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 05-19-07, 08:21 PM   #1
Tazzman
Cutie Pie
Thread Starter
 
Tazzman's Avatar
 
Join Date: May 2007
Location: Illinois
Bikes:
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Can a 7 speed cassette be used on a 8/9 wheel?

Whats the difference between a 6/7 and a 8/9. Can some sort of spacer be put in to make up the difference, or is this just possible?

Thanks
Tazzman is offline   Reply With Quote
Old 05-19-07, 08:33 PM   #2
OregonXC
Senior Member
 
Join Date: Aug 2004
Bikes:
Posts: 99
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes, I use a metal 7 speed spacer on the spoke side.
OregonXC is offline   Reply With Quote
Old 05-19-07, 08:39 PM   #3
Tazzman
Cutie Pie
Thread Starter
 
Tazzman's Avatar
 
Join Date: May 2007
Location: Illinois
Bikes:
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Are these easy to find? Or would I need to find a bikestore nearby?
Tazzman is offline   Reply With Quote
Old 05-19-07, 09:12 PM   #4
Grand Bois
Senior Member
 
Grand Bois's Avatar
 
Join Date: Mar 2005
Location: Pinole, CA, USA
Bikes:
Posts: 16,820
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 130 Post(s)
You need a 4.5mm spacer behind the cassette to use a 7 speed cassette on an 8/9 speed hub. You can get them online. That's how I got mine. I don't recall where. I've got two bikes set up that way. I like seven speeds.
Grand Bois is offline   Reply With Quote
Old 05-19-07, 09:43 PM   #5
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: 29,112
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 175 Post(s)
Bike Tools Etc. has the spacer you need. Here is the link:

http://www.biketoolsetc.com/index.cg...em_id=WB-NCS45
HillRider is offline   Reply With Quote
Old 05-20-07, 06:22 AM   #6
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: 26,903
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 206 Post(s)
Quote:
Originally Posted by Dirtdrop
You need a 4.5mm spacer behind the cassette to use a 7 speed cassette on an 8/9 speed hub. You can get them online. That's how I got mine. I don't recall where. I've got two bikes set up that way. I like seven speeds.
There's one more trick that you need to know.

Your 7-speed cassette will be held together with some little bolts or rivets. You need to remove the bolts or grind the rivets smooth on the backside so the cassette will sit flush with the spacer. Otherwise the cassette will stick out too far and you won't be able to fit the lockring.
Retro Grouch is offline   Reply With Quote
Old 05-20-07, 08:00 AM   #7
vpiuva
*
 
vpiuva's Avatar
 
Join Date: Jan 2007
Bikes:
Posts: 3,458
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Here's hoping your 7 speed cassette is Hyperglide (lockring), not Uniglide (no lockring).
vpiuva is offline   Reply With Quote
Old 05-20-07, 08:21 AM   #8
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: 29,112
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 175 Post(s)
Quote:
Originally Posted by Retro Grouch
There's one more trick that you need to know.

Your 7-speed cassette will be held together with some little bolts or rivets. You need to remove the bolts or grind the rivets smooth on the backside so the cassette will sit flush with the spacer. Otherwise the cassette will stick out too far and you won't be able to fit the lockring.
The other way around this is to install the spacer after the smallest cog and tighten the lockring down on it.
HillRider is offline   Reply With Quote
Old 05-20-07, 08:32 AM   #9
bsyptak
Luggite
 
bsyptak's Avatar
 
Join Date: Aug 2004
Bikes:
Posts: 1,906
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The third way around is to go down to your LBS with wheel and cassette in hand and ask them if they have any old bottom bracket nuts. They come in lots of widths and they fit over the cassette hub body. Try them until you can get the cassette lockring/nut to grab threads.

Keep in mind that with any of these methods, you'll likely have to readjust your rear derailleur.
bsyptak is offline   Reply With Quote
Old 05-20-07, 09:22 AM   #10
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: 29,112
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 175 Post(s)
Quote:
Originally Posted by bsyptak
The third way around is to go down to your LBS with wheel and cassette in hand and ask them if they have any old bottom bracket nuts. They come in lots of widths and they fit over the cassette hub body. Try them until you can get the cassette lockring/nut to grab threads..
Do you mean bottom bracket lockrings?
HillRider is offline   Reply With Quote
Old 05-20-07, 02:56 PM   #11
DieselDan
Senior Member
 
DieselDan's Avatar
 
Join Date: Mar 2003
Location: Beaufort, South Carolina, USA and surrounding islands.
Bikes: Cannondale R500, Motobecane Messenger
Posts: 8,521
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by HillRider
Do you mean bottom bracket lockrings?
Not necessarily, as old style one piece cranks use big nuts to hold the crank together.
DieselDan 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 08:29 AM.