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Believe it or not, it’s not difficult to replace the rear derailleur yourself. Before replacing a “bent derailleur” make sure it’s not just the derailleur hanger! First, remove the idler pulley — that’s the bottom pulley of the derailleur.If you take your MTB into a local bike shop the average price to replace a rear derailleur is going to be $110. If you DIY replacing a derailleur will cost about $50 (plus your time) This price will depend a lot on the actual derailleur needed. Usually a bike shop will also take care of other problems.Derailleurs will last almost indefinitely. The jockey wheels will wear out in time (tens of thousands of km) but the rest of the mechanism shouldn’t see significant wear. It could be that the spring will break at some point due to material fatigue, but that is also a relatively easy to replace part on most derailleurs.
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How much does it cost to replace a rear derailleur?
If you take your MTB into a local bike shop the average price to replace a rear derailleur is going to be $110. If you DIY replacing a derailleur will cost about $50 (plus your time) This price will depend a lot on the actual derailleur needed. Usually a bike shop will also take care of other problems.
Do I need to replace rear derailleur?
Derailleurs will last almost indefinitely. The jockey wheels will wear out in time (tens of thousands of km) but the rest of the mechanism shouldn’t see significant wear. It could be that the spring will break at some point due to material fatigue, but that is also a relatively easy to replace part on most derailleurs.
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Can you change derailleur?
Rear Derailleur Removal
Now you’ll need to remove the chain from the derailleur. Some chains have a special connector pin that need replacing if removed, so if you don’t need to remove the chain for cleaning or replacement you can simply remove the lower jockey wheel and rotate the cage plate to release the chain.
What causes a rear derailleur to break?
If your chain is too long, and you are in the ‘small-small’ combination, it is possible for the derailleur to sort of fold up on itself. Flip your bike over and put it in the smallest gear up front and the smallest gear in the rear and make sure the chain isn’t rubbing on the derailleur.
Will any derailleur fit my bike?
A derailleur for your mountain bike should match the specifications on the original derailleur. That is, while it doesn’t need to be the same model of derailleur, it does need to be the same brand, in almost every case. It also needs to match the number of gears, or have more intended.
How do I know what derailleur I need?
If you are replacing an existing derailleur on a bike, simply count the number of cogs on your cassette and you’re good to go. If your drivetrain’s speed is an unknown quantity, you can count the number of steps that your shifter runs through and add ‘one’ to determine the number of gears your drivetrain has.
How do I know if my rear derailleur is worn out?
Worn Derailleur
All derailleurs wear out at some point. Check for wear by pulling laterally on the lower cage. Compare this movement in the linkage of a new derailleur. Sloppy pivot and linkages will produce inconsistent shifting, and the only solution is a new derailleur.
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Can you mix SRAM and Shimano?
SRAM’s cassettes and chains are compatible with all of Shimano’s groupsets, and vice versa. Likewise, Shimano and SRAM buyers have the freedom to mix different levels of chains and cassettes so long as they are designed for the same kind of transmission.
Why is my derailleur clicking?
If you hear a constant clicking (especially in certain gears), it could mean that your shifter cables have stretched enough to pull your derailleur out of alignment, causing your chain to ride between gears or rub on the derailleur cage. First, make sure your derailleur is aligned and that the hanger isn’t bent.
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Do derailleur springs wear out?
That said, derailleur springs will lose tension overtime, and pivots will get sloppier. Shifters can wear out too (if you ride enough), and most cannot be serviced back to health. But before you go sinking money into these more expensive components, best try a new cable/housing or get a second opinion.
What is a rear derailleur?
The rear derailleur is the mechanism that shifts the chain at the rear sprockets. There are many different models but they all share the same basic design and functionality. Derailleurs are secured to the bike with a mounting bolt to the frame’s derailleur hanger.
Do you need a derailleur hanger?
Carrying a spare derailleur hanger will help you when you’re at a loose end. You wouldn’t think a derailleur hanger would be such a crucial and essential part on a bike. Not many people know how important they actually are, but they help protect your bike frame from being damaged by snapping.
How do you know if you have a bent derailleur hanger?
Rotate the arm of the alignment tool to the 12 o’clock position (pointing straight up). If your hanger is straight, the gauge arm should sit in the same position relative to the rim. If it’s not straight, this will indicate the direction in which the hanger is bent.
When should a derailleur hanger be replaced?
If your derailleur takes a hit during your ride, the derailleur hanger is there to absorb the impact. If the hanger gets damaged or bent, you’ll need to replace it.
Does a bent derailleur hanger affect gear changes?
You can certainly ride your bike with a bent hanger, but shifting will be suboptimal and there is a risk of further damage to the bike. At the very least, you will have drivetrain noise in some gears, or your chain will skip in certain gears or shift more than one gear at once.
Which bike derailleur is best?
- 3. Box One Prime rear derailleur. …
- SRAM Eagle AXS X01 rear derailleur. …
- Shimano GRX rear derailleur. …
- Shimano XT Di2 M8050 rear derailleur. …
- Shimano Alivio M3100 rear derailleur. …
- Shimano ZEE RD-M640 Shadow Plus Rear Derailleur. …
- Microshift Acolyte 8-Speed Rear Derailleur.
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Can you use a 9 speed derailleur on a 7 speed bike?
You’ll be fine. I had a Deore 9-speed rear derailleur with a no-name Shimano 7-speed cassette and worked fine. The only thing is that you may need a bit more adjustment on the derailleur for the first setup because of the change.
Can I use 12 speed derailleur with 11 speed cassette?
So there you go folks, there is no difference in indexing spacing between 11 and 12 speed, the difference is all at the derailleur end. So you can’t use a 12 speed derailleur on an 11 speed setup or vice versa but you can you an xtr 12/11 speed shifter on an 11 speed drivetrain.
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