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Will not change into third gear on the front cog, very tight and will not turn on the gears provided on handlebars... Cant figure out what could be wrong

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Possible cable needs adjustment or chain guide may be bent or not working smoothly

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I just cant get used to changing gears,why is there two levers, one on each side of the handle bar.I end up with the chain coming off frequently.


Angie, Have patience. It will come to you. There are two levers, because there are two places where the gears change - in the front (by the pedals) and on the back wheel. You might find it easier to just use one lever. Do this--- have someone help you hold the bike so that the back wheel is off the ground. Turn the pedals on the bike and work one shift lever at a time so that you can see which lever is for the front vs. the rear. If you have three gears in the front (the correct name is chain-rings) then leave the front one so that the chain is on the middle chain ring. If there are two, then select the larger one. Now shift the back one (the gears back there are called cogs). You might have 5,6,7 or even 8 cogs back there. Practice shifting the back cogs to see what is happening. If you find that the chain comes off, even when you leave the front on on the middle chain ring, you need an adjustment. Good luck! Al K

Aug 12, 2011 | Shimano Cycling

1 Answer

I'm new to multi gear bikes..whats the reason for the 6 gear positions on the right and 3 gear positions on the left hand side


Bicycles have two sets of gears (front and back). The 6 position control slides the chain between the 6 sprockets (cogs) on the back. The 3 gears are for the front set of cogs. Between the two sets of sprockets, you get 18 (theoretical) different rates of chain movement per turn of the pedals. In fact some of the settings overlap. (However some of these should not be used. Do not use the settings that pull the chain to the furthest inside of one derailleur and the furthest outside of the other. This diagonal between the biggest and biggest sprockets (or smallest to smallest) puts extra strain on the chain.) The back derailleur is in the lowest gear when on the biggest sprocker. The front low gear is on the smallest cog. The highest gear possible is on the smallest rear cog and the largest front cog.

By planning the shifts in gears, you can maintain the same speed and cadence (rate of pedalling) on different terrains. (For going up a hill, use a lower gear than on flat terrain. However don't go to low or the bike may not balance well.) To shift through a large range of gears, you must be pedalling and then move the rear derailleur control followed by the front derailleur then the back again. (For faster shifts to a low speed, you can shift the front derailleur first but that can stress the system.)

For a guide to using the gears: http://www.southcoastbikes.co.uk/articles.asp?article=Gears .

I hope this helps.

Cindy Wells

May 14, 2011 | Huffy Cycling

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

Good evening - I have Shimano Alivio Gears on my Cannondale F6 MTB and the gears are trying to change down a gear on the rear cogs (go to the larger cog) and need adjusting - which screw is the one to...


Neither screw is for mis-shifts. Those are limit screws for the largest and smallest cogs. Tweaking the cable tension will usually bring in the indexing...

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

It sounds like your cable is/was a smidge too tight.

Aug 14, 2010 | Mountain Shimano Alivio Front Bike...

1 Answer

I'm a 60 year old female. Only just learning to ride a bike. Husband been riding for 60 years and doesn't seem to understand my problem! I have a bike with SI-6KT0B gears. I understand the principles of...


Congratulations on learning to ride the bike. I use the rear gears mainly i.e. the gears on the right hand side. Each rear gear makes a little difference so it makes it a little easier to go uphill. (When the chain is on the back smallest cog wheel it's hardest to pedal and easiest on the largest. The reverse is true of the front cog wheels) If you come to a very steep hill you should use the front gears i.e. the lever on the left hand side. This makes a bigger difference to the effort needed to climb a hill. When you have put the front gear into the easiest position, (on the smallest cog wheel) you can still use your rear gears to make it easier still. For going on flat ground or downhill most people keep both sets of gears on the hardest gear. (The front gears on the largest cog wheel and the rear one on the smallest) However there's no rule that says you have to. Use the one that feels you're using just enough energy to turn the pedals and in time you won't have to even think about the gears. I hope this helps.

Aug 09, 2010 | Cycling

1 Answer

I have just bought a brand new bike and find the rear cog changing lever on the right handlebar is difficult to turn from gear 6 to 1. Adjusting the cable seems to make no difference. Any suggestions. ...


Are you shifting while pedaling? How about the top of the shifter on the handle bars, is it too tight? Get some oil down in that cable or some grease. Hope this helps.

