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adjusting: Dura-Ace 7900 help

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adjusting: Dura-Ace 7900 help

Old 06-07-09, 11:34 AM
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Aspire
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adjusting: Dura-Ace 7900 help

Hello,

The shifting seems to be out of wack (ie...something the gear wont catch completing or sometime it wont ****f, etc)

Anyhow....please see the attachment and can you tell me what are the functions of each screw?

thanks


Last edited by Aspire; 06-07-09 at 11:38 AM.
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Old 06-07-09, 11:36 AM
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Go away.
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Old 06-07-09, 11:39 AM
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Originally Posted by kyakdiver View Post
Go away.
what is your problem dude? why so hostile? if you dont want to help then that is your choice but there is no need to be all rude. calm down man
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Old 06-07-09, 11:39 AM
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www.parktool.com

Go have a blast and stop treating us like a search engine.
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Old 06-07-09, 11:40 AM
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Originally Posted by Aspire View Post
what is your problem dude? why so hostile? if you dont want to help then that is your choice but there is no need to be all rude. calm down man
https://www.bikeforums.net/road-cycling/470422-introduction-road-cycling-forum-references-newbie-questions-answered-here.html
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Old 06-07-09, 11:43 AM
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Originally Posted by Flatballer View Post
www.parktool.com

Go have a blast and stop treating us like a search engine.
https://www.parktool.com/repair/readhowto.asp?id=64

thanks for the link. i am reading how to adjust my derailleur now.

ps. you are also rude but thanks for pointing me in the right direction. i appreciate the url.
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Old 06-07-09, 11:44 AM
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A adjust the angle of the rd
B+C are the hi/lo limit adjusters
D holds the cable, you don't "adjust" this
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Old 06-07-09, 11:48 AM
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Originally Posted by Aspire View Post
https://www.parktool.com/repair/readhowto.asp?id=64

thanks for the link. i am reading how to adjust my derailleur now.

ps. you are also rude but thanks for pointing me in the right direction. i appreciate the url.
https://www.bikeforums.net/showthread.php?t=470422 <-- read this, seriously, and stop being a pansy.
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Old 06-07-09, 11:52 AM
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here is the youtube video for the rear derailleur:
https://www.youtube.com/watch?v=xkGBa...e=channel_page

front:
https://www.youtube.com/watch?v=ngm6d...layer_embedded
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Old 06-07-09, 12:14 PM
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Originally Posted by Aspire View Post
what is your problem dude? why so hostile? if you dont want to help then that is your choice but there is no need to be all rude. calm down man

2 little words sure got your panties in a bunch.
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Old 06-07-09, 01:08 PM
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Unscrew D all the way, that'll fix it.
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Old 06-07-09, 01:15 PM
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Your hanger looks bent, by the way. Have you wrecked? Or stuffed the bike into a car or something? That's probably the reason the shifting is off all of a sudden.
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Old 06-07-09, 01:44 PM
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sounds like you would have been fine with Tiagra. what a waste.
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Old 06-07-09, 02:37 PM
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Aspire, keep in mind that some of the hyenas on BikeForum were born all-knowing experts, and dont realize that sometimes, people may not know where to look. Apparently, a beginner asking for help is a waste of their time... they are too busy discussing whether it is appropriate to wear team jerseys, whether more expensive bikes are better or whatever. Now THOSE threads are worthy of discussion.

F' em. Everyone is a tough guy on the internet anyway. Thankfully, not everyone is like that. Soon you know who has something valuable to add, and who's the forum clown.

And a thick skin is nice, as sometimes, the people who do have something valuable to add are a little blunt about it (cue the Yelling thread...). So HTFU and read the FAQ

V.
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Old 06-07-09, 02:37 PM
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https://www.sheldonbrown.com/
More info about bikes then you will ever be able to retain. All questions have already been answered by the late great Sheldon Brown... even about things that don't exists yet.
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Old 06-07-09, 02:40 PM
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Originally Posted by vkalia View Post
Aspire, keep in mind that some of the hyenas on BikeForum were born all-knowing experts, and dont realize that sometimes, people may not know where to look. Apparently, a beginner asking for help is a waste of their time... they are too busy discussing whether it is appropriate to wear team jerseys, whether more expensive bikes are better or whatever. Now THOSE threads are worthy of discussion.

