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How to reattach rear derailleur on 26" trail runner

My bike was returned to me in pieces. Not sure of placement

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

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Posted on Jan 02, 2017

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chris

  • 232 Answers

SOURCE: rear brake light stays illuminated on my trail bike

you will have to check the switch which should be situated at the back of the pedal . the switch may be over tight and causing the light to come on .
Check also that the wiring may be swapped as the tail light may be using the brake lightbulb .

Posted on Oct 13, 2009

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Anonymous

  • 484 Answers

SOURCE: Need to replace a Shimano 7 speed SIS rear

Go to parktool.com/repair for pretty great step-by-step instructions with diagrams and pictures on the procedure. It would be easier to see than to try to tell.

i hope this helps you out,
matthew

Posted on Oct 23, 2009

dunnbiker

David Dunn

  • 8546 Answers

SOURCE: Campagnolo Record 10 sp. short cage rear drlr.+ 13-26 cassette

You don't say if this happens in the BIG ring, small ring or both. If it's just the big ring I'd suspect there isn't enough chain length.

Cross chaining is unnecessary and bad for your drivetrain. I never go more than one cog past the center of my cassette opposite the chainring I use.

http://www.parktool.com/repair/readhowto.asp?id=26

Posted on May 02, 2010

Mary Dunn

  • 1788 Answers

SOURCE: I need to buy a Shimano RD-TZ30 bike rear

Go to your local bike store, they sell Shimano and as long as it will accomodate your cog you are set.

Posted on Oct 05, 2010

Coachphil

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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1 Answer

What is a decent replacement rear derailleur for a Mongoose 26" Ledge 2.1 Mountain Bike?


Get the kind that has a lever shift instead of the grip shifter. The plastic part that holds the spring breaks easily. The lever shifter has been going strong on my bike for 6 years without a problem

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I want to replace the derailleur what should i get


Any Shimano rear derailleur that is specific to the amount of cogs you have in the rear will work. Alivio is the entry into the nicer derailleurs. The more money you spend, the nicer they get: lighter, more machining, a more precise fit of parts.

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Brand new bike gears won't engage. The gear shift is on 6 and the chain is on the smallest cranks.


the derailleur cable is too loose. Shift the shifter into the smallest cog, make sure the chain is on the smallest cog. The derailleur cable will most likely be very slack now. At the rear derailleur, there will be a nut or a allen bolt pinching the cable to the derailleur. loosen this, pull the cable finger tight, tighten the nut or bolt again and then try shifting again. You can dial it in using the barrel adjuster on the derailleur or the shifter.

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The chain is broken off the bike We bought a new one but need a diagram of how to weave the chain through Thanks


The chain goes from the top of the front sprocket to the top of the rear sprockets, between the rear sprocket and the top derailleur wheel and then between the upper and lower derailleur wheels. It then goes forward toward the front sprocket. The text sketch below shows the rear sprocket, chain and derailleur.I hope this helps.


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1 Answer

My chain slipped, the part attached near the back wheel... "the two small wheels that rotates the chain I believe that it shifts the gears" it has fallen off and bent doing the time it was...


Ask a local Bike Shop. Derailleurs for that bike are cheap. Evaluating the bike for a bent derailleur hanger and fixing it is a job for the pros. Word to the wise. Never pedal backward or roll the bicycle backward if it is the rear derailleur is not precisely aligned with a gear. It WILL rip bend or the derailleur right off.

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Rear derailluer bolt missing how and where do i reattach it?


Depends on which bolt is missing and what derailleur your referencing.

If you no longer have the bolt then I would suggest taking the bike or derailleur into a bike shop and have them provide the proper bolt to complete your derailleur. They can also advise for your specific derailleur how to reattach. Not all derailleurs work the same.

Apr 07, 2011 | Cycling

1 Answer

I am trying to fix a Huffy Blackwater bicycle (15 speed). The rear derailleur is missing. Can I use a 6 speed derailleur from a Next bike? Can I disable the indexing of the Huffy (Falcon) shifter? Thanks


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.

