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 04-19-06, 09:42 PM   #1
rat_factory
= cyclist's tan
Thread Starter
 
rat_factory's Avatar
 
Join Date: Jun 2005
Location: the big D in the big T
Bikes: '82 Miyata 310, '87 Scott Boulder, '87 Schwinn Le Tour, '91 Cannondale SM500, '96 Schwinn Clear Creek, '99 Schwinn MesaGS, '05 Rockhopper
Posts: 297
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chain rust/wear/cleaning

okay first let me say that this is my chain. i bought this 85? miyata 310 off a guy who said it had been in his garage for the past couple years, but it was ~$1200 new (can't remember exact amount). anyways here are some pics of the chain, freshly cleaned chainrings, and dirty freewheel:

wait, before you post that my chain is toast, in general how can one remove rust from an old chain?


cleaned chainrings


uncleaned freewheel


chain length
rat_factory is offline   Reply With Quote
Old 04-20-06, 05:20 AM   #2
mactheknife68
Always find my way home
 
Join Date: Dec 2005
Location: Kankakee, IL
Bikes: Madone, 8500
Posts: 190
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Ive salvaged worse chains than this with solvent, a stiff wire brush and alot of elbow grease fueled by Guiness(for stength!). Cant do much for stretched chain tho.
mactheknife68 is offline   Reply With Quote
Old 04-20-06, 07:11 AM   #3
San Rensho 
Senior Member
 
Join Date: Oct 2005
Bikes:
Posts: 5,548
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
A new chain for that bike is what? 5-8 bucks. Just get a new chain, that will extend the life of your entire drive train in the long run.
__________________
Il faut de l'audace, encore de l'audace, toujours de l'audace

1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1
San Rensho is offline   Reply With Quote
Old 04-20-06, 08:00 AM   #4
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,918
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 95 Post(s)
It's really hard to tell from the photo but it seems the freewheel cogs are in very good condition so a new chain should mate with them wthout problems.

As recommended, get a new chain. The work involved in cleaning up the old one isn't worth it and chains, particularly pre 9-speed, are cheap.
HillRider is offline   Reply With Quote
Old 04-20-06, 08:07 AM   #5
2manybikes
Dog is my co-pilot
 
2manybikes's Avatar
 
Join Date: Jun 2003
Bikes: 2 many
Posts: 15,630
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 81 Post(s)
Yes chains are cheap. Also riding and shifting knocks a lot of the rust off.
2manybikes is offline   Reply With Quote
Old 04-20-06, 09:27 AM   #6
rat_factory
= cyclist's tan
Thread Starter
 
rat_factory's Avatar
 
Join Date: Jun 2005
Location: the big D in the big T
Bikes: '82 Miyata 310, '87 Scott Boulder, '87 Schwinn Le Tour, '91 Cannondale SM500, '96 Schwinn Clear Creek, '99 Schwinn MesaGS, '05 Rockhopper
Posts: 297
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
man what was i thinking. i should just buy a new 6 speed hg chain. i scrubbed the damn thing for half and hour and realized i was ******** to try and use a chain streched 1/2 an inch. the real thing i was worried about was the new chain wearing the old cogs and chainrings unevenly. thanks

Last edited by rat_factory; 04-20-06 at 09:32 AM.
rat_factory is offline   Reply With Quote
Old 04-20-06, 02:16 PM   #7
d_D
645f44
 
d_D's Avatar
 
Join Date: Sep 2003
Location: Oxford, Uk
Bikes:
Posts: 482
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If it's been sat in a garage the chain should be fine. The chain lube should have kept the chain internals free from rust. Surface rust on the outer surfaces is mostly cosmetic. Any rust at contact points will quickly get removed.

It's really hard to see if the chain is streched or not in the photo. You need to measure from rivet centre to rivet centre not from the end of the plate. The chainrings and freewheel have very little wear. Usually there is visible wear to the teeth if used with a stretched chain.

I'd measure the chain correctly and if it is stretched replace it. If it isn't stretched just do your nomal lube procedure and ride.
d_D is offline   Reply With Quote
Old 04-20-06, 04:33 PM   #8
Vatn
Sceptical European
 
Join Date: Sep 2005
Location: Norway
Bikes:
Posts: 51
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The way that ruler is placed, it's easiest to measure from the 1/2" mark (the start of one plate) to the 12 1/2" mark (where you should find the start of another plate). You'll then see that the chain is only 1/16" or so longer than a new one.
Vatn is offline   Reply With Quote
Old 04-20-06, 08:55 PM   #9
roccobike
Bike Junkie
 
roccobike's Avatar
 
Join Date: Jun 2005
Location: South of Raleigh, North of New Hill, East of Harris Lake, NC
Bikes: Specialized Tarmac, Speialized Roubaix, Giant OCR-C, Specialized Stumpjumper FSR, Stumpjumper Comp, 88 & 92Nishiki Ariel, 01 Bianchi Campione, 87 Centurion Ironman, 92 Paramount
Posts: 9,445
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Whenever I measure a chain, I measure it while it is mounted. I've recovered chains that had some mild, not deep, rust by first cleaning in Clorox bleach, then rinse and place immediatley in Simple Green then back to bleach then finally simple green followed by a thorough rinse. Wipe the chain, then place lube on the chain surfaces to prevent rusting when the remaining water evaporates. BUT, if the chain still shows rust, then the rust is too deep. Even if the visible rust is removed by riding with the chain in place, I would be concerned that the metal surfaces are scored and may damage the cassette. Looking at the chain in question, I would probably just replace it.
__________________
Roccobike BF Official Thread Terminator
roccobike 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 07:11 AM.