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


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-06-05, 01:38 PM   #1
popi
Newbie
Thread Starter
 
Join Date: Apr 2005
Bikes:
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
chains and cassettes

Hi there , I am have a few problems with the drive on my old mtb , It's like this my chain snaped so ,i got a new one then it started slipping on my front chain rings so i bought some new chain rings , this part now works fine but now it slips on the rear casette well some cogs work ok but most slip, i would buy a new cassette but the one i am useing is only 6 month old (done about 200 mile),?
is it to worn for my new chain? or is they some way arund this.
popi is offline   Reply With Quote
Old 04-06-05, 01:45 PM   #2
Doctor Morbius
Interocitor Command
 
Doctor Morbius's Avatar
 
Join Date: Oct 2003
Location: The adult video section
Bikes: Endurance Road, Road, Hybrid, Sport MTB
Posts: 1,881
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Quote:
Originally Posted by popi
Hi there , I am have a few problems with the drive on my old mtb , It's like this my chain snaped so ,i got a new one then it started slipping on my front chain rings so i bought some new chain rings , this part now works fine but now it slips on the rear casette well some cogs work ok but most slip, i would buy a new cassette but the one i am useing is only 6 month old (done about 200 mile),?
is it to worn for my new chain? or is they some way arund this.
That's becuase you ran an old worn chain and it wore out your new cassette. It doesn't take long. Nothing will damage a drivetrain like a worn stretched chain.
Doctor Morbius is offline   Reply With Quote
Old 04-06-05, 10:42 PM   #3
djcolorado
DJColorado
 
Join Date: Nov 2004
Location: Loveland, Colorado
Bikes: Rockhopper Comp, GT Avalanche, Specialized Sequoia & Crossroads
Posts: 53
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The conventional wisdom is to replace chainrings, chain, and cassette at the same time. I had a reason to replace the cassette and tried to get away with that being the only change. For various reasons I ended up replacing first the chain and then the chainrings. In this case, conventional wisdom rules.
djcolorado is offline   Reply With Quote
Old 04-07-05, 01:46 AM   #4
popi
Newbie
Thread Starter
 
Join Date: Apr 2005
Bikes:
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for the help, so if i don't get i new cassette i will wreck my new chain? ,it seems like a waste of a cassette as my old one lasted years , but i will listen to your advice and get a new one, thanks again,
popi is offline   Reply With Quote
Old 04-07-05, 02:26 AM   #5
Doctor Morbius
Interocitor Command
 
Doctor Morbius's Avatar
 
Join Date: Oct 2003
Location: The adult video section
Bikes: Endurance Road, Road, Hybrid, Sport MTB
Posts: 1,881
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Quote:
Originally Posted by popi
Thanks for the help, so if i don't get i new cassette i will wreck my new chain? ,it seems like a waste of a cassette as my old one lasted years , but i will listen to your advice and get a new one, thanks again,
A worn cassette will wear a new chain but it's not as pronounced as a worn chain wearing a new cassette. Now you have to contend with the thought that you may have trashed your front chainrings as well.

Worn chains are a no-no! There is no need to keep them too long or try and squeeze thousands of miles out of them as they are an inexpensive commodity item. Get an inexpensive chain checker such as the Park CC-3 and toss them when they reach 0.75%. That's what Lennard Zinn does so it's good enough for me.

http://www.nashbar.com/profile_morei...u=11164&brand=

Many people keep them on until they read 1.0% but I personally wouldn't. I have quite a bit of equipment (different wheels and cassettes) that I like to swap around so I just toss the chains at 0.75%. I'm not worried about getting that extra dollar's worth of wear out of them.
Doctor Morbius is offline   Reply With Quote
Old 04-07-05, 08:10 AM   #6
dfrancefort
Junior Member
 
Join Date: Oct 2004
Bikes:
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You should replace the cassette when you replace the chain rings and always put on a new chain!
dfrancefort is offline   Reply With Quote
Old 04-07-05, 08:59 AM   #7
powers2b
Listen to me
 
powers2b's Avatar
 
Join Date: Nov 2004
Location: Lexus Texas
Bikes:
Posts: 2,789
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I just worked on a bike like that last night.
The slipping only occured in one gear.
When I looked closely at the cog it had burrs on the side of the teeth - an obvious sign of wear.
Ended up replacing the cogset
Some good tips posted here.
You will need to replace the cogset.
and monitor your chain wear to prevent future occurances.
12-1/16 inches over 12 links = buy new chain.

