Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Using Avid BB7 rear disc brakes in the front

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.

Using Avid BB7 rear disc brakes in the front

Old 10-29-07, 09:42 AM
  #1  
jinws
one good leg
Thread Starter
 
jinws's Avatar
 
Join Date: Oct 2005
Location: SF <--> SJ
Posts: 919
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Using Avid BB7 rear disc brakes in the front

So this is a double post, I also asked in the cyclocross forum. I'm thinking about using Avid BB7 for road shifters for my commuter. I only need it for the front, and it's either out of stock, or $40 more than the rear. I read somewhere that the actual brake is the same, the only difference is the mounting brackets.

Anyone know if it's true?

Thanks
jinws is offline  
Old 10-29-07, 12:04 PM
  #2  
pmseattle
Senior Member
 
pmseattle's Avatar
 
Join Date: Jun 2004
Location: Seattle, WA
Posts: 451
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The only difference is the adapter. The actual caliper assembly is the same for front and rear. You do need to get the road version of the BB7s, not the MTB version. Pricepoint.com usually has the adapters available.
pmseattle is offline  
Old 10-29-07, 01:38 PM
  #3  
jinws
one good leg
Thread Starter
 
jinws's Avatar
 
Join Date: Oct 2005
Location: SF <--> SJ
Posts: 919
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by pmseattle View Post
The only difference is the adapter. The actual caliper assembly is the same for front and rear. You do need to get the road version of the BB7s, not the MTB version. Pricepoint.com usually has the adapters available.
thank you. exactly the answer i was looking for. Rear assembly plus front adapter is still a lot cheaper than front assembly.
jinws is offline  
Old 10-30-07, 09:12 AM
  #4  
AJU
Senior Member
 
Join Date: Aug 2006
Posts: 149
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Nope, my front and rear road specific BB7s calipers are NOT identical.
AJU is offline  
Old 10-30-07, 05:13 PM
  #5  
pmseattle
Senior Member
 
pmseattle's Avatar
 
Join Date: Jun 2004
Location: Seattle, WA
Posts: 451
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by AJU View Post
Nope, my front and rear road specific BB7s calipers are NOT identical.
How odd. I have built numerous bikes with these over the last few years and have used them interchangeably. Could you tell us what is different about them other than the adapters ? I just went and looked at mine again, and they are identical.
pmseattle is offline  
Old 10-31-07, 12:10 AM
  #6  
Ziemas
Senior Member
 
Ziemas's Avatar
 
Join Date: Nov 2004
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Both sets on my MTB BB7s are identical too.
Ziemas is offline  
Old 10-31-07, 08:26 AM
  #7  
AJU
Senior Member
 
Join Date: Aug 2006
Posts: 149
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The caliper is slightly smaller on the front, and the pad adjusting knobs are different. I don't have the bike in front of me to get any more specific, but they are certainly different. The front caliper also comes packed with an inline cable adjuster the is not included with the rear.
AJU is offline  
Old 10-31-07, 09:45 AM
  #8  
pmseattle
Senior Member
 
pmseattle's Avatar
 
Join Date: Jun 2004
Location: Seattle, WA
Posts: 451
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by AJU View Post
The caliper is slightly smaller on the front, and the pad adjusting knobs are different. I don't have the bike in front of me to get any more specific, but they are certainly different. The front caliper also comes packed with an inline cable adjuster the is not included with the rear.

Huh ?! I have three bikes with road BB7s, and the front and rear calipers are all identical. Both the rear and front all came with inline adjusters. The calipers are all the same size and so are the adjustment knobs. There are no markings identifying the calipers as "front" or "rear". The only difference was the IS to post mount adapter bracket. The MTB version does not come with inline adjusters if I remember correctly - are you using one of these in the rear ? Also, BB7s have changed slightly in appearance depending on which year they were manufactured.
pmseattle is offline  
Old 10-31-07, 09:50 AM
  #9  
AJU
Senior Member
 
Join Date: Aug 2006
Posts: 149
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by pmseattle View Post
There are no markings identifying the calipers as "front" or "rear".
The boxes are specific. Not sure of any markings on the parts

The MTB version does not come with inline adjusters if I remember correctly - are you using one of these in the rear ? Also, BB7s have changed slightly in appearance depending on which year they were manufactured.
Nope, not the MTB version. It's a different color entirely. I suppose it's possible that I got a mismatched set - 1 built in a different year than the other.
AJU is offline  
Old 10-31-07, 10:01 AM
  #10  
AJU
Senior Member
 
Join Date: Aug 2006
Posts: 149
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The differences in these pictures correspond to the differences in my brakes:
Attached Images
File Type: jpg
BB7Front.jpg (27.6 KB, 23 views)
File Type: jpg
bb7rear.jpg (13.0 KB, 18 views)
AJU is offline  
Old 10-31-07, 10:13 AM
  #11  
Ziemas
Senior Member
 
Ziemas's Avatar
 
Join Date: Nov 2004
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 1 Time in 1 Post
The one on the left is an older model. Look at the differences in the dials.
Ziemas is offline  
Old 10-31-07, 10:17 AM
  #12  
AJU
Senior Member
 
Join Date: Aug 2006
Posts: 149
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
My apologies for misinforming the OP.
AJU is offline  
Old 10-31-07, 12:41 PM
  #13  
pmseattle
Senior Member
 
pmseattle's Avatar
 
Join Date: Jun 2004
Location: Seattle, WA
Posts: 451
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Ziemas View Post
The one on the left is an older model. Look at the differences in the dials.
That is correct.
pmseattle is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mtb_addict
Folding Bikes
2
08-07-17 11:03 PM
HasteTheMoment
Classic & Vintage
31
07-12-15 09:39 AM
Sirrus Rider
Hybrid Bicycles
5
05-14-11 08:28 PM
Macross
Triathlon
3
05-11-06 10:22 PM
Maelstrom
Mountain Biking
1
10-12-03 08:02 PM

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.