Basically he didn't know. Pook Full Member. Sometimes years. Posted 11 years ago. LOLs Teh Tunstall. Surf-Mat Free Member.
Replaced the jockey wheels on the x-9 on my newer Stumpy but it does much higher mileage. A lot. Good grief, we will be discussing MTBF numbers next…. Christ, the hours must have flown by. I've had a jockey wheel last hours destroyed the bearings in one at 10UTB but as for mechs themselves if you don't break them they last years of normal riding Posted 11 years ago. I have an old STX in the spares box, spring seems a little baggy but it still works, that's about 15 years old, not constantly in service but probably used for about 10 years total, so far… Posted 11 years ago.
Mountain bike drivetrains like any other drivetrains get worn after time causing bad shifting and low pedaling efficiency.
For better servicing and bike health insurance knowing your drivetrain how much does it really last is important. So in this article we will try to answer this question with exact numbers or at least with the most agreeable range. Mostly, mountain bike drivetrain can last up to km before it gets one replacement cycle, drivetrain components vary in life span, the chain is the fastest worn part followed by cassette and chainrings, the chain should be replaced when it reaches 0.
Road bike groupsets are often proven to last longer than mountain bike groupsets from the same level. This is logical, harsh external riding conditions like mud, dirt, gravel, will accelerate drivetrain components wear on mountain bikes.
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 indefinitely.
As a result, the rear derailleur gets contaminated very quickly. The effect is accelerated during winter when the roads are covered with sand, salt, and various anti-freezing compounds which have a corrosive effect on some materials.
A derailleur consistently exposed to water, grit, salt, and sand will have a shorter lifespan than one ridden in sunny conditions. A cheap but otherwise functional bike e. Even with lower-end components e. Some cities have too many hills to cover the distance without gearing. Cleaning the derailleur after every winter ride will prevent a lot of damage and prolong the life of the component. The WD will create a layer of protection reducing the chances of corrosion. It will also lubricate the mechanical components of the derailleur.
If you want even more lubrication, you can put a few drops of the oil that you lube your chain with on the pivots of the derailleur. The company Lizard Skins offers a derailleur boot named Grunge Guard. It covers the entire derailleur apart from the lower pulley and protects the mech from impurities. A while back, I bent the cage of my Shimano Altus rear derailleur. I re-bent it back by hand, and it began shifting accurately again.
I am still running this derailleur on my bike. But if you have a high-end derailleur that costs a lot of money, it will be worth it to put more effort into repairing the damaged component. The rear derailleur is naturally associated with shifting problems at the back, but in a surprising number of cases, the culprit is found elsewhere. If you are experiencing inaccurate shifting, and the derailleur looks fine straight , the sources of the issue could be:. If the derailleur hanger is bent, it will cause funny shifting even if the derailleur itself is in perfect condition.
Cyclists often buy new derailleurs and talk about how great they are in comparison to the old ones. Ironically, a lot of the improvement often comes from the new cable accompanying the upgraded derailleur rather than the mech itself.
A worn cassette or freewheel can cause serious gear slipping, especially when combined with a new chain. If the derailleur hanger is fine, the next step to fixing slipping gears would be to change the cassette or freewheel as well as the chain. If the shifter is contaminated, it can cause shifting problems.
Save my name, email, and website in this browser for the next time I comment. Skip to content Post author: B. Shimano Altus RD-M This is the lower jockey wheel of my Shimano Altus. This system is super simple, effective, and does not require a lot of maintenance.
Hence why you find it on lower-end derailleurs. Tags: derailleurs.
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