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Questions and answers about sports

What are the most common causes for hysteresis in the rear derailler?

6 min read

Asked by: Jasmine Jones

Why is my derailleur not shifting down?

If derailleur does not succeed in shifting the chain into the next largest ring or hesitates, add cable tension. Once you get to the largest cog, shift back into the smallest rings. If there is any hesitation or the chain will not shift back into the smaller rings, remove cable tension until the shift is successful.

Why is my rear derailleur loose?

Likely the issue is either a bent derailleur hanger or the low limit screw needs to be adjusted. First, try to wiggle the cassette, then the derailleur and hanger to make sure everything is tight.

Why does my bike shift gears on its own?

When your bike chain skips between gears while you’re riding, or shifts twice instead of once when you try to change gears, the most common culprit is a loose cable. Your bike cables naturally stretch over time.

Why won’t my rear derailleur shift up?

Turn the barrel adjuster counter-clockwise if the chain won’t shift up to the larger cog. If you’ve turned the barrel adjuster more than a full turn and it hasn’t solved the problem, you may need to adjust the cable tension near the rear derailleur itself by loosening the cable anchor so you can pull the cable tight.

How do I make my bike shift smoother?

Quote from video: So I'm applying a little bit of pressure to that shift lever. And then when I squeeze that clutch in as I roll off the throttle.

What does the B screw do on a rear derailleur?

The B-gap or B-tension screw is located at the very back of your derailleur. It pushes against a tab on your frame’s derailleur hanger, allowing you to adjust the distance between your rear derailleur’s top pulley and the cassette.

Should a rear derailleur move on the hanger?

Most derailleurs are expected to rotate at the derailleur hanger bolt. This is to simplify rear wheel removal and installation as the derailleur can be moved away from the wheel path by hand.

Why is my derailleur hitting my cassette?

When the spring breaks or wears down, the derailleur becomes “weak”, and the chain pulls it forward too much. In some cases, the derailleur assumes an awkward position causing rubbing against the cassette. If you have a bad derailleur spring, the solution is to replace it or buy a new derailleur.

How do I know if I need a new rear derailleur?

If there’s play, get a new one. Also, drip some Tri-Flow or something into all the pivots. If it’s really dirty and sticky, it’ll have a harder time with the shift you describe. If with clean, lubricated pivots the derailleur still won’t move well, you probably need a new one.

Why does my bike skips when I pedal hard?

These include worn out or misaligned derailleur pulleys, old or malfunctioning shifters throwing off the indexing in some gears, or broken/bent teeth on one or more cassette cogs. Build up of dirt and grime on drivetrain components will also cause shifting issues, including skipping chains.

How long does a rear derailleur 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

Why are my bike gears clunky?

In most cases, the bicycle clunks when shifting due to a loose part in the cassette, freewheel, or rear derailleur, it can be due to loose cables, and sometimes the front derailleur might be at fault.

How do I change my gear 1 to 2 smoothly on my bike?

To do this, use the same process of shifting into first gear. Throttle the engine and push the gear shift upwards with your toe. Pushing it one click will move it to 2nd gear, giving it another gear will move it to 3rd, and so on. Downshift into lower gears.

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.

Should you stop pedal while changing gears?

While you are shifting gears, you must keep pedaling in order for the chain to move from one gear to the next. When you’re in a particular gear and pedaling, the chain is pulling on the teeth of that gear.

How do you fix gears not shifting?

Quote from video: If they can't push the chain over of the smallest chainring. The most likely causes are that the limiting screw is preventing the case moving over farther in case.

How do I know if my derailleur is bent?

Quote from video: When we're trying to shift. Down becomes quite erratic or vice-versa. The key is to look at the rear derailleur we can see it's bent slightly inward.

How do I know if my rear derailleur is 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.

Why is my motorcycle not shifting properly?

A motorcycle will not shift properly if there is improper chain tension, low clutch fluid, too much slack on the clutch cable, and/or the clutch is worn-out. If one of any of these things are present, the rider’s ability to control a motorcycle’s inputs will diminish, and the safety of the rider will be sacrificed.

Can chain tension affect shifting?

Intro. A loose bike chain can cause poor shifting, chain skipping, chain dropping, or accelerated drivetrain wear. Luckily it is usually an easy fix! To find out whether your chain is too long take a look at it from the side with your eyes being level with the chain.

Why does my motorcycle shift so hard into first?

There may be cases where the shift lever becomes hard and shifting the bike into gear becomes difficult. This is generally seen when the bike is cold. The cause is the clutch cable here. You need to readjust it by loosening the locking adjustment and then working the clutch lever a few times.