Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Tandem Cycling A bicycle built for two. Want to find out more about this wonderful world of tandems? Check out this forum to talk with other tandem enthusiasts. Captains and stokers welcome!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-04-09, 09:26 PM   #1
Duo
Senior Member
Thread Starter
 
Join Date: Aug 2009
Bikes:
Posts: 244
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Schwinn Duo sport timing chain adjustment

Recently i purchased a used Schwinn Duo sport from the 80's. i have some mechanical ability and have been repairing it as needed.

The timing chain adjustment has been left for last as i don't know how to service it and there seems to be no info on the net for this old bike. i am able to service a bottom bracket and have the proper tools to do so or get them as needed.

Anyone have any idea on how to adjust the timing chain for this bike?

thanks
Duo is offline   Reply With Quote
Old 08-04-09, 10:38 PM   #2
zonatandem
Senior Member
 
zonatandem's Avatar
 
Join Date: Dec 2003
Location: Tucson, AZ
Bikes: Custom Zona c/f tandem + Scott Plasma single
Posts: 10,858
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 28 Post(s)
To our recollection the front BB is mounted into an eccentric.
Should be a couple bolts/allen fittings to loosen eccentric. Then rotate the BB in the eccentric to tighten chain. Don't make the chain overly tight, there whould be a bit of play in it.
Also the DuoSport we test rode for the company (it was a prototype) had a less than perfect eccentric/shell.
Yipes, that was a long time ago!
Pedal on TWOgether!
Rudy and Kay/zonatandem
zonatandem is offline   Reply With Quote
Old 08-06-09, 07:58 AM   #3
Duo
Senior Member
Thread Starter
 
Join Date: Aug 2009
Bikes:
Posts: 244
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
thanks

Yesterday, i peeked into the bottom bracket and not much grease on the stoker; was able to grease the stoker bearings. Thankfully this probably was more of a wall hanger tandem and the spindle looked ok. The bearings are built into the cups, so parts are probably non existant?

Could not take the front bottom bracket apart completely, so the eccentric is still unknown. The tools needed to disassemble the thing look unusual; i will need some giant wrenches i think. My local LBS does not want to touch the thing.

Duo
Duo 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 05:45 PM.