Aug 01, 2010 | Cycling

2 Answers

THE CHAIN RIDES OVER THE LARGEST REAR COG,AND DOESN'T CHANGE DOWN TO THE SMALLEST,CHANGING UP TO THE LARGEST COG,IT IS ON IT AND STILL ANOTHER GEAR CHANGE TO GO


Hi,

This one's easy enough.. If you move the derailer through it's full stretch you will see that part of it will be blocked in each direction by a small screw. These screw adjusters are to stop the chain from running over the end gears, and sometimes if they're too tight they can stop the chain from reaching the gears in the first place.
A small screwdriver is all you should need, turn the bike upside down, loosen these screws completely and then change gear to one end first until it runs smoothly on the chain and then do the same with the other.
These are designed to be adjustable so you can add or remove gears/change wheel sizes etc and then readjust to run smoothly..

Hope this helps..

Oct 12, 2009 | Shimano XT M772 Shadow 9-Speed Rear...

1 Answer

Not leting me shift into 3rd gear


Front or rear?
Rear: Flip the bike onto the bars and saddle, then shift into third while turning the crank. Use the barrel adjuster on the back of the derailleur to align the derailleur over the proper cog. If this doesn't work, you may have a bent cog or a bent derailleur hanger. Does it only happen in third? Inspect your third cog for any deviation.
Front: Shift into the small chainring and release the derailleur cable. Pull tight and re-attach. Shift into the big chainring now. If it still won't go, use the barrel adjuster on the shifter co tighten the cable until it does shift. If necessary (because the derailleur will not go to the big chainring on account of a mechanical impedance) adjust the "H" screw to allow the derailleur to move far enough out to shift on to the big ring.
If all else fails, check with the bike shop.

Hope this helps,
matt

Sep 19, 2009 | Pit Cycling

1 Answer

FUJII 80'S ESPREE. I AM IN TOP GEAR ON FLAT GROUND. WHICH IS BEST TO CHANGE FREE WHEEL GR SET OR FRONT OUTSIDE CHAINWHEEL. LIVE IN LOUISIANA. ITS FLAT. CAN I GO TO 6 SPD CASSETTE AND WHAT ADDNL EQUIPT...


Is the bike currently equipped as a six-speed? You can buy a cassette with a different cog range on eBay by looking for 6spd cassettes. Remember that the overall gear ratio is Big ring:Small cog, so a 44-tooth chainring with an 11-tooth small cog on the cassette is rotating your rear wheel 4 times per crank revolution. You can use the ratio to figure out how much faster your new cassette will get you going.
Good luck,
matt

Sep 13, 2009 | Fuji Cycling

1 Answer

I'm trying to adjust the shimano gearing on my trek bike and am having a little trouble


Front or rear? What is it doing?
Flip the bike over onto the handlebars and saddle and let us fix it.
Here is how to adjust the rear (first):
-Set your front gear to its middle position.
-Shift the rear into the highest gear.
-Disconnect the derailleur cable.
-Screw the barrel adjuster on the shifter (or down tube if it is a road bike) to fully turned in clockwise.
Screw the barrel adjuster on the rear derailleur to its halfway point.
-On the back of the rear derailleur you will see two screws. One will be marked "H" and the other "L". These mean high and low. Adjust high to get your jockey wheel on your derailleur perfectly centered over the smallest cog on the cassette. Manually shift by pushing the derailleur (while cranking the pedals) to the largest cog (1st gear) and set this stop on the derailleur "L" where the jockey wheel is over the cog, but past it where it would be touching the outside of the cog if they were side-by-side.
-Pull the derailleur cable taut and re-tighten it.
Shift the rear to the middle gear and adjust the derailleur using the barrel adjuster to center the jockey wheel directly over the cog it should be.
-Now shift up and down the cassette, cranking as you go and in every gear, back-pedal to make sure there is no problem with the gears hopping. If they do, adjust as necessary with the barrel adjuster.
Here are some tips for the front:
-Shift into low gear on the front and rear derailleurs. Make sure the chain is not rubbing on the front derailleur. If it is, adjust the screw marked "L" until the chain just clears the derailleur but does not touch it.
-Pull the derailleur cable taut and re-tighten it.
-Now shift the front into the middle gear and while it is still in the low gear in the back, crank to make sure the chain is not rubbing on the front derailleur. If it does, adjust the tension of the cable with its barrel adjuster.
-Shift the front into high gear and shift the rear to the highest gear, cranking as you shift. If the chain is not rubbing, you are all set.

Sep 02, 2009 | Cycling

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