F' em. Everyone is a tough guy on the internet anyway. Thankfully, not everyone is like that. Soon you know who has something valuable to add, and who's the forum clown.

And a thick skin is nice, as sometimes, the people who do have something valuable to add are a little blunt about it (cue the Yelling thread...). So HTFU and read the FAQ

V.
ah.............. yes. Lots of wind up to that point.
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Old 06-07-09, 03:20 PM
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Originally Posted by Flatballer View Post
Your hanger looks bent, by the way. Have you wrecked? Or stuffed the bike into a car or something? That's probably the reason the shifting is off all of a sudden.
You have a good eye. yes, I stuff my bicycle in back of my trunk last week. can you point where you think it is bent? I am looking at the hanger but my eyes are not as keen as yours.
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Old 06-07-09, 03:31 PM
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Originally Posted by Aspire View Post
You have a good eye. yes, I stuff my bicycle in back of my trunk last week. can you point where you think it is bent? I am looking at the hanger but my eyes are not as keen as yours.
Whenever you lay your bike down, whether on the ground or in the car, the drive side goes UP.
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Old 06-07-09, 03:48 PM
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Originally Posted by Aspire View Post
You have a good eye. yes, I stuff my bicycle in back of my trunk last week. can you point where you think it is bent? I am looking at the hanger but my eyes are not as keen as yours.
It's probably not bent enough to keep you from getting the shifting fixed. But if you have trouble getting the shifting perfect, the reason is the bent hanger.

You have a couple options at that point:

1.Take it to the bike shop, they have a tool that will straighten out a slightly bent hanger to make it perfect.

2. Buy a new hanger online and install it.

3. Try to bend the hanger you have back.


If you aren't confident with what you're doing, you might want to take option 1. If you want to learn how to work on your bike, try 3 and then 2. You just take the derailleur off and thread in a long bolt of the correct size. Put some vice grips on that thread and try to bend it the correct direction. Use a straight edge to check if it's flat. Repeat until flat. Then put the derailleur back on and you're good to go.

You can also buy the tool that the bike shop has if you want to get it perfect, but in my opinion it isn't worth it.

If you can't get it that way, just buy a new hanger and install it.. In fact, buy 2. It's good to have a spare, and they're really cheap.


Parktool.com also has info on fixing bent derailleurs, as does Sheldon Brown (from what I remember).
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Old 06-07-09, 03:51 PM
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Originally Posted by MONGO! View Post
A adjust the angle of the rd
B+C are the hi/lo limit adjusters

D holds the cable, you don't "adjust" this
errrr....ya you do. That's usually the first thing you adjust.
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Old 06-07-09, 05:27 PM
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Originally Posted by roy5000x2 View Post
errrr....ya you do. That's usually the first thing you adjust.
Should be the last thing you adjust, it's for fine tuning the tension.
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Old 06-07-09, 05:30 PM
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Originally Posted by MONGO! View Post
D holds the cable, you don't "adjust" this
wrong.
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Old 06-07-09, 05:30 PM
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Originally Posted by fordmanvt View Post
Should be the last thing you adjust, it's for fine tuning the tension.
also wrong.
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Old 06-07-09, 05:32 PM
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Originally Posted by fordmanvt View Post
Should be the last thing you adjust, it's for fine tuning the tension.
Well, not really. You don't really adjust the B-tension or low/high limit screws. They are what they are. They don't often get changed, so if they're fine, they're fine. If your shifting isn't where you want it, you should probably start with the barrel adjuster.

It's the last thing messed with when installing the first time, but the first thing messed with when going back to tune.
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Old 06-07-09, 05:32 PM
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Go to the LBS.
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