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How do I re-install and adjust rear derailleur on Magna bicycle

Replacing tube on rear wheel. Cannot find any exploded view on how to put the derailleur back on. The derailleur is a Shamino S1S.

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Posted on Jan 02, 2017

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SOURCE: Bicycle Tires Tube

look at the side of the tire for a series of numbers

Posted on Nov 05, 2008

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SOURCE: rear bicycle wheel won't turn. Brakes are siezed.

Find the arm that hold the cable. Loosen it to the desired tension.please comment if it does not work for you! I can help! Good Luck!

Posted on Jun 11, 2009

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SOURCE: adjust rear hand brake on Mongoose 20 inch bicycle

Here is the perfect site for you:http://www.bikeguide.org/how-to/brakes/brakes.php They're called gyro brakes by the way.

Posted on Aug 28, 2009

Coachphil
  • 347 Answers

SOURCE: I am trying to fix

You can use the 6 speed rear derailleur with no problems. The 5-spd shifter does not need to be disabled, as it will work just fine.

The shifter controls the rear derailleur, telling it how far to move. The rear derailluer just follows what is dictated, so there is no real difference mechanically between the 5spd and 6spd derailleurs, only in the shifter.

If you wanted to make the bike 6spd, you would have to change the shifter and gears along with the derailleur.

Posted on Dec 21, 2010

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2 Answers

Ezip


Since you didn't specify which derailleur needed adjusting, I have included links to adjusting both the front and rear derailleurs.
Park Tool Co ParkTool Blog Front Derailleur Adjustments
Park Tool Co ParkTool Blog Rear Derailler Adjustments derailleur

Apr 13, 2014 | Cycling

1 Answer

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

1 Answer

Have a multi-speed huffy female bike need to know how to put rear gear derailleur back together


You didn't actually take the rear derailleur apart did you? I'm thinkng not. Search engine "how to install rear wheel" or "... derailleur" for videos.

Jul 11, 2011 | Cycling

1 Answer

How to adjust front derallier on fuji 18 speed


You will need to raise the back wheel to perform these adjustments... so that you can activate the pedals and oberve closely the functioning, as you adjust....

On the tube mounting: The derailleur needs to just clear the teeth of the front chain wheels, as it moves from one to the other. It needs to be square with the chain wheels.

The other adjustments are limiting in nature. You need the derailleur to not move the chain off of the outside of either front chain wheel. as you get closer, move the rear derailleur to extremes and then shift the front derailleur, slow and fast..... Limit is correct when you can move the derailleur so as to not ride on the chain, but not throw the chain off the wheels.

Sometimes, guys turn the front derailleur, slightly so that the last portion of the derailleur body gives the chain a little boost to the bigger gear...This is just a very small amount. Sometimes it just works better that way.

Nov 22, 2010 | Shimano 24 Speed Road Racing Bike Bicycle...

1 Answer

Alivio 8 speed rear derailleur cable broken


There is a bolt on the derailleur that holds the cable. Loosen it to remove the cable from the derailleur. If there is a cap on the cable, remove it by pinching it with a pair of pliers. i do not know what style shifters you are using, but most all of them have a plastic cap covering the port for the cable. Shift to the highest gear to prep the cable for release and remove the cap. Push the cable back into the shifter and it should come out of the port you opened. Now, slide the new cable in and pull it through its circuit of cable housings and back to the derailleur. Attach the cable and shift to the lowest gear (big cog). Now, pull the cable along the top tube or seat stay (wherever it is more accessible) away from that tube very firmly several times. This pre-stretches the cable and minimizes necessity of adjustment later. The harder you pull, the better. Once you have stretched the cable, shift to the highest gear again and release the cable on the derailleur. Adjust the barrel on the derailleur to the center of its range and turn in the one on your shifter all the way. Now, pull the cable taut and reatach it on the derailleur. You can cut the cable to length and put a cap on it now. Shift into your middle gear and use the barrel adjuster on the derailleur to align the jockey wheel over the appropriate cog of the cassette. You should be all set!

i hope this helps
-matthew

Nov 12, 2009 | Cycling

1 Answer

Chain coming off fron gear when coasting or trying to pedal backwards? Local bike repair shop indicated that a bearing maybe shot but that they couldn't replace the front gear unit.


Oh, it is too bad you are in the Bronx. i'd have that fixed right quick. There are probably a pair of culprits at work here. One, your derailleurs no doubt need adjustment. Two, your rear derailleur hanger may be bent. These two can both cause the problem. Start with the rear hanger, because that will be easier to see.
Flip the bike onto the bars and saddle and take a look at your rear derailleur. Is it going straight up and down and is it aiming straight with your frame? If it isn't, you have found your problem. The hanger needs to be straightened. This can be done without any tools if you have a good eye. Hold the derailleur by the body and bend it to make the alignment good with the cassette. If this is NOT the problem (but i really think it is) then here is a walk-through on adjusting your derailleurs and hopefully this will solve 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 16, 2009 | 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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