Enjoy
powers2b is offline   Reply With Quote
Old 04-07-05, 12:34 PM   #8
popi
Newbie
Thread Starter
 
Join Date: Apr 2005
Bikes:
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
"Ma y have trashed the chain rings" AAAAARRRRRRRRRRRRRRGGGGGGGGGGGGHHHHHHHH NO NO NO
Hope not anyway , i have been about 3 maybe 4 mile on my old cassette new chain and rings ,now please tell me that this only a little way my tough new chain rings can hack it.
popi is offline   Reply With Quote
Old 04-07-05, 12:47 PM   #9
popi
Newbie
Thread Starter
 
Join Date: Apr 2005
Bikes:
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Just found a half price xtr Ti cassette , if i get it will it be ok to run on my sram chain ??? thanks in advance.
popi is offline   Reply With Quote
Old 04-07-05, 01:01 PM   #10
Doctor Morbius
Interocitor Command
 
Doctor Morbius's Avatar
 
Join Date: Oct 2003
Location: The adult video section
Bikes: Endurance Road, Road, Hybrid, Sport MTB
Posts: 1,881
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Quote:
Originally Posted by popi
"Ma y have trashed the chain rings" AAAAARRRRRRRRRRRRRRGGGGGGGGGGGGHHHHHHHH NO NO NO
Hope not anyway , i have been about 3 maybe 4 mile on my old cassette new chain and rings ,now please tell me that this only a little way my tough new chain rings can hack it.
Popi, unfortunately there just isn't any way to tell from where I'm sitting. All 3 of your drivetrain components (chain, cassette, chainrings) wear at the same time. If any one of them is worn enough it will damage the rest of the drivetrain. If you use an old worn chain with a new cassette the cassette can be damaged.

Now here's the conjecture ... knowing that you let your chain stretch enough to ruin your old cassette it may have very well worn your chainrings as well. There's no way to tell without 1) close inspection looking for any shark's toothing, and 2) riding the bike and supplying sufficient force to see if the chain skips.

Time for you to do some schooling now as I'm moving on ...

http://draco.acs.uci.edu/rbfaq/FAQ/8d.2.html

http://www.parktool.com/repair_help/...ex.shtml#chain

http://sheldonbrown.com/chains.html

http://www.insidetriathlon.com/train...es/2587.0.html

http://www.insidetriathlon.com/train...es/2384.0.html

http://www.insidetriathlon.com/train...es/2067.0.html

http://www.insidetriathlon.com/train...es/2006.0.html

http://www.insidetriathlon.com/train...es/2470.0.html
Doctor Morbius is offline   Reply With Quote
Old 04-07-05, 01:03 PM   #11
Doctor Morbius
Interocitor Command
 
Doctor Morbius's Avatar
 
Join Date: Oct 2003
Location: The adult video section
Bikes: Endurance Road, Road, Hybrid, Sport MTB
Posts: 1,881
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Quote:
Originally Posted by dfrancefort
You should replace the cassette when you replace the chain rings and always put on a new chain!
There are no set formulae for replacing any of these components. Items only need to be replaced if they are worn or damaged.
Doctor Morbius is offline   Reply With Quote
Old 04-07-05, 01:16 PM   #12
powers2b
Listen to me
 
powers2b's Avatar
 
Join Date: Nov 2004
Location: Lexus Texas
Bikes:
Posts: 2,789
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Just out of morbid curiosity what is the measurement of your chain?
With the chain on the bike and under tension, what is the distance across 12 links (pin center to pin center)??

Enjoy
powers2b is offline   Reply With Quote
Old 04-07-05, 02:17 PM   #13
Al1943
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
nmnmnmnm

Last edited by Al1943; 04-08-05 at 01:41 PM.
Al1943 is offline   Reply With Quote
Old 04-07-05, 02:30 PM   #14
powers2b
Listen to me
 
powers2b's Avatar
 
Join Date: Nov 2004
Location: Lexus Texas
Bikes:
Posts: 2,789
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Al1943
I'm wondering if the whole problem could be fixed with an adjustment of the rear derailleur cable tension.
You mean the brake cable tension adjustment don't you??

Yea, I hadn't thought of that.....

Enjoy
powers2b 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 05:08 PM.