Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Clydesdales/Athenas (200+ lb / 91+ kg) Looking to lose that spare tire? Ideal weight 200+? Frustrated being a large cyclist in a sport geared for the ultra-light? Learn about the bikes and parts that can take the abuse of a heavier cyclist, how to keep your body going while losing the weight, and get support from others who've been successful.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 11-10-11, 06:55 PM   #1
ahultin
Senior Member
Thread Starter
 
ahultin's Avatar
 
Join Date: May 2007
Location: Bonsall, Ca
Bikes: 2003 Cannondale Jekyll 1000, 2014 Fuji Finest 1.5 (wife), 2008 Fuji Finest 1.0 (Daughter), 2012 Fuji Cross 2.0 (son), 2011 Cannondale Road Tandem 2
Posts: 525
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Chain Life

Just got back from a trip to the LBS to have my rear derailleur adjusted as it was skipping on the 11 tooth rear. They tell me my chain is at .9% stretch and near end of life. The chain is a whippermann connex and was put on new May 12. I will have to go though mileage but would estimate about 1500 on the chain. Is this normal wear or should I go to a different chain? This is my fourth chain on this bike, previous two where ultegra chains that actually broke (put a new cassette with this one)
ahultin is offline   Reply With Quote
Old 11-10-11, 10:01 PM   #2
JavaMan
Senior Member
 
JavaMan's Avatar
 
Join Date: Sep 2004
Location: Southern California
Bikes: 2013 KHS Flite 747
Posts: 1,068
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Not sure what .9% stretch means. The usual way to determine when to replace a chain is to measure 12 links with the chain under slight tension. It should be 12 inches exactly. If longer by 1/16 inch, replace it. But that works out to .52%.

A "stretch" of .9% would be .108 inch, a hell-of-a-lot for 1500 miles. BTW, I get about 5,000 miles out of an Ultegra chain (riding on the road in mostly dry weather, lubing every 100 miles).
JavaMan is offline   Reply With Quote
Old 11-10-11, 10:26 PM   #3
Mr. Beanz
Banned.
 
Mr. Beanz's Avatar
 
Join Date: Dec 2005
Location: Upland Ca
Bikes: Lemond Chambery/Cannondale R-900/Trek 8000 MTB/Burley Duet tandem
Posts: 20,030
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
This link explains the 1% stuff

http://pardo.net/bike/pic/fail-004/000.html

park tool that checks this stuff.

gauge and video

http://www.parktool.com/product/chain-checker-cc-2
Mr. Beanz is offline   Reply With Quote
Old 11-11-11, 10:44 AM   #4
pdlamb
Senior Member
 
Join Date: Dec 2010
Location: northern Deep South
Bikes: Fuji Touring, Novara Randonee
Posts: 2,942
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 135 Post(s)
The answer to how long a chain will last is, "It depends." Some people get ungodly long life, some people kill a chain in 500 miles (usually riding in a lot of mud). 1,500 isn't unreasonably low, but you might want to check with a ruler. I'd suggest you replace it soon, so your cassette doesn't need to be replaced as well.

For reference, mine are usually good for 2,000-2,500 miles on hilly roads with occasional rain.

A bike chain is a consumable, like tires, so I like to buy cheap ones.
pdlamb is offline   Reply With Quote
Old 11-11-11, 11:08 AM   #5
Seattle Forrest
Senior Member
 
Seattle Forrest's Avatar
 
Join Date: Mar 2010
Location: Seattle, WA
Bikes:
Posts: 14,587
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 1497 Post(s)
1,500 miles seems a little young, but not that much. I tend to get 2,000 to 2,500 miles out of a chain.

I'd replace it if there's any question, because chains are less expensive than cassettes (if you run Ultegra) and, in the long term, chain rings.
Seattle Forrest is offline   Reply With Quote
Old 11-11-11, 12:54 PM   #6
CliftonGK1
Senior Member
 
CliftonGK1's Avatar
 
Join Date: Jul 2006
Location: Columbus, OH
Bikes: '08 Surly Cross-Check, 2011 Redline Conquest Pro, 2012 Spesh FSR Comp EVO, 2015 Trek Domane 6.2 disc
Posts: 11,380
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
On my commuter bike I get insane life out of a chain, but it's an 1/8" singlespeed drivetrain. Built for a beatdown.

