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 03-26-08, 09:25 PM   #1
Raleigh71
Senior Member
Thread Starter
 
Join Date: Jul 2005
Bikes:
Posts: 282
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
A RATCHET IN THE CRANk ???? Schwinn bike.

I just picked up a Schwinn 10 speed "World Tourist" bike at the local thrift shop. To my amazement, it has a rachet in the crank. When you pedal backwards, it ratchets, like a freewheel. I thought I'd seen it all by now but this one was a new one on me.

What the heck for?

What is the vintage of the bike?
Raleigh71 is offline   Reply With Quote
Old 03-26-08, 09:46 PM   #2
JanMM
rebmeM roineS
 
JanMM's Avatar
 
Join Date: Jan 2006
Location: In Central IN
Bikes: RANS V3, RANS V-Rex, RANS Screamer
Posts: 13,524
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 53 Post(s)
Sounds like Shimano Front Freewheeling system.
JanMM is offline   Reply With Quote
Old 03-26-08, 09:48 PM   #3
JanMM
rebmeM roineS
 
JanMM's Avatar
 
Join Date: Jan 2006
Location: In Central IN
Bikes: RANS V3, RANS V-Rex, RANS Screamer
Posts: 13,524
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 53 Post(s)
http://www.sheldonbrown.com/shimano1982/pages/35.html

1982
JanMM is offline   Reply With Quote
Old 03-26-08, 11:38 PM   #4
BikeTales
Senior Member
 
BikeTales's Avatar
 
Join Date: Feb 2008
Location: Cincinnati
Bikes: Miyata 310, Shogun 400 Mixte, Nishiki Bravo
Posts: 177
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I noticed this on my old schwinn too, and just today I read a forum on the schwinn site where someone asked about this. Someone sent me that link above too. Then i saw an ad for a schwinn on Craigslist that said you can shift gears without pedaling. I never knew what it was about until today, when I found 3 mentions of it online without even trying. weird eh?
BikeTales is offline   Reply With Quote
Old 03-27-08, 11:01 AM   #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: 29,116
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 179 Post(s)
There is one hazard to these things that you should be aware of if you do your own mechanical work. As long as the rear wheel is turning, the chain is also moving, even if the cranks are stationary, which is the opposite of the normal rear freewheel/freehub design.

Be aware of this and watch where you have your fingers when lubing the chain or doing any drive train work.
HillRider is offline   Reply With Quote
Old 03-27-08, 12:31 PM   #6
alecw35
Senior Member
 
Join Date: Jun 2005
Location: Angus, Scotland
Bikes: Many
Posts: 406
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
I saw a bike like this at the dump.

just left it there as it was wrecked
alecw35 is offline   Reply With Quote
Old 03-27-08, 02:37 PM   #7
Cynikal
Team Beer
 
Cynikal's Avatar
 
Join Date: Apr 2004
Location: Sacramento CA
Bikes: Too Many
Posts: 5,934
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Apparently you could shift while coasting.
Cynikal is offline   Reply With Quote
Old 03-27-08, 07:19 PM   #8
Raleigh71
Senior Member
Thread Starter
 
Join Date: Jul 2005
Bikes:
Posts: 282
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for the info. This is exactly what I have. I was planning on fixing it up and giving the bike to a local imimigrant family in Grand Rapds, MI that the local churches support. This isn't any kind of hot collectable is it? I couldn't find any like like this on ebay.
Raleigh71 is offline   Reply With Quote
Old 03-27-08, 07:48 PM   #9
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: 29,116
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 179 Post(s)
Quote:
Originally Posted by Raleigh71 View Post
Thanks for the info. This is exactly what I have. I was planning on fixing it up and giving the bike to a local imimigrant family in Grand Rapds, MI that the local churches support. This isn't any kind of hot collectable is it? I couldn't find any like like this on ebay.
Good show and a wonderful idea. No, there is nothing particularly collectable or desirable about these. Put it to good use.
HillRider 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 06:06 AM.