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Old 09-24-11, 02:36 PM   #1
medusa
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Derailleur pulls right

An ongoing problem I've had is that my derailleur sits pulling to the right...when aligning it manually all is OK...I've set the high and low screws and have no effect on this nor does the third screw ( spring? screw). All the other bikes in my building's rack have nice straight sitting derailleurs and don't seem like they want to jump of the cogs as mine do. I've enclosed both high and lows gears with the chain sitting on the largest chain stay. Is there an adjustment I'm missing.?
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Old 09-24-11, 02:46 PM   #2
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I'm obviously missing something. What do you mean by "pulls to the right".

Derailleurs have a return spring so anytime the cable is released they'll move to the right, so I don't think that's what you mean. If the RD is moving out when you release the lever, that's a lever problem in that it can't hold position against the RD return spring.

If you mean it doesn't hang vertically, that's almost always a bent hanger and not the RD itself.

I suggest you revisit a few tutorials on setting up derailleurs and see if they can help you work through your problem
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Old 09-24-11, 03:17 PM   #3
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Cable tension? Screw out adjuster a turn or two.
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Old 09-24-11, 03:25 PM   #4
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Disregard the earlier posts.

Yes the OP is most definitely missing something.

I took a closer look at the photo, and it was staring me in the face. What the OP is missing is the housing loop that runs from the frame to the RD.

To the OP, this is very fundamental, and I strongly urge you to re-read some of the tutorials on RD setup and adjustment, (and other topics) until you understand the basic principles before working on your bike.
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Old 09-24-11, 03:28 PM   #5
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Bingo. Without cable housing, your derailleur will not work.

from here: http://en.wikibooks.org/wiki/Bicycle...eur_Adjustment

Should look like this:
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Old 09-24-11, 05:24 PM   #6
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I was about to say folks, dude's missing a six-pack of housing... so to speak. Nice catch FBinNY.
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Old 09-24-11, 05:41 PM   #7
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so to speak. Nice catch FBinNY.
Thanks, and BTW- I'm FB, as FB living in New York
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Old 09-24-11, 06:12 PM   #8
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looks bent to me. Could be because the un-housed cable is pulling it to the outside.
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Old 09-24-11, 06:12 PM   #9
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Agree with that but the OP has an adjusting screws problem too, if you guys see the picture the chain is all the way to the small cog and the RD is off. The screw that controls the lower adjustment should be IN, not out as in the pictures. So there is a problem in there too. probably the guy doesn't know how to adjust them??

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Bingo. Without cable housing, your derailleur will not work.

from here: http://en.wikibooks.org/wiki/Bicycle...eur_Adjustment

Should look like this:
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Old 09-24-11, 07:56 PM   #10
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Originally Posted by ultraman6970 View Post
Agree with that but the OP has an adjusting screws problem too, if you guys see the picture the chain is all the way to the small cog and the RD is off. The screw that controls the lower adjustment should be IN, not out as in the pictures. So there is a problem in there too. probably the guy doesn't know how to adjust them??
Also correct.
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Old 09-24-11, 08:40 PM   #11
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For the OP [nice snakes or is it hair?] .. Tutorial :

you push against the return spring by hand to set the Low gear limit screw,
you can do that before you hook up the cable.

you turn the pedals, the return spring pulls the RD to the right, to the High gear..
then you set the high gear limit screw..
the pulley stops directly below the cogs on each end of the stack.

then you hook up the cable..

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Old 09-25-11, 06:02 AM   #12
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To all the seasoned fellows....yes I am aware that my cable housing was missing as I was in the process of switching out the twister shifters I had for combo brake/shift levers. This is what yet again brought up the problem as when I was trying to figure out how to connect the cable for the RD the olg ugly problem reared its head again. I am aware that the RD won't work without the cable or housing but I had this problem even before I switched out . When I set the H/L screws I did push in the spring and had them lined up on both large and small cog...but when I released the spring I got the pictured results I showed you. Despite being lined up especially on the largest cog it is hard for the chain to stay on the cog as it looks like it wants to pull off and I'm worried for the chain's life and performance as well as the cog. Since the wire wasn't really hooked up as there was no tension at all I would't think that the inclination to pull to the right when the spring is released would have been caused by the housing/chain/. I considered a bent RD but since I've ridden the bike a total of 20 minutes in 3 years and haven't had a fall I discounted that possability...especially since it would be against fall result ( bending out words rather than in).

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For the OP [nice snakes or is it hair?] .. Tutorial :

you push against the return spring by hand to set the Low gear limit screw,
you can do that before you hook up the cable.

you turn the pedals, the return spring pulls the RD to the right, to the High gear..
then you set the high gear limit screw..
the pulley stops directly below the cogs on each end of the stack.

then you hook up the cable..
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Old 09-25-11, 09:49 AM   #13
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I think you're confused. The spring makes it go to the small cogs ... that's intentional. When the cable is connected properly, it prevents the spring from pushing the derailleur to the small cogs unless you shift. When you shift to the big cogs, the cable pulls the derailleur with more force than the spring, allowing it to move up.

The 2nd point is that your high limit screw is out too far, allowing the derailleur to try and shift past the smallest cog towards the dropout.
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Old 09-25-11, 10:24 AM   #14
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Originally Posted by medusa View Post
I considered a bent RD but since I've ridden the bike a total of 20 minutes in 3 years and haven't had a fall I discounted that possability...especially since it would be against fall result ( bending out words rather than in).
The only way to eliminate any derailleur hanger alignment issues is to apply the proper tool (like this or similar). Bikes can come from the shop misaligned, get bent in transport or even in storage. I've had customers swear up and down that it wasn't bent, yet when I applied the tool...you get the picture?

The best way to see if the derailleur body itself is bent is to eliminate hanger misalignment by applying the proper tool. Believe me, you can waste a ton of time assuming it's straight, then when you find out it's not, you'll start all over again from square one.
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Old 09-25-11, 10:52 AM   #15
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Medusa, rather than having people who aren't there try to help you in piecemeal fashion, why don't you invest some time to read some of the various free tutorials so you have a grasp of the total picture of how the RD works and how to set it up properly?

You have multiple problems, starting, possibly, with a bent hanger, then all of the basic set up adjustments. Read the tutorials and do the installation and adjustment in a methodical, correct sequence and you'll get there.

If that isn't working, consider having a friend walk you through it and help you over the obstacles, or check into repair classes taught by various Metro DC shops.
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Old 09-25-11, 08:37 PM   #16
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Medusa...

If you still have problems and u can come to sterling va. I can fix you that.

ps:For the record, the way that the dropout is bent (slightly) has nothing to do with your problem.

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Old 09-26-11, 04:36 PM   #17
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Dear Ultra:

I worked on it yesterday and I "think" I've fixed it. Boy there's a lot a newbie doesn't know on the easiest way to do things. Having to deal with that chain pull was pure he_ _. I shorten the chain..connected the and realigned the DR....I have to take another look at it but From what I remember it sure looks a heck of a lot better than it did in the pics. The RD is really is differently positioned which I don't understand but if its works hey. I'll be tweaking it within the next 2 days......I'll let you know. I want to thank you for your offer to fix it....that's very kind of you. It 's a shame I haven't been able to ride the dang thing in the three years I've had it. It's a real pretty door stop. :-)

PS I tried to reply to private email but this group has a rule about having posted 50 times before being able to respond to private messages. :-(
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