Bicycle Mechanics - STI upgrade ... needed? ... recommendations?
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.
12-26-05, 09:06 AM
My 9-year old bike with 8-speed Shimano Ultegra STI shifters has been giving me shifting troubles that tell me the chain / cogs are worn (again) and the rear derailleur is probably worn out. The mail order places don't carry any 8-speed stuff anymore and my LBS doesn't have much. So it looks like planned obsolescence has won and I may have to upgrade just to get parts. Can anyone comment on the availability of 8-speed components? Do you know a source of parts?
IF I decide to upgrade, should I go to 9-speed or jump to 10-speed? If I recall, the dropout spacing is 130-mm for all three.
12-26-05, 09:45 AM
What he said ^^^^^^^.
Plus Google the name of the individual part.
12-26-05, 09:51 AM
Less 8 speed (unless you like SORA) more 9 speed. Ebay is you best bet, but a 9 speed upgrade might not cost all the much. STI 9 speed shifters and a new chain and rear cassette. Your cranks and front and rear dr should work.
12-26-05, 10:47 AM
A rear derailleur from any 9 or 10-speed group will work fine with your 8-speed shifters and cassette. Finding the cassettes is a bit of a problem but they are still out there. 8-speed chains are readilly available and a 9-speed chain will work too.
If you want to upgrade a bit, 9-speed 105 components are selling at bargain prices right now since 10-speed 105 has been introduced. 9-speed components should be available for a long time to come too.
12-26-05, 11:56 AM
Nashbar has 8 spd cassettes for $19.95. Available in 11x28, 12x32, 12x28, 12x21 or 12x23.
Actually, an 8spd derailleur will generally work with a 9spd STI shifter, if you let the low limit out a bit. I really doubt your rear derailleur is worn out, I think I have actually seen one derailleur that was truly "worn out". If you go 9spd, get some Tiagra/105 9spd shifters (work great + cheap), keep your rear derailleur (maybe get new pullies?), and replace the cassette + chain.
Convert to friction/ratchet barcons and stop sweating component compatibility.
12-26-05, 06:05 PM
Barcons are a great option, that is what I use anymore.
Powered by vBulletin® Version 4.1.12 Copyright © 2014 vBulletin Solutions, Inc. All rights reserved.