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 02-10-08, 12:25 PM   #1
mart64
Old, tired Newbie
Thread Starter
 
Join Date: Feb 2008
Location: Princes Risborough, Bucks, UK
Bikes: Specialised Expedition Sport 2002
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Replacing Alivio Gears

Hi all,

I have a 2002/3 Specialized Expedition Sport that came with Shimano Alivio gears front and rear. It has 8 gears on the rear and 3 on the front. I have hardly ever used the front set at all (only really to go down steep hills at speed), so I only really use only the middle sprocket and it is in pretty good condition. I understand that there is little to choose between basic front dérailleur units so I don't think I have to change it.

The rear is a different story. While the rear dérailleur unit looks straight and seems undamaged, the gears themselves are hooked, worn and some of the tips have broken although it all still works ok. So I'm looking to replace the gear cluster (cassette?), the chain and maybe the rear dérailleur unit too. The shifters are thumb push type but I can't work out which ones they are. Specialized seem to use a few different ones on the same model bikes!

Anyway, I understand that the Alivio is a low end product and it might be best to go up the range to maybe "Deore" or "Deore XT" (?), but then I hear things like long cage and short cage and the huge list of different models and gear ratios available.

So 1). What is a good replacement for the Alivio?
2). What do I need to buy (jargon time lol)?

I use the bike for general commuting, getting about town and sometimes some "green" miles along country lanes and fields and I am on a lower budget rather than a big one!
mart64 is offline   Reply With Quote
Old 02-10-08, 01:15 PM   #2
dobber
Perineal Pressurized
 
dobber's Avatar
 
Join Date: Oct 2003
Location: In Ebritated
Bikes:
Posts: 6,557
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have Alivio on my '96 Jamis Durango (7 speed) and it's been zero maintenance (aside from the natural wear items). Low end doesn't necessarily mean poor performance.

I'd just go ahead and replace the cassette and the chain.
__________________
This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
dobber is offline   Reply With Quote
Old 02-10-08, 01:48 PM   #3
acorn_user
Senior Member
 
Join Date: Dec 2005
Location: Charlottesville, Virginia
Bikes: Dawes Kalahari, Puch Prima Super Sport, Graham Weigh 853
Posts: 1,990
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I concur, just replace the chain and cassette. You could buy a Deore 8 speed cassette. I recommend Sram chains btw.
acorn_user 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 05:02 AM.