My CX bike is the same setup, but due to CX race conditions (lots of stompy sprints, sand, mud, crashing in a big heap of bicycles) the race chain will last a single season.
__________________
"I feel like my world was classier before I found cyclocross."
- Mandi M.
CliftonGK1 is offline   Reply With Quote
Old 11-11-11, 01:14 PM   #7
Nightshade
Humvee of bikes =Worksman
 
Nightshade's Avatar
 
Join Date: May 2004
Bikes:
Posts: 5,363
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Any chain will last "almost forever" if it is enclosed in an oil bath chain guard.

That said, just enclosing the chain will double it's useful life.
__________________
My preferred bicycle brand is.......WORKSMAN CYCLES
I dislike clipless pedals on any city bike since I feel they are unsafe.

Originally Posted by krazygluon
Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred, which one would you rather have under your butt at 30mph?
Nightshade is offline   Reply With Quote
Old 11-11-11, 03:40 PM   #8
pbd
Senior Member
 
Join Date: Dec 2010
Bikes:
Posts: 357
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
What lubrication are you using? Applying regularly? Do you mash, or spin? Climb hills or do much out-of-saddle work? Ride in bad conditions like wet/mud? All these things affect chain life.

1500 isn't shockingly low, but it's not great either. My current SRAM chain is it 1473 miles, and is somewhere less than .75% "stretched". I don't know the exact number, because I use this little chain checker that is simply a pass/fail test at .75%. But I'm definitely a spinner, not a masher, this bike has never even seen rain, much less ridden in it, and never any other bad conditions. I'm also pretty religious about cleaning and lubricating.




If the checker fits between links then the "stretch" is more than .75%, if it doesn't go in then it is less than .75%, and that's the threshold at which I replace the chain.

Last edited by pbd; 11-11-11 at 03:46 PM.
pbd is offline   Reply With Quote
Old 11-11-11, 03:41 PM   #9
Seattle Forrest
Senior Member
 
Seattle Forrest's Avatar
 
Join Date: Mar 2010
Location: Seattle, WA
Bikes:
Posts: 14,587
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 1497 Post(s)
Why do you use a chain checker tool over a ruler, pbd? Convenience, or something else?
Seattle Forrest is offline   Reply With Quote
Old 11-11-11, 03:49 PM   #10
pbd
Senior Member
 
Join Date: Dec 2010
Bikes:
Posts: 357
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by Seattle Forrest View Post
Why do you use a chain checker tool over a ruler, pbd? Convenience, or something else?
It's convenient, very quick. Literally just put it on, there's no reading it or anything. Hook it on one pin, if it falls in then it's time to change, if it doesn't fall in then it's good to go. Takes literally 5 seconds, no tape measure required, I keep the little checker next to the bottle of chain lube with all the other frequently-used tools.

A tape measure works just as well, but the little checker tool is just so darn convenient.
pbd is offline   Reply With Quote
Old 11-11-11, 09:17 PM   #11
ahultin
Senior Member
Thread Starter
 
ahultin's Avatar
 
Join Date: May 2007
Location: Bonsall, Ca
Bikes: 2003 Cannondale Jekyll 1000, 2014 Fuji Finest 1.5 (wife), 2008 Fuji Finest 1.0 (Daughter), 2012 Fuji Cross 2.0 (son), 2011 Cannondale Road Tandem 2
Posts: 525
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
I lube and clean it a least weekly. Lube with Tri-flow.

I do ride in the rain on occasion which with this particular chain has been once (last sunday) But I also ride fairly early and near the coast so there is quite a bit of moisture (marine layer etc)

I believe I am considered a masher (average cadence is 75-85)

This chains life has been about 50% of the mileage climbs
ahultin is offline   Reply With Quote
Old 11-17-11, 02:16 PM   #12
Pinyon
Senior Member
 
Pinyon's Avatar
 
Join Date: Jul 2007
Location: Northern Colorado
Bikes:
Posts: 1,380
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I use a ruler.

