Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take Part in the March Giveaway: Coming Soon


Sram/ultegra compatability
#1
My bike is a Specialized Roubaix with 105 triple components (2007). Because the frame cracked Specialized is replacing my frame with a SL3 pro. I would like to upgrade some components; Sram apex 11-32 cassette, Ultegra 6700 compact crank 50-34, and Ultegra BR-6700 brakes. Will these parts be compatible and what else would I need to change when I transfer my parts to the new frame. Thanks, Michael
  Reply
#2
Just make sure the brakes have the proper reach specs, you may want to replace the chain, and you may need to change the spindle/bottom bracket
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
  Reply
#3
105 rear derailleur should not take a 11-32 cassette, because the largest sprocket you can put on is a 27 or 28

Is your bike have some external BB bearings like theses??

http://www.bikepedia.com/Images/image2.aspx?w=300&h=300&filename=BBST2320.jpg&f=Hawley

I can help you further if you can check on your rear and front derailleur for the model ##, it should be RD-XXX and FD-XXX
  Reply
#4
(11-14-2011, 09:51 PM)bobtravers Wrote:  105 rear derailleur should not take a 11-32 cassette, because the largest sprocket you can put on is a 27 or 28

Is your bike have some external BB bearings like theses??

http://www.bikepedia.com/Images/image2.aspx?w=300&h=300&filename=BBST2320.jpg&f=Hawley

I can help you further if you can check on your rear and front derailleur for the model ##, it should be RD-XXX and FD-XXX

I have purchased a sram 11-36 cassette and a SLX-RD-M663 as well as a Wippermann 10SO chain. I hope the 105 shifters will handle that derailleur. I still would like to get a Ultegra 6700 50-34 crankset. I believe the new frame takes a BB60 bottom bracket and a braze-on front derailleur (my 105 is a clamp on) so I'll need to replace them as well. Do you see any issues with this set-up? Thanks, Michael
  Reply
#5
Well mix-match of parts usually don't work very good, but, total capacity of the rear derailleur is fine... The only thing I don't know is do road shifters work with a MTB rear derailleur??? Is the ratio of cable plulled is the same on a road and MTB shifters?
  Reply
#6
Yes, most of the Shimano road and MTB RDs need the same amount of cable pull. On the conversion: I yould have gone with 3 chain rings in the front and a road cassette. The jumps on MTB cassettes are much too wide for my taste...
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
7,491
10-29-2019, 10:17 PM
Last Post: J_R_Schultz
 
4,455
10-18-2019, 06:39 PM
Last Post: Zviedrs
 
5,752
09-17-2015, 08:41 PM
Last Post: fishboy316
 
17,997
03-22-2011, 11:45 AM
Last Post: Arseneau69

Forum Jump:

[-]
10 Latest Posts
2010 Specialized Hardrock
Yesterday 07:02 PM
Why do spokes break?
Yesterday 02:34 PM
Vilano Warning
Yesterday 02:13 PM
Scram Force Front Derailleur
Yesterday 01:55 PM
Hello from Connecticut USA
03-17-2024 02:57 AM
Bicycle Touring and Camping
03-17-2024 02:48 AM
New hip fracture, looking for some words...
03-17-2024 02:44 AM
Upgrading The Vilano Diverse 3.0 DriveTr...
03-16-2024 12:21 PM
Lectric One
03-15-2024 07:19 PM
PAS Level 4 and 5
03-15-2024 07:16 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. meamoantonio
23 posts
no avatar 2. GirishH
19 posts
no avatar 3. ReapThaWhirlwind
18 posts
no avatar 4. ichitan
18 posts
no avatar 5. Painkiller
17 posts