Why does my bike chain keep jumping?

Most of the time, a skipping chain is caused by cable stretch. In the first half dozen rides on a new bike your shift cables stretch the most. They can also stretch over time as you ride. … Shift down into the smallest ring in the rear cassette again, and press your shifter again to see if the bike shifts properly.

How do you fix ghost shifting?

Neil is right, most all “auto shifting” or “ghost shifting” is the result of cable-tension problems. If the cable is a bit loose, the derailleur will try to shift “up” to a smaller cog. If too tight, it will try to catch the next larger cog.

Why does my chain come off when I pedal backwards?

If it has a derailleur your gears need adjusting. We properly adjusted shifting system will allow you to pedal backwards without the chain coming off. Something could be bent, like the derailleur hanger or the derailleur itself. If it’s a singlespeed, this means the chain is out of alignment with the two sprockets.

How do you tighten a loose chain on a bike?

How to Tighten a Bike Chain

  1. Loosen your tire. Loosen the bolts that hold your rear tire.
  2. Pull back the tire. Move the tire back until the chain starts to tighten.
  3. Find the appropriate tension.
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How often should I change my bike chain?

To avoid this accelerated wear of your cassette and chainrings, a general rule of thumb is to replace your bike’s chain every 2,000 miles. Mind you, this is just a starting point. No two chains will wear at exactly the same rate because no two riders treat their chains the same.

Can you use WD40 on bike chains?

Can I use WD-40 to lube my bicycle chain? No. You should never use WD40 as chain lubricant since WD-40 is NOT a true lubricant since it’s primary use is as a solvent or rust dissolver.

What is a ghost shift?

True “ghost shifting” is when the bike shifts perfectly in the repair stand (thus eliminating bent der hangs, stretched cables, etc etc) but shifts on its own while under riding loads.

How do you stop phantom shifting?

To solve cable stretch, you have to add tension to your cables.” To fix a skip in the rear derailleur, shift your chain into the smallest ring on your rear cassette (the hardest gear) and the middle or larger ring on your front derailleur. Press your shifter once.

How do you clean a bicycle chain?

  1. With chain on bike wipe off external dirt with a rag.
  2. If really dirty run through a chain cleaner with degreaser.
  3. Take chain off bike and immerse in a jar of methelated spirits and shake for a few minutes. …
  4. Immerse chain in bath of melted paraffin (candle) wax. …
  5. Hang to dry and put back on bike.


Is it bad to pedal backwards?

It might sound a bit, um, contrary, but the research team says that pedaling backward could be beneficial for cyclists, changing the way the leg muscles are stimulated just as marathoners benefit from working sprints into training sessions and weight lifters benefit from minute changes in barbell grip.

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