Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Changed 105-8spdCranks & sprocket to 9spdUltegra FC6500-Can I expect any chain issues

Search
Notices
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.

Changed 105-8spdCranks & sprocket to 9spdUltegra FC6500-Can I expect any chain issues

Thread Tools
 
Search this Thread
 
Old 06-10-06, 11:40 AM
  #1  
Downhill Racer
Thread Starter
 
PhilThee's Avatar
 
Join Date: Jan 2006
Posts: 739

Bikes: 1994 Bridgestone RB1, 2006 Cannondale R1000, 2007 Cannondale Caad9 Optimo2

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Change 105 8spdCranks w/chainrings to 9spdUltegra FC6500 w/chanrings-Any chain issues

Ok here's the deal.
I have 105 8spd cranks---#1056 Double
I am still using the 8spd HG-90 rear cassette out back with both the 8spd deraiileurs and an SRAM PC58 chain.

Can I swap to Ultegra 9spd cranks(#FC 6500 Double) and chainrings without any chain tracking problems?

I was told there may be a problem because the spacing between the chainrings is smaller on the 9spd and may cause a tracking issue there.

The guys at the bike shops have told me there shouldn't be any problems, but I'm just not sure.

I'd like more input on this. I also looked at Shimano's compatibility chart but couldn't find anything on it.
To me that would suggest that they don't want you to do it.

What's up???
__________________
"I didn't see him/her" is a confession, not an excuse.

Last edited by PhilThee; 06-10-06 at 12:54 PM. Reason: incorrect wording in title
PhilThee is offline  
Old 06-10-06, 03:13 PM
  #2  
sch
Senior Member
 
Join Date: May 2003
Location: Mountain Brook. AL
Posts: 4,002
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 303 Post(s)
Likes: 0
Liked 136 Times in 104 Posts
Sounds like a go to me. Should be no problem with the cranks. Chainwheels might have a slightly shorter life span but the difference will be subtle. Tracking difference will be in the mm neighborhood.
Steve
sch is offline  
Old 06-10-06, 06:04 PM
  #3  
Downhill Racer
Thread Starter
 
PhilThee's Avatar
 
Join Date: Jan 2006
Posts: 739

Bikes: 1994 Bridgestone RB1, 2006 Cannondale R1000, 2007 Cannondale Caad9 Optimo2

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Ya know I could get some shim material and cut what I need???

Wonder how much of a difference we are talking about, and which sprocket would need to be spaced???
__________________
"I didn't see him/her" is a confession, not an excuse.
PhilThee is offline  

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.