 02-15-12, 10:49 PM
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Originally Posted by ilovecycling View Post
What the hell does "magic bullet with a nickel in it" mean?
It's a type of small blender. I mean that the sound gets very loud/clicky.
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Old 02-15-12, 10:51 PM
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What cassette does it have? I have a 9-4 and upgraded to an ultegra cassette and when clean it's darn near silent across the range and when dirty just a bit noisy.
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Old 02-15-12, 10:56 PM
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It has the 105/5700 12-27 10 speed cassette.

It makes an awful racket in 50/12, but as far as I can tell, the chain isn't touching anything but cogs.
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Old 02-15-12, 10:57 PM
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adjust your rear derailleur cable. May need to be tightened a turn, may need to be loosened a turn. I'd bet one of those will fix your issue. What frame you have isn't a factor here.
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Old 02-15-12, 10:58 PM
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Originally Posted by weaver View Post
adjust your rear derailleur cable. May need to be tightened a turn, may need to be loosened a turn. I'd bet one of those will fix your issue. What frame you have isn't a factor here.

Oh, it's been adjusted top to bottom, just about everything has.

I suppose a much better question would have been "Shimano 105 + 50/34" owners.
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Old 02-15-12, 11:00 PM
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Originally Posted by bikerjp View Post
What cassette does it have? I have a 9-4 and upgraded to an ultegra cassette and when clean it's darn near silent across the range and when dirty just a bit noisy.

I'd have to concur with bikerjp. With a 105 drive train, you should be able to have it running just about silent.

Something's wrong - is the chain rubbing against the sides of the front derailleur? If you just bought the bike recently, new bikes can experience cable stretch and need some fine tuning to get shifting back in line. I'd take it back to the shop where you got it and see what they think.
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Old 02-15-12, 11:04 PM
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nope, no front derailleur contact whatsoever. It's just rattly. I'll probably give them another chance to fix it. I want to make sure I'm not chasing a non-issue.
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Old 02-16-12, 12:14 AM
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How old is your chain? If it's not FD or RD adjustment, then I'd clean/lube the chain. If no joy, then consider a new chain. I couldn't believe how much quieter my drivetrain became when I switched from SRAM1071 to KMC X10SL
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Old 02-16-12, 12:21 AM
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Originally Posted by Beaker View Post
How old is your chain? If it's not FD or RD adjustment, then I'd clean/lube the chain. If no joy, then consider a new chain. I couldn't believe how much quieter my drivetrain became when I switched from SRAM1071 to KMC X10SL

That's really good to hear since I'm about to go from a
Dura-Ace 7801 to a KMC X10SL DLC Black tomorrow.

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Old 02-16-12, 12:23 AM
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Seriously,it was like a whole drivetrain upgrade. Then again I've come to view the SRAM1071 chain as a piece of junk, so may be less of a jump from 7801.
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Old 02-16-12, 12:31 AM
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Originally Posted by Beaker View Post
Seriously,it was like a whole drivetrain upgrade. Then again I've come to view the SRAM1071 chain as a piece of junk, so may be less of a jump from 7801.
Yeah, DA chains are good. No doubt, but I've heard good things from the X10SL's from others.
It's always pleasant to hear it again and again. With the DA coming in at 280g, I'm looking for
a 25-40g drop in my drivetrain. Not much, but added to the other upgrades I'm making this week,
it'll contribute to a 375g drop in total.

DK,

Lube your hub if you haven't already and check that the axles are sitting right in the dropouts.
What skewers are you using? If they are aftermarket lightweights, they may have you misaligned.
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Old 02-16-12, 06:59 AM
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I actually have two wheelsets, they don't really change the noise any. I'm using the skewers that came with it.

The whole thing has about 50 miles on it maybe. Chain and all. Lubing the chain seems to help a tiny amount for a few miles. MAYBE.

The noise is loudest from the pulleys on the rear derailleur, and second loudest from the crankset. That chain is touching absolutely nothing but cogs though. And the rear derailleur lays the chain down perfectly square with the rear cogs.

It's nice and quiet on the 34 ring up front! Just weirdness.


On the bright side, derailleur adjustment has gone from black magic to 'duh' for me over the course of trying to fix it myself.



Or maybe it's just a defective chain? Does that happen?

