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

adjusting eccentric bottom bracket on adams tandem trail-a-bike?

Notices
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.

adjusting eccentric bottom bracket on adams tandem trail-a-bike?

Old 11-07-11, 02:29 AM
  #1  
$pecial
Senior Member
Thread Starter
 
$pecial's Avatar
 
Join Date: Jul 2010
Posts: 72

Bikes: 2011 Raleigh Revenio 3.0, 2009 Jamis Sputnik,1988 Trek 820, 1991 Specialized Sirrus (purchased new in 1992), 1997 Gary Fisher Mamba

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
adjusting eccentric bottom bracket on adams tandem trail-a-bike?

Just purchased a few days ago and the front chain has a ton of slack. I would like to get it tightened up before we take it for a ride. I understand the concept of the EBB but I've never worked with one before. I've searched and find very little information about these tandems.
this is what it looks like


$pecial is offline  
Old 11-07-11, 03:03 AM
  #2  
Sixty Fiver
Bicycle Repair Man !!!
 
Sixty Fiver's Avatar
 
Join Date: Sep 2007
Location: YEG
Posts: 27,268

Bikes: See my sig...

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 58 Post(s)
Liked 27 Times in 17 Posts
Loosen the two set bolts and then use a pin spanner to rotate the eccentric bb so that the chain is at the right tension and then tighten the set bolts.
Sixty Fiver is offline  
Old 11-07-11, 07:30 PM
  #3  
JanMM
rebmeM roineS
 
JanMM's Avatar
 
Join Date: Jan 2006
Location: Metro Indy, IN
Posts: 16,033

Bikes: Bacchetta Giro A20, RANS V-Rex, RANS Screamer

Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 608 Post(s)
Liked 259 Times in 168 Posts
What 65 said.

After you adjust out the ton of slack, there's a chance that the tension won't be the same all the way around the rotation of the synchro rings. Just make sure that it's not too tight at any one spot.
Or, is that not an issue for this Trail-a-bike, with rings that look to be fixed in place?
__________________
Bacchetta Giro A20, RANS V-Rex, RANS Screamer

Last edited by JanMM; 11-07-11 at 07:34 PM.
JanMM is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bikebasket
Tandem Cycling
2
03-09-18 12:40 PM
cyclesteve
Tandem Cycling
4
08-25-17 11:47 PM
matthewlsims
Tandem Cycling
1
07-02-16 06:51 AM
Lawrence08648
Tandem Cycling
3
08-10-10 08:07 PM
dnewnham
Tandem Cycling
10
02-15-10 09:54 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 - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.