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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.

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Old 06-24-07, 01:40 AM   #1
kyle!
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ooooohh peugeot!!!(rear derailleur!)

so i picked this up for my girlfriend today.



the parts are kinda beat(makes sense) but the rear derailleur is shot!. i think, the pulleys have no teeth on them(plastic, ugh) and it won't hold tension. i tried fiddling(bad idea) and now it's way loose. any tips for at least tightening this thing up?



also. i'm gonna look into tomorrow but do you fellas know how easy it would be to get this replaced? like, the whole derailleur? is it something any bikeshop worth it's salt would have or are these kinda rare. i know peugeot parts aren't the easiest to find sometimes with the french sizing and all.
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Old 06-24-07, 02:12 AM   #2
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You're supposed to say "I love you" with roses, not dirty, old bicycles.
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Old 06-24-07, 02:16 AM   #3
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ha, she wanted it. i'm still cleaning it up too. sheesh.
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Old 06-24-07, 05:15 AM   #4
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Seems to me that if the pull ratio is correct, just about any dérailleur ought to work.

Try asking this on Classics & Vintage.
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Old 06-24-07, 06:58 AM   #5
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The bike looks to have downtube shifters, if the rear shifter is friction most any ol' rear derailleur will work (and likely work better than that one ever did )-
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Old 06-24-07, 07:05 AM   #6
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Quote:
Originally Posted by kyle!
the parts are kinda beat(makes sense) but the rear derailleur is shot!. i think, the pulleys have no teeth on them(plastic, ugh) and it won't hold tension. i tried fiddling(bad idea) and now it's way loose. any tips for at least tightening this thing up?
Not all jockey wheels have teeth, and most are plastic. Disconnect the cable from the derailleur by loosening the pinch bolt. Push your shifter lever all the way forward. Reconnect the cable at the pinch bolt, trying to keep the cable as taut as possible. Then make sure your limit screws are set properly.

http://sheldonbrown.com/derailer-adjustment.html

As mentioned, you can replace it with nearly any modern derailleur, or a vintage one. Check ebay, you can find a decent one cheap, if in fact you end up replacing it.
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Old 06-24-07, 10:28 AM   #7
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Originally Posted by JunkYardBike
Push your shifter lever all the way forward. Reconnect the cable at the pinch bolt, trying to keep the cable as taut as possible. Then make sure your limit screws are set properly.

this, i did not think to do! thank you so much, i'll report back with my findings!!!!!!

(if i wasn't a fixed gear dork, this wouldn't be a problem!!)
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Old 06-24-07, 10:35 AM   #8
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Do not waste your time on that old Simplex Delrin RD. Even if you get it to work the jockey wheels will soon self destruct. The "classic" replacement for these back in the day was with a Suntour GT or V-GT model, although just about any RD will work. Post a WTB in the C&V forum or scour ebay for something cheap.

Last edited by vpiuva; 06-24-07 at 10:46 AM.
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Old 06-24-07, 10:43 AM   #9
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yeah, i'm just trying to get this thing mildy ridable for a few days. nothing that will last, until i find a new RD. thanks.
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