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Questions and answers about sports

Should I replace the bent Derailleur hanger?

5 min read

Asked by: Amy King

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.

What do you do for a bent derailleur?

Quote from video: So if you don't have any the correct tool to do it you can use a crescent wrench. And I will put the crescent wrench right there in the very bottom as high up as you can get on this jockey pulley set.

Can you fix a bent derailleur hanger?

Quote from video: If you really had to is pop an adjustable spanner onto. The hanger like that and from the back of the bike. You could eye up the straightness of that and again I said if it was a badly bent hanger you

How much does it cost to fix a bent derailleur?

There can be a range of prices for replacement derailleurs, starting around $20 and going all the way up to $700.

What happens if derailleur hanger is bent?

What happens when a derailleur hanger is bent? A perfectly straight derailleur hanger should always be at a right angle to the rear axle when observed from the rear of the bike. When a derailleur hanger is bent it is said to be “out of alignment”. A misaligned hanger results in poor shifting.

How do you diagnose 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 I replace my bike 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.
Apr 11, 2014

Is my derailleur worn out?

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.
Jul 29, 2017

How do you straighten rear derailleur?

Quote from video: It could be a t30 Torx wrench so shift down into the smallest cog. And then loosen the bolt. Inside. So as we're doing this you can just let the derailleur.

How do you fix a bent derailleur cage?

Quote from video: If you've got a sram derailleur you can use the cage lock on there remove the derailleur. And then we're gonna go and find a tree stump something like that it's a bit flat i can use to my advantage.

What causes a rear derailleur hanger to bend?

A common cause of a misaligned hanger is from the bike falling over to the right side. This pushes the derailleur body inward, bending the hanger. It is often possible to repeatedly re-bend many derailleur hangers. This is because there is very little stress from riding the bike or shifting gears.
Aug 30, 2015

How long do rear derailleurs last?

Good quality rear derailleur can last between 3 to 5 years, when unbranded or low-quality ones can last for 2 years, no matter what the durability of the rear derailleur the jockey wheel will wear after time and it can be replaced very cheaply with new ones, on the other hand, front derailleur can last almost

How much does a rear derailleur hanger cost?

The typical price of a derailleur hanger varies, but budget for around $30 usd.

Are rear derailleur hangers universal?

SRAM has introduced a Universal Derailleur Hanger concept, and word is Trek and other major brands are on board. The idea is simple: Create a single hanger design that works on any bike for any derailleur. In reality, the mounting point and shape for the derailleur interface has been standard forever.
Sep 10, 2019

How do you use a derailleur hanger straightener?

How To Replace A Bent Derailleur Hanger

Can you fix a bent derailleur cage?

Quote from video: If you've got a sram derailleur you can use the cage lock on there remove the derailleur. And then we're gonna go and find a tree stump something like that it's a bit flat i can use to my advantage.

How do you fix a bent gear shift on a bike?

Quote from video: So just wiggled on the um the lever. And put the bolt through and found out i had to whack. The kind of c nut back into shape just to be able to for the bolt.

How do you straighten a derailleur hanger without tools?

Quote from video: So you would just have to kind of bend it and try to straighten it as best you can and once you kind of get it to where you think it's straight then you can go ahead and remount the wheel the proper

Why does my derailleur keep bending?

A misaligned derailleur hanger will often result in poor shifting performance. A common cause of a misaligned hanger is from the bike falling over to the right side. This pushes the derailleur body inward, bending the hanger. It is often possible to repeatedly re-bend many derailleur hangers.
Aug 30, 2015

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.
Jul 29, 2017

What causes a rear derailleur hanger to break?

Some common reasons for it breaking are: Hitting an obstacle (e.g. tree branch) Going into the spokes (badly set low limit screw or the derailleur was wobbling enough for some reason to get caught in the spokes) Chain too short.
Oct 26, 2014