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 02-12-10, 09:05 PM   #1
akansaskid
Freddin' it
Thread Starter
 
Join Date: Jul 2008
Location: Wichita
Bikes:
Posts: 783
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
FSA/Shimano Chainrings Interchangeable?

Have an FSA Gossamer triple and need a new middle chainring (39T, 130 BCD). Will the 39T, 130 BCD middle chainring from a Shimano 105 or Ultegra set work as well as one from FSA? (Would keep the existing 50T and 30T FSA chainrings on the crank.)

Disappointingly, mine only has about 17,000 miles on it. But, too, more than 90% of the time I'm on the middle ring. I put on the 5th new chain tonight, and the chain slips whenever I pedal a little harder, such as from a stop. Only started slipping today with the new chain. I'd guess it slipped maybe 8 times in the span of 7 miles before I got it back home. I'm thinking the (new) chain wasn't damaged by such a short ride. Thoughts?
akansaskid is offline   Reply With Quote
Old 02-12-10, 09:06 PM   #2
operator
cab horn
 
Join Date: Jun 2004
Location: Toronto
Bikes: 1987 Bianchi Campione
Posts: 28,306
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
As long as the ring is for a triple, it should be fine. The price of the ring over 17k miles is peanuts.
operator is offline   Reply With Quote
Old 02-12-10, 09:10 PM   #3
akansaskid
Freddin' it
Thread Starter
 
Join Date: Jul 2008
Location: Wichita
Bikes:
Posts: 783
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Thanks, Operator.

Price wasn't the issue; local availability was. I'll call the local shops tomorrow to see what they have, but wanted to know if I could use whichever brand (of the two) they had. Now that I know about how long it will last, I can stockpile some for the next maintenance cycles.
akansaskid is offline   Reply With Quote
Old 02-12-10, 10:48 PM   #4
DieselDan
Senior Member
 
DieselDan's Avatar
 
Join Date: Mar 2003
Location: Beaufort, South Carolina, USA and surrounding islands.
Bikes: Cannondale R500, Motobecane Messenger
Posts: 8,521
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Isn't "only 17,000 miles" an understatement?
DieselDan is offline   Reply With Quote
Old 02-13-10, 01:58 AM   #5
Chris_W
Gear Combo Guru
 
Chris_W's Avatar
 
Join Date: May 2007
Location: Switzerland
Bikes: road, commuter/tourer, hardtail MTB, touring tandem, cargo, folder
Posts: 2,253
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Compatibility should be fine. I find Shimano chainrings to shift better than FSA, so if anything shifting from the inner to the middle ring may now improve, and it may even have a longer life than the FSA did (which was already quite fair).
Chris_W is offline   Reply With Quote
Old 02-13-10, 09:45 PM   #6
akansaskid
Freddin' it
Thread Starter
 
Join Date: Jul 2008
Location: Wichita
Bikes:
Posts: 783
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Quote:
Originally Posted by DieselDan View Post
Isn't "only 17,000 miles" an understatement?
This is the first bike I've ridden that far (and this in 13 months), so I really have no experience, except to have read that chainrings "far outlast" cassettes. My first cassette was good for 12,000 miles, so I was hopeful of 20-30K from the chainring. Naive, huh? I will be replacing it routinely now at 12,000 miles, I think.

Would love to know what the "normal range" for a chainring is. Recall I do most of my riding on that middle ring. But if mine lasted an exceptionally long time, it's just more proof I have no power! Even my chains go 4000 miles.

So, again, what's "normal?"

SIDE NOTE: The LBSs in the area have none in stock. As one noted, their average roadie customer might ride 3K in a year. At that rate, it would have taken several years to wear out a chainring, and by then, they've moved on to another bike. It's always special order.
akansaskid is offline   Reply With Quote
Old 02-13-10, 11:55 PM   #7
DArthurBrown
Ovdabak, OR
 
DArthurBrown's Avatar
 
Join Date: Feb 2009
Location: Michigan
Bikes: 2008 Mercier Corvus Steel, 2007 Trek 4300, ~1980 Takara Deluxe 12, 1985 Trek 620 (modernized)
Posts: 495
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by akansaskid View Post
This is the first bike I've ridden that far (and this in 13 months), so I really have no experience, except to have read that chainrings "far outlast" cassettes. My first cassette was good for 12,000 miles, so I was hopeful of 20-30K from the chainring. Naive, huh? I will be replacing it routinely now at 12,000 miles, I think.

Would love to know what the "normal range" for a chainring is. Recall I do most of my riding on that middle ring. But if mine lasted an exceptionally long time, it's just more proof I have no power! Even my chains go 4000 miles.

So, again, what's "normal?"

SIDE NOTE: The LBSs in the area have none in stock. As one noted, their average roadie customer might ride 3K in a year. At that rate, it would have taken several years to wear out a chainring, and by then, they've moved on to another bike. It's always special order.
The lifetime of your chainrings and cassettes greatly depends on your riding style. I mash the pedals more than I should. Both my cassette and large chainring are pretty worn (but still fully functional) after about 7500 miles. My chain has very little wear. Go figure.
DArthurBrown is offline   Reply With Quote
Old 02-14-10, 09:22 AM   #8
Wanderer
aka Phil Jungels
 
Wanderer's Avatar
 
Join Date: Apr 2005
Location: North Aurora, IL
Bikes: 08 Specialized Crosstrail Sport, 05 Sirrus Comp
Posts: 7,594
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Riding on the middle ring a lot, do you sometimes find yourself wanting to go to the big one? Just need a smidgen of a higher gear than the one you are in?

Consider a 40 for the middle.

I've often thought a 50-40-30 would be an ideal mix.
Wanderer 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 03:20 AM.