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

Thread Tools Search this Thread
Old 10-01-06, 01:35 AM   #1
Junior Member
Thread Starter
highplainsdrift's Avatar
Join Date: Feb 2006
Location: Auckland, NZ
Bikes: Avanti Blackthunder (beater), Avanti Edge
Posts: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
any problems running only one chainring at the front with a 8sp cassette

I'm in the process of building up a commuter out of an old avanti blackthunder. At the monent it's got 7speed acera hub on the rear, older ST EF20 3/7sp brake/shifters which I kind of like the look of but they are rusty and only 7sp. I've got a shimano deore lx 8sp wheel to put on. I've also got a deore lx derailleur for the rear and some V brakes and am looking for a shifter and levers at the moment. I'm going to replace the cranks and I'm thinking of ditching the front derailleur and only running it as a 8 speed.

Am I going to run into any problems with only the one chainring on the front. Especially with weird angles on the chain in the large cogs on the rear. Or would it be best to replace the current front derailleur(acera) with a higher grade one. I'm mainly considering this for simplicity and I also rarely use the smaller 2 rings on ther front and figure I'd just get stronger legs from using the big one on the front when going up hills.
highplainsdrift is offline   Reply With Quote
Old 10-01-06, 06:59 AM   #2
I Fold
bykerouac's Avatar
Join Date: Sep 2004
Posts: 269
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you use the big chainring as your solo front, you might have some rear derailleur issues when you shift to the larger cogs at the rear. I see no problem though if you use the middle chainring as your solo.
bykerouac is offline   Reply With Quote
Old 10-01-06, 07:07 AM   #3
Senior Member
Join Date: Feb 2001
Location: England
Posts: 12,954
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
You could put your big ring in the middle position for better chainline. You may need some form of chainkeeper either a bash-guard style or a front mech (no cable needed)
MichaelW is offline   Reply With Quote
Old 10-01-06, 07:36 AM   #4
Retro Grouch 
Senior Member
Retro Grouch's Avatar
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Catrike 559 I own some others but they don't get ridden very much.
Posts: 27,811
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 586 Post(s)
It's a beater - right? Why not try it and see how it goes? My bet is that it'll work fine for sure in the middle of the cassette. If you have a problem it'll probably be derailling the chain from the front chainring when you're in the innermost or outermost cassette cog. If that happens you can always reinstall the front derailleur without a shift cable and dial the limit screws into the middle to serve as a chain guide.

If it was my bike I'd also probably install the big ring in the middle ring position to sweeten the chainline.
Retro Grouch is offline   Reply With Quote

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 01:45 PM.

  • Ask a Question
    get answers from real people!
Click to start entering your question.