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1 Answer

Problem with chain and gears


Wash, degrease and scrub the chain and derailleurs with a good degreaser (like Simple Green). Dry the chain and relubricate it with an appropriate bike chain lubricant (not oil or WD-40). Shift the derailleurs to the smallest chain ring and cog on the cassette (low front gear, high rear gear) and then loosen the cable at the derailleurs, pull the cables taut and reattach them. If the derailleurs still need adjustment, here is a procedure for it:
Flip the bike over (so you can pedal the bike manually while you shift) and shift the front to the middle chain ring. Shift the rear to the highest gear (small cog). Release the cable from the pinch bolt on the derailleur. Adjust the screw marked "H" on the derailleur until the jockey wheel on the derailleur is aligned perfectly over the small cassette cog. Set the cable adjuster on the derailleur to the middle of its range (find this by screwing it all the way in and then count how many revolutions it makes until it screws out completely. Screw it back in one half of the total revolutions). Reattach the cable and shift to the lowest gear (the biggest cog). Over-shift and hold on the shifter, then adjust the "L" screw on the derailleur until the jockey wheel sits just past the last cog. You have to hold the shifter to do this. Now shift into the middle gear (or one of the two middle gears if the bike has an even number of gears) and adjust the derailleur using the barrel adjuster you previously set to the middle of its range. Adjust it so that the derailleur is sitting perfectly over the appropriate gear. Shift up and down the cassette while pedaling and in every gear, reverse pedal (freewheel) to make sure the chain does not hop. Adjust as necessary until all gears are smooth.
Now the front:
Set the rear derailleur to the lowest gear (big cog) and the front to the lowest gear (small chain ring). Disconnect the derailleur cable. Screw in the adjuster for the cable tension all the way (this adjuster is on the shifter of a mountain bike or the down tube of a road bike). Pedal to make sure the chain is not rubbing on the derailleur cage. If it is, adjust the "L" setting on the derailleur until the chain moves by without touching the cage. Now pull taut and reattch the cable and shift the front to the big ring while pedaling. If it does not shift up well or completely, hold the shifter past its normal shift and adjust the "H" screw so that the derailleur allows the shift. Shift into the highest cassette gear and keep pedaling. The chain should not be touching the front derailleur's cage when you pedal. Adjust with the barrel adjuster until the chain moves freely without touching the derailleur cage.
That should be it, unless there is another mechanical problem causing the missed shifts, like a bent derailleur hanger or damaged teeth on the cassette cogs or a bad derailleur. If it is still problematic, come back for further information.

i hope this helps
-matthew

Oct 26, 2009 | Cycling

1 Answer

Mountain bike advise


sounds like a pretty good bike for what you will be using it for

Oct 22, 2009 | Cycling

1 Answer

Where can I find a drawing of a 21 speed 26" mongoose duel supp rear deralier so I can see how the cable runs?


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FZR 400R Deltabox Exup. wont idle properly Howzit everyone. I have a "small" issue with my FZR 400R Deltabox Exup. So it doesn't want to idle properly(the moment I reduce the idle speed to any point below 3000rpm it continues to drop and dies) and also revving the bike it bogs around 6000rpm doesn't go any higher. When restricting the airflow through the airbox it revs better(all the way to 14k rpm) but still doesn't want to idle as the revs then hang on it's way down. I suspected this was all caused by an air leak somewhere, sprayed some quick start on the boots between the carbs and the intake as well as between the airbox and the carbs with no jump in the revs. Nevertheless I sealed the boots just to make sure they aren't the problem. I then stripped the carb and cleaned it properly, put everything back together, sorted out their syncing and reset the mixture screws to 3.5 turns out(which sounds a bit far out, but thats what the manual said-since then I've tried everything from 0.5 to 4 turns out with no significant effect). Then the cylinder started acting up(not firings- a different cylinder about every third time the bike was started) I then replaced the spark plugs with new ones(NGK cr9ek as per the manual) after that cylinder 1,2 and 3 was firing, but 4 was still dead. I Replaced the coil, leads and caps, still not firing. I checked the compression, which was fine, I checked the valve clearance (cylinder 4 the one intake valve was way out of spec, so i replaced the shim), still not firing. I've got no idea what else could be the problem or what to check next. PS. When i pulled the spark plugs(both new and old) they where burnt black so I'm not sure if my jetting could be out of spec perhaps?

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