Last edited by The_DK; 02-16-12 at 07:06 AM.
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Old 02-16-12, 07:11 AM
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If the noise exists on the big ring only and not on the small ring, then you found your problem. Its your front derailleur adjustment.
Your derailleur maybe too outboard and scraping on the inboard crank arm when shifted fully outboard onto the big ring.
First step is...tighten the outboard stop...look for a score line in the inside of your drive side crank arm where it would intersect with the front derailleur outer cage.
If that doesn't solve it...remove the front derailleur completely and with the bike on the stand and on the big ring...rotate the cranks.
Its your front derailleur adjustment.
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Old 02-16-12, 07:33 AM
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Could this be a BB30 issue? Sounds like as you rise in gears (subsequently applying more force) you are getting more noise. Seems like the BB is a likely culprit.
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Old 02-16-12, 07:42 AM
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Originally Posted by jwill87ta View Post
Could this be a BB30 issue? Sounds like as you rise in gears (subsequently applying more force) you are getting more noise. Seems like the BB is a likely culprit.
Unlikely. Yes load maybe incrementally different from small to big ring, but I bet his front derailleur is misadjusted and rubbing on his crank arm.
Also chain rub on FD's isn't always easy to see and when they rub, they make a fair amount on noise.
I just built up a Roubaix Pro and it took me 3 rides to dial in the FD...and I have been at this for more years than I care to admit. I had big ring rub issue when in the largest cogs in back and running slightly cross chained and it took a while before I could get all gear combos to play nice with one another which I eventually did.
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Old 02-16-12, 07:47 AM
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Originally Posted by jwill87ta View Post
Could this be a BB30 issue? Sounds like as you rise in gears (subsequently applying more force) you are getting more noise. Seems like the BB is a likely culprit.
No, the OP says that this happens on a work stand with the wheel in the air. The "BB30 creak" usually happens under hard, standing effort, not something that you're going to replicate spinning the cranks with your hand. Let's not blame every drivetrain issue on BB30.
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Old 02-16-12, 08:18 AM
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You know, hitting the crank arm wasn't even on my radar as a possible problem. I'll check it out when I get home tonight.

Of course if that is the case, moving it in will cause the chain to rub against it instead.
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Old 02-16-12, 09:09 AM
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Originally Posted by The_DK View Post
It has the 105/5700 12-27 10 speed cassette.

It makes an awful racket in 50/12, but as far as I can tell, the chain isn't touching anything but cogs.
Originally Posted by The_DK View Post
nope, no front derailleur contact whatsoever. It's just rattly. I'll probably give them another chance to fix it. I want to make sure I'm not chasing a non-issue.
Originally Posted by Beaker View Post
....consider a new chain. I couldn't believe how much quieter my drivetrain became when I switched from SRAM1071 to KMC X10SL
I've got a 53/39, and even after 1K miles I've never found my drivetrain to be excessively smooth or quiet. I see a new chain in my future...
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Old 02-16-12, 09:57 AM
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Originally Posted by The_DK View Post
You know, hitting the crank arm wasn't even on my radar as a possible problem. I'll check it out when I get home tonight.

Of course if that is the case, moving it in will cause the chain to rub against it instead.
It isn't on many people's radar and why I mentioned it as a possible root cause. It has happened to me and a common mistaken.
And no...moving it inboard won't necessarily create rubbing condition either. A couple of tenths of a mm can mean the difference between a silent versus rattley front derailleur.
Two more common mistakes are:
Derailleur should only be 1mm from the outer ring tooth. If you have a std sized derailleur and not a compact FD, then you won't have good agreement with the outer tooth profile. You need to check to see if your FD is compatible with both size chainrings...53 and 50.
Second issue is from top view, cage needs to alignn with crank teeth. If the cage is skewed, this will make adjustment a lot harder.
Generally a bit of tuning for all the above is necessary. Adjusting a FD for all cross chain combinations including trimming the FD requires some skill.
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Old 02-16-12, 07:09 PM
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The crank arm is a mile from the derailleur. Nuts.

Maybe the chain is just defective?
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Old 02-16-12, 07:46 PM
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I'm still convinced it's your rear derailleur pulleys making the ruckus as the derailleur may be adjust good enough to shift well, but it can still make that loose skipping teeth lightly noise that you describe as a nickel in a magic bullet if it's not adjusted nuts on. I deal with that every once in a while after new cables stretch a bit and adjustment gets off a little. I just pedal the bike on the stand while tightening or loosening the adjuster until the noise goes away.

Beyond that the only other thing could be a stiff link in your chain. Don't go replacing a 50 mile old chain before ruling it out. Check for a link that doesn't pivot, that'll cause a ruckus when it hits the pulleys too.

I think you're fine on the front derailleur. If the chain was hitting the cage it would be a consistent scraping noise, not the noise you're describing. And you could simply look down and see if they are contacting, which is pretty unlikely anyways if this noise is going on in the middle of the cassette, i.e. good chain line which would run the chain roughly centered in the FD cage.
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