Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take Part in the March Giveaway: Coming Soon 3/24


Probable derailleur problems
#1
Hello, I recently purchased a western flyer freestyle 10 speed road bike for super cheap ($5) off the internet but now Im fixing it up to make it road ready and keep running into problems. The one i am particularly having trouble with is the rear derailleur, which is a Shimano positron II. It seems like the derailleur does not have to pull to pull the chain back into riding (have not actually ridden it due to safety concerns but moved the petals) resulting in extra slack. also only one of the pulleys actually touches the chain. Can I fix this or do i need to purchase a new one if so which one I am wanting to keep cost as low as possible just looking to be able to travel ~10 miles on roads at a decent speed. Would this one work: http://www.nashbar.com/bikes/Product_10053_10052_533510_-1___202435
  Reply
#2
(10-04-2013, 01:27 AM)jljack13 Wrote:  Shimano positron II. It seems like the derailleur does not have to pull to pull the chain back into riding (have not actually ridden it due to safety concerns but moved the petals) resulting in extra slack. also only one of the pulleys actually touches the chain.
You have typing or translation errors, so I don't understand the questions, but it sounds like the chain is routed incorrectly. Also that is not a cheap rear derailleur (RD), you can find them for half that, but we need a clear picture of the RD & RD hanger so we can tell what will fit, & if a short cage is OK.
  Reply
#3
This one will work:
http://www.amazon.com/Shimano-Tourney-TX35-Derailleur-Speed/dp/B003ZMH69S/

But; you may need different shifters.
Nigel
  Reply
#4
(10-04-2013, 12:30 PM)nfmisso Wrote:  But; you may need different shifters.

If it's a "Positron" system, you'll definitely need a new cable, maybe shifters. The positron systems don't rely as much on the back pull of the spring in the derailleur to pull it in to higher gears. You "push" the derailleur with the shifter which is why they use a solid, wire like gear cable instead of a normal one. I've never tried a positron shifter with a normal der, but it might work.
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
7,869
09-09-2014, 06:13 PM
Last Post: cny-man
 
8,149
10-24-2010, 02:26 PM
Last Post: GeorgeET
 
8,618
10-10-2010, 01:44 AM
Last Post: DaveM
 
7,367
07-27-2009, 02:13 PM
Last Post: DaveM
 
8,189
10-08-2008, 03:20 AM
Last Post: Skyguy9999

Forum Jump:

[-]
10 Latest Posts
What tools have you bought recently?
Yesterday 06:57 PM
Santini fluted frame
Yesterday 06:47 PM
Expensive bikes with crappy wheels
Yesterday 10:15 AM
Where are you from and What is your favo...
03-27-2024 11:43 PM
2007 Trek Pilot S.P.A. 5.2
03-27-2024 07:06 PM
2010 Specialized Hardrock
03-26-2024 09:16 PM
1990 Specialized Rockhopper How to Fluff...
03-25-2024 07:05 PM
Thread busted on right pedal crank
03-24-2024 08:52 PM
Trek domane tyre
03-24-2024 05:48 PM
Modern rims crack at spoke holes
03-24-2024 05:32 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Painkiller
21 posts
no avatar 2. ReapThaWhirlwind
16 posts
no avatar 3. meamoantonio
15 posts
no avatar 4. Jesper
15 posts
no avatar 5. GirishH
15 posts