Question about Campagnolo Chorus 10 Speed Short Cage Rear Derailleur Campy

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Having problems fine tuning my rear derailleur 10sp campy chorus. it will skip a gear going up and down. what am i doing wrong :)

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At 10-speed spacing there is virtually no allowance for imperfect adjustment or any friction in your shift cables.

http://www.parktool.com/blog/repair-help/categories/derailleur-systems

Posted on Mar 24, 2011

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I have a honda trx 350 es my problem is it wont go into any gear the motor was clicking but now its gone dead


Hello,

Have a helper lift the rear wheel of the bicycle slightly off the ground.

2
Kneel beside the bike and turn the pedals slowly by hand. Using the shift lever, adjust the front derailleur so that it rests at about the midpoint of its movement range.

3
If the initial problem is that the chain won't shift onto the largest rear gear, locate the two small side-by-side adjustment screws on the rear derailleur. Turn the left (or upper) adjustment screw counterclockwise a quarter turn with a small Phillips screwdriver. If the initial problem is that the chain won't shift onto the smallest rear gear, skip to step 6.

4
Continue turning the pedals and shift through all the rear gears. If the chain will still not go onto the largest rear gear, shift the chain back down to the smallest rear gear. Turn the right (or lower) adjustment screw clockwise as far as possible before the chain begins to click or rattle.

5
Shift through the gears again to test. If necessary, turn the left (or upper) screw counterclockwise another quarter turn.

6
If the initial problem is that the chain won't shift onto the smallest rear gear, begin by turning the right (or lower) adjustment screw counterclockwise a quarter turn. Shift through the gears to test.

7
If the chain still won't go onto the smallest rear gear, shift the chain to the largest rear gear. Turn the left (or upper) adjustment screw clockwise as far as possible before the chain begins to click or rattle. Shift through all the gears to test.

8
Follow steps 1 through 7 for the front derailleur, which operates on exactly the same mechanism as the rear derailleur (you still lift the rear wheel in step 1). There are two side-by-side adjusting screws that control alignment.
If otherwise,
Tighten the high gear screw, the one that hits a cam when you shift to the smallest sprocket, until you can no longer shift into high gear. Put the shifter in high gear position and while turning the pedals, unscrew the high gear screw until the system engages high gear again. Shift between high gear and the second smallest several times, backing the screw out a little more, just until the derailleur shifts smoothly.

2. Tighten the low gear screw until you no longer get first gear. Repeat the process for this low gear limit - back the screw out just until the bike shifts smoothly from the second largest to the largest sprocket.

3. If you cannot engage high or low gear, or if the above technique does not work for high or low gear, the cable may be improperly adjusted.
Shift into high gear and push the shifter all the way to the end of its travel. Loosen the cable inner wire anchor bolt. That's the bolt with a hole through which the derailleur control wire is clamped. Pull the slack out of the wire, and retighten the anchor bolt.

If your bike has index shifting, you'll find an adjusting barrel either at the derailleur or the shifter. The adjusting barrel is a hollow screw at which the cable outer housing stops, but which the inner wire continues through. Fine adjust the cable tension by turning the adjusting barrel until the clicks on the shifter correspond with proper shifting at the derailleur.

If your bicycle does not engage high gear, or is slow to engage high gear, even though properly adjusted, the cable is probably the culprit. Replace the sticky or rusted cable, and the problem will usually go away.

If you have done everything right, but the bicycle does not shift reliably, the most common reason is that the chain and freewheel are too worn to work properly. If you replace one, you must replace both. A new chain on an old freewheel or visa versa usually skips, and the new part wears out very quickly.

Another possibility is a bent derailleur. The guide pulleys, those little wheels that take up the chain slack, must pivot on the same plane as the freewheel sprockets. Derailleurs become bent when the bike falls over on the right-hand side. Whenever you set a bicycle down, or put it in a car, set it on its left side to protect the derailleur. You can sometimes straighten out a bent derailleur by simply bending it back and readjusting the limit screws.


Hoping this will help to solve the problem, do take care....

Sep 19, 2011 | Quad Cycling

4 Answers

I have Campy mirage 10 sp and the rear deraileur shifter ( the right shifter) will skip gears while shifting down 23 to 11. Often I can hear the mechanism making multiple "clicks" on a single...


I would lube everything and check the derailleur adjustments and cable tension. Some Campy chains are 'notchy/clunky' all the time. It's just the way they are. If the bike is low mileage most likely nothing major is wrong. Check the derailleur hanger too just in case you dropped the bike and bent it or something. The shifter 'G' springs will wear out before the derailleur. When the springs are worn, the shifts will be imprecise and will jump from gear to gear without shifting. One thing with Campy stuff...it DOES take awhile to break in. Unless the shifting is horribly off, I wouldn't worry about it - just ride it more - and see what happens. Mirage is a good product, I think inline with Shimano 105 stuff.

Sep 12, 2011 | Campagnolo Mirage

1 Answer

IJust bought a 2009 Motobecane Cafe Latte Hybrid bike used. The previous owner hardly used the bike and it looks new. He stated the bike probably need a tune up and the front derailleur was skipping the...


The derailleur has to be properly aligned to the chainwheels, then adjusted properly. A new cable must be installed correctly so that there is not excess friction, and then given the right tension. If that is done then the problem may be the shifter. If when you shift from the large chainwheel a single click sends it to the smallest then the shifter is possibly broken. You can try squirting wd-40 or similar into it to see if it's gummed up.

