Question about Mongoose 26" Ledge 2.1 Mens Mountain Bike

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I want to replace the derailleur what should i get

I want to know what part to get with a shimanno derailleur

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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.

Posted on Apr 07, 2014

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Posted on Jan 02, 2017

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Chain intermittently slips in all gears. Is there an adjustment


Mark:

First of all, make sure that you are not over or under shifting. The chain has to be positioned exactly over the gear that you are trying to use. If you hear derailleur or chain noise The derailleur is not "in gear" and you have to adjust your shifter to eliminate noise. The derailleur must be adjusted so that the chain is parallel to the gear cluster in each gear. If the chain is twisted at all, it will skip gears. Check your rear derailleur to ensure it is pointing the chain directly at the front gear cluster. Check the front derailleur to see that it is pointing the chain directly at the rear derailleur. While you are at it... clean the derailleurs with alcohol and lube them with a light weight oil. Check the derailleur stops (small screws next to the cable clamp on the derailleur). Have the bikes rear tire off of the ground and pedal the bike with one hand while shifting with the other hand and you can see what the derailleur is doing. adjust the stops so that you can not shift the chain off of the gear cluster in high or low gear. You may have to adjust the cable length at the derailleur cable clamp, and at the adjusters on the shifter to get the exact adjustment that you want. It will take some time to properly adjust your derailleurs, but it is worth it when you can ride without your derailleurs acting up.

Jun 15, 2015 | Cycling

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

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

Mongoose 21speed spear derailer is bent. bought at yard sale 60.00 dont want to put much money into. what is the best way to fix this. how much? Want to use as spare bike. it is rideable but how long....


A new Rear Derailleur may cost more than you paid for the bike. But is IT bent or is it the derailleur hanger?

http://www.parktool.com/blog/repair-help/rear-derailleur-hanger-alignment

Search the web for "fix bent derailleur"

Steel frames can be re-formed but not most other materials.

Someone in your club should know how to deal with it and maybe even have an old derailleur hanging around.

Jun 30, 2011 | Cycling

2 Answers

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

Where can i get replacement front derailleur? or specs sheet ?thanks peter


The documentation I found says the Front derailleur is a Falcon MF 31 T.

But there's more that needs to be known about it.

It appears to be a Top Pull, meaning the cable approaches it from above and the 31T means it works with a front chainring of 31 teeth.

We need to determine the exact outside diameter (to the .1 mm) of the seat tube as the clamp must be precisely fitted. Typical measurements look like 28.6 mm or 31-1/8".

Once you know that you can go anywhere (eBay, for example) and order the same pos derailleur or upgrade to a Shimano Deore or above mountain derailleur.

Google this but keep in mind you still need to specify the clamp size
"shimano front derailleur top pull 31"





Feb 20, 2011 | GMC Topkick Dualsuspension Mountain Bike...

1 Answer

Need pulleys for my TD One derailleur


There are no pulleys on the front derailleur. Only the Rear derailleur has pulleys.

The Front derailleur consists of two plates that work the front gears (chainrings)

The Rear derailleur consists of a long arm with 2 pulleys to wrap the chain while shifting the rear gears (cassette).

Pulleys range from $10- a pair to $75-. Your local bike shop should have a suitable replacement set of pulleys, depending on the model of your derailleur it is sometimes less expensive to just replace the whole unit.

Dec 09, 2010 | Mountain Td-one Bicycle Front Derailleur...

1 Answer

Broken cable. Need new one, And manual instruction to put it back on.


There are 2 main types of cables on your bicycle, Derailleur and Brake, and two of each of those.

The derailleur cable controls either the front or rear derailleur (gear changer),

The brake cable controls either the front or rear brake.

There are many different types of bicycles and controlling mechanisms. Manuals are available from the individual component companies (ex. A shimano derailleur manual, can be found at www.shimano.com) but you need to know the model of that companies derailleur to get the correct manual. One other hindrance may be whether you have the correct tools, most derailleurs cables can install with basic tools such as allen wrenches and screwdrivers but brakes can require specialty tools.

I would recommend or suggest that you take the bike into your local bike shop and have them replace the cable quickly and properly. Since that is where you will have to buy the cable anyway, Many times these same bike shops have extra manuals laying around from new bike builds that will instruct you the basics of the components you are working on, just ask, They are free cause they throw them away anyway.

Dec 07, 2010 | Cycling

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

Adjusting front derailer


Typically adjusting the front derailleur is a matter of adjusting the two adjusting screws on the derailleur. So turn the bike upside down. It should sit on its seat and handle bars. Find the two adjusting screws one will prevent the derailleur from traveling too far out preventing the chain from coming off. The other screw prevents the derailleur from traveling too far in keeping the chain from falling off that way. Now once you have found the screws slowly start turning the pedals like it was being ridden. Move the derailleur out as far as it will go if you see the chain is about to come off adjust the screw. Do same for inside screw. Now move the back derailleur all the way in and retest front derailleur, repeater with rear derailleur all the was out. Hope that helps. Oh, the back derailleur adjusts same way.

Feb 27, 2009 | Shimano Brake Cables Atb Mountain Bike...

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