Be careful if you have a rear derailure. I keep my chain so well-lubed and clean, that if I don't watch it, by the time I notice that it needs changing, I also need to replace the rear cassette. That is an extra $25 - $45, depending on how many gears you have in back (7-8 speed cassettes are cheaper than 9-10 speed ones here).
Pinyon is offline   Reply With Quote
Old 11-21-11, 11:38 AM   #13
Drew Eckhardt
Senior Member
 
Drew Eckhardt's Avatar
 
Join Date: Apr 2010
Location: Sunnyvale, CA USA
Bikes:
Posts: 5,191
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Quote:
Originally Posted by ahultin View Post
Just got back from a trip to the LBS to have my rear derailleur adjusted as it was skipping on the 11 tooth rear. They tell me my chain is at .9% stretch and near end of life.
Measure it yourself with a ruler.

Put some tension on the chain, measure between pins that should be 12" across, and don't worry unless you get to 12 1/16" (0.5%) because the pitch change causes the chain to ride higher up on the cogs + rings and wears them out too.

Your shop could be using a chain checker which is both convenient and increases chain sales - most (Shimano's measures pitch, but nearly all the rest don't) measure the total between rollers which includes designed-in clearances (even new chains are not 0%) and roller wear which won't affect pitch.

Replace at 0.5% or when you don't like how crisp the chain shifts.

Quote:
The chain is a whippermann connex and was put on new May 12. I will have to go though mileage but would estimate about 1500 on the chain. Is this normal wear or should I go to a different chain?
I have 3500 miles on my current Campagnolo Record C9 chain and can't yet measure 1/32" of wear (0.26%) although shifting has degraded some from side-wear. Other lesser chains would be shot at this point.

Quote:
This is my fourth chain on this bike, previous two where ultegra chains that actually broke (put a new cassette with this one)
Did the shop install the chains? They may have tried to rivet them instead of using the special non-reusable pins.

Last edited by Drew Eckhardt; 11-21-11 at 11:44 AM.
Drew Eckhardt is offline   Reply With Quote
Old 11-21-11, 06:03 PM   #14
Drew Eckhardt
Senior Member
 
Drew Eckhardt's Avatar
 
Join Date: Apr 2010
Location: Sunnyvale, CA USA
Bikes:
Posts: 5,191
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Quote:
Originally Posted by pbd View Post

If the checker fits between links then the "stretch" is more than .75%, if it doesn't go in then it is less than .75%, and that's the threshold at which I replace the chain.
Since the checker goes between rollers it's measuring the total of "stretch" (changes pitch and wears out cogs) + the manufacturer's roller size (may be > 0% on a brand new chain and has no impact) manufactured clearances (same) + roller wear (no impact)

The two ways to be accurate are

1) With a Shimano's TL-CN41 tool ($60-$80 depending on source)
2) With a ruler (I doubt I paid $6 for my nice stainless steel ruler with convenient 1/32" marks)

http://pardo.net/bike/pic/fail-004/000.html

http://www.greentirebikes.com/62634.html

Last edited by Drew Eckhardt; 11-21-11 at 06:06 PM.
Drew Eckhardt is offline   Reply With Quote
Old 11-25-11, 07:53 PM   #15
ahultin
Senior Member
Thread Starter
 
ahultin's Avatar
 
Join Date: May 2007
Location: Bonsall, Ca
Bikes: 2003 Cannondale Jekyll 1000, 2014 Fuji Finest 1.5 (wife), 2008 Fuji Finest 1.0 (Daughter), 2012 Fuji Cross 2.0 (son), 2011 Cannondale Road Tandem 2
Posts: 525
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Finally figured out the problem. Checked the chain with a ruler (several actually) and the chain doesn't even show 1/32 wear. Since the problem was skipping on the 11 tooth I have just been staying out of it.
Had a little time tonight to research and determined that the connex link installed with the chain (by the LBS) was installed backwards!
http://www.velimpex.com/wippermann/connex-link.htm
Cleaned it, lubed it and reinstalled the connex link right and now all is right and well with the world
ahultin is offline   Reply With Quote
Old 11-25-11, 08:26 PM   #16
JusticeZero
Rider
 
Join Date: Oct 2007
Location: New Orleans, LA
Bikes:
Posts: 1,077
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yeah, '.9%' seemed like a pretty odd number, and then you mentioned that they helpfully offered to sell you a new chain and shop time.. Time for a new LBS.
JusticeZero is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 01:20 PM.