Mar 18, 2017 | Motobecane Cafe Latte

1 Answer

I have a SRAM 3.0 rear derailer. It is difficult going into the two largest gears, I have a 7 speed cassette. I notice there is no barrel adjustment on it. Any suggestions


The barrel is for fine tuning the indexing among the gears. Limit screws set the inner and outer physical swing of the derailleur.

A simple web search for "Sram 3.0 Mountain Bike Rear Derailleur adjustment" finds the manual.

http://www.sram.com/_media/techdocs/RD_X0_X9_X7_5_4_3_QS_03.PDF

There IS a barrel adjuster.

http://www.parktool.com/blog/repair-help/rear-derailler-adjustments-derailleur

Aug 10, 2011 | Sram 3.0 Mountain Bike Rear Derailleur -...

1 Answer

Cannot get rear derailer to work properly 24 inch girls evolution


Don't start messing with the derailleur yet! Make sure your shifting trouble isn't due to something else, such as a warped, dirty, or stretched chain, gummed-up pulleys, crud in the cable housing, trapped cable, or a bent derailleur hanger
Clean the chain and the rear derailleur pulleys. Pull the chain away from each pulley, and turn the pulley to make sure it can move freely. A pulley that offers resistance to turning must be replaced.
Now check the cable to be sure it slides freely. Mud and grit within the cable housing, or on a cable-guide, can keep the derailleur from moving a "full gear" during downshifts. If the cable doesn't slide freely in the housing, you may be able to clean or lube it to restore smooth shifting.
Let the high-gear limit screw. In your highest gear on the shifter, and with the chain on the smallest cog, position the derailleur so the upper pulley exactly matches the teeth of the small cog. Run the chain a bit with the front derailleur in the large ring, adjusting the limit screw until the pulley and the cog seem to match perfectly.

Setting the high-gear (small cog) limiting screw.



Once you're sure the derailleur matches the cog, move it just a whisker (1/8 to 1/4 turn) towards the other cogs. (You may need to readjust a bit if you get chain-skip.)

Closeup of setting the limiting screw.



Now adjust the low-gear limit screw. Shift into the lowest gear (largest cog). If it won't go, loosen the limit screw. With the chain on the largest cog (and the front derailleur in the small chainring), adjust the derailleur so the upper pulley exactly matches the teeth of the large cog.Once it's perfect, turn the limit screw so it moves the derailleur a tiny amount towards the other cogs (1/8 to 1/4 turn usually works).

Setting the low-gear (largest cog) limiting screw.



Now shift to the highest gear (smallest cog). Push the shift lever to downshift one gear (go from the smallest cog to the next-smallest). If it doesn't shift, tighten the cable with the barrel adjuster, 1/2 turn counter-clockwise. Backshift and try again. Continue tightening until it shifts. If it overshifts, going from the smallest cog to the third-smallest, loosen the cable by turning 1/2 turn clockwise. Backshift and repeat until it shifts exactly from the small to the next-smallest cog.

Fine adjustment of tension in the derailleur cable.





Now go to the second-smallest ring. Tighten or loosen the cable slightly, until the outer side plates of the chain are just clearing the third-smallest cog. Shift up and down, fine-tuning until you're satisfied.

Checking the position of the chain on the cogs.





Mar 04, 2011 | Pacific International Pacific Evolution 24...

1 Answer

Hi, I have recently installed a new X9 derailleur in accordance with the manufactures' instructions. I have also relpaced the rear hanger. The gears shift ok, however, when in gear, especially the...


Did you also replace the chain or any of the cogs? Skipping is a common condition when you replace one and not the other. Or if the cogs and chain are well worn, it may simply be time to replace them. You can usually do fine without replacing the gear-rings (that is, the cogs by the pedals)

Nov 10, 2010 | Sram X9 Mountain Bike Rear Derailleur

1 Answer

Campag Chorus medium cage rear mech with 13 - 29 cassette


That's a 16-tooth spread in the rear. The cage can handle 36 teeth of chain length change including the front. That means your highest and lowest chainrings should be within 20 teeth of each other, but I avoid those issues by being careful to find a straighter chain line than anything near a cross-chain, typically not venturing more than one cog past the center opposite the chainring I use. That way I can actually use a shorter chain, too.

http://parktool.com/repair/readhowto.asp?id=64

Read up on the B-screw adjustment

Jun 07, 2010 | Campagnolo Chorus 10 Speed Short Cage Rear...

1 Answer

How does the break cable go through the shifter?


Go to parktool.com/repair and click the brake levers of the bike to bring up a list of brake-related info. Select brake levers, which is the first on the list. The Campy levers and cable are the second topic in the article. There are pictures.

Nov 19, 2009 | Campagnolo Chorus 10 Speed Short Cage Rear...

1 Answer

My campy shift (right) cable is spliting/frayed and sticks out from under the shifter-OUCH!. Can I pull it out and just replace the cable itself and not the housing? It's a two year old 10 spd. Chorus...


Yes, you can. If you go to parktool.com and check out repair help at the top right hand of their home page, click the derailleur on the bike and it will take you to a page on the drivetrain. Select shifters and you will find road shifters about 2/3 or 3/4 of the way down the page.

Hope this helps,
matt

Oct 05, 2009 | Clark 's Mountain Bicycle Front and Rear...

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