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Replace jockey on old XT RD-M750 or change out to RD-572?

5 min read

Asked by: Israel Davis

How do you change a Shimano derailleur pulley?

Quote from video: So I'm gonna start by removing the upper pulley or the guide pulley depending on what is on the side of your pulley wheel itself. So you simply hold the cage of the rear derailleur.

How do Shimano jockey wheels fit?

Quote from video: Through. Start screwing it in with your allen key if it doesn't grab on to the threads on the other side you may need to adjust the side of the met cage slightly.

Are all derailleur pulleys the same?

The pulleys that will actually fit on your derailleur are determined by the generation of your group set. This is a number stamped on every part and goes by a four digit number. For instance any number between 9100 and 9199 indicates the latest generation Dura Ace.

Are bigger jockey wheels better?

bigger jockey wheels will rotate with fewer rpm for a given cadence, so less wear and tear. bigger jockey wheels mean more teeth (bigger circumference), so less wear and tear.

Are all jockey wheels the same?

The most important one is the diameter of the jockey wheel. At ATE, we stock six different diameters. The 35mm, 42mm, 48mm, 48mm serrated, 60mm, and 63mm. So, for light weight trailers, a 35mm would be the best fit.

What does an oversize pulley do?

The biggest factor is the larger pulley wheels. The less amount a chain has to articulate as it engages and disengages the pulley wheels, the less friction is produced. The next thing is on the larger pulley wheels, the bearings spin slower so you don’t have as much drag there.”

Do worn jockey wheels make a difference?

While well-serviced jockey wheels can work for years, there will come a point when these workhorses will need to be replaced. If the teeth on your jockey wheels are heavily worn, then this can negatively affect the quality of your shifting as the teeth can fail to engage.

Does a bigger or smaller pulley increase speed?

Pulleys of Different or Same Size



If a smaller pulley turns a larger one, the larger one will turn slower, but with more power available at the shaft. If a bigger pulley turns a smaller one, the smaller one will turn much faster than the bigger one but with less power available at the shaft.

Are bigger pulleys better?

Pro road racers who use Berner’s uniquely oversized rear derailleur cages have sworn time and again that they reduce drivetrain friction thanks to their humongous 15-tooth pulleys.

Do you need longer chain for oversized pulley?

Oversized pulleys do not require a new chain – Since the added length in the chain is only about 2 teeth, typically you can run oversized pulleys without having to replace your chain. One nearly unavoidable downside of oversized derailleur cages remains the need for a longer chain.

Do you grease jockey wheels?

Oil the jockey wheels



Whether you’re replacing them or leaving the existing ones in place, your jockey wheels would probably appreciate a squirt of lube. Remember to use the lube appropriate to the seasonal conditions you’re likely to encounter.

How often should you change rear derailleur?

Once the chain wears “or stretches”, it starts wearing the cogs and you pretty much need to replace both to get shifting working again. If it’s been 6 months and you’ve been riding much at all, you should have replaced the chain at least once.

Are jockey wheels universal?

Quote from video: Похожие запросы

How do you install a RD pulley?

Quote from video: On your bolt you may find that if you stand directly above the rear derailleur go ahead and push. The pulley wheel.

How do you install Shimano pulley wheels?

Quote from video: Line up in the cage. And go ahead and replace the upper pulley bolt tightening to a firm but moderate tightness ensure the pulley free spins. And now we will repeat the process on the lower pulley.

Where does the tensioner pulley go on a derailleur?

Install the guide pulley so that the arrows are pointing counterclockwise when looking at the outer side of the derailleur. The tension pulley has an arrow on it to indicate the direction of rotation. Install the tension pulley so that the arrow is pointing clockwise when looking at the outer side of the derailleur.

How do I know if my jockey wheels are worn out?

You need to look at the teeth – if they are starting to look sharp or pointy, then they are worn and the jockey wheel should be replaced.

What does an oversize pulley do?

The biggest factor is the larger pulley wheels. The less amount a chain has to articulate as it engages and disengages the pulley wheels, the less friction is produced. The next thing is on the larger pulley wheels, the bearings spin slower so you don’t have as much drag there.”

Do jockey wheels make a difference?

While well-serviced jockey wheels can work for years, there will come a point when these workhorses will need to be replaced. If the teeth on your jockey wheels are heavily worn