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 03-25-08, 10:14 PM   #1
hotch
Senior Member
Thread Starter
 
Join Date: Feb 2003
Location: Connecticut
Bikes:
Posts: 58
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Upgrading components on Cannondale R600

We have a Cannondale R600 bike with the frame in perfect condition. Would like to change the shimano 600 8 speed cassettes, with the new ultegra sl either 9 or 10 speed, by changing both derailleurs, cassette, chain, and the STI shifters. I would not change the crankset, as I do not know what is involved. Any reason why this would not work?
hotch is offline   Reply With Quote
Old 03-26-08, 07:08 AM   #2
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: 28,844
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
The older 8-speed crank will work with the newer 9 or 10-speed components. The chainrings are spaced further apart so shifting may cause the narrower chain to get hung up between the rings if you try to shift under load. Shimano used to recommend "shifting while sitting down" as this limited the force on the chain.

You could install a new 9-speed inner chainring as Shimano closed up the gap by offsetting the inner ring's teeth toward the big ring.
HillRider is offline   Reply With Quote
Old 03-26-08, 07:38 AM   #3
demoncyclist 
Senior Member
 
demoncyclist's Avatar
 
Join Date: Oct 2002
Location: Medway, MA
Bikes: 2011 Lynskey Sportive, 1988 Cannondale SM400
Posts: 2,689
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
The existing rear derailleur should work as well.
__________________
DEMON

Satanic Mechanic
STAR 3 Spinning Instructor

2011 Lynskey Sportive (Shimano Ultegra 10s)
1988 Cannondale SM400 (Suntour XC-M 7s)
demoncyclist is offline   Reply With Quote
Old 03-26-08, 09:47 AM   #4
bluenote157
Senior Member
 
bluenote157's Avatar
 
Join Date: Apr 2006
Location: Orange County CA
Bikes: Surly CC, Raleigh Team Pro, Specialized Rockhopper with an xtracycle
Posts: 960
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm pretty sure you can save some cash and buy either 9 or 10speed STIs, a 9/10 speed chain, and an inner chainring and be good to go. If it were me, I would spend the money on a new set of wheels/cassette. ....then again.. i'm a frugal fool.
bluenote157 is offline   Reply With Quote
Old 03-26-08, 08:21 PM   #5
hotch
Senior Member
Thread Starter
 
Join Date: Feb 2003
Location: Connecticut
Bikes:
Posts: 58
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks folks, any special requirements for the inner chain ring, would most be compatible with the shimano 600 crankset. I really did not want to try to change the entire crankset. I do want to replace the shifters and both derailleurs.
hotch is offline   Reply With Quote
Old 03-26-08, 08:22 PM   #6
hotch
Senior Member
Thread Starter
 
Join Date: Feb 2003
Location: Connecticut
Bikes:
Posts: 58
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Also, comparing pricing it appears Probikekit has most beat, as long as I can count on the exchange rate being what is listed
hotch is offline   Reply With Quote
Old 03-26-08, 08:24 PM   #7
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: 28,844
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
Quote:
Originally Posted by hotch View Post
Thanks folks, any special requirements for the inner chain ring, would most be compatible with the shimano 600 crankset. I really did not want to try to change the entire crankset. I do want to replace the shifters and both derailleurs.
Any "9-speed" 130 mm bcd inner chainring will work. The most common sizes are 39 and 42T so pick the one you like.
HillRider is offline   Reply With Quote
Old 03-30-08, 08:45 PM   #8
hotch
Senior Member
Thread Starter
 
Join Date: Feb 2003
Location: Connecticut
Bikes:
Posts: 58
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I am still working on this as I can not find the ultegra sti 9sp double available on any website. I replaced the 8 speed cassette with an old 9 speed and it fit. What are the chances of going to a 10 speed. If I can use the 10 speed my options for the STI are better. From the time I have put in researching it would have been better to take it to a lbs.
hotch is offline   Reply With Quote
Old 04-24-08, 09:24 PM   #9
hotch
Senior Member
Thread Starter
 
Join Date: Feb 2003
Location: Connecticut
Bikes:
Posts: 58
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for your help - we replaced the STI with new R600s that I found online, 9s ultegra cassette and chain to match. I did buy the 130 mm bcd inner chainring, but could not get the crank assembly off to put it on. So far so good. On this bike and mine own, I used the 12-27 cassette. The lower gear is a big help for old poops like me.
hotch is offline   Reply With Quote
Old 04-25-08, 03:24 PM   #10
Camilo
Senior Member
 
Join Date: Apr 2007
Bikes:
Posts: 4,077
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 42 Post(s)
Quote:
Originally Posted by hotch View Post
Also, comparing pricing it appears Probikekit has most beat, as long as I can count on the exchange rate being what is listed
I've done a couple of transactions with probikekit. The invoices I received by email are actually in GB pounds. Your credit card company converts this to your local currency (US$, etc.) at the time they receive the charge from Probikekit and that is based on the official rate at that moment. Therefore, the credit card company is responsible for the conversion rate. I have found PBK's conversion rates to be accurate though. If not, I really doubt (based on a lot of foreign credit card experience) it would be inaccurate by more than a very tiny amount, and it could go either way.

This is just like what happens when you use your credit card when traveling.
Camilo 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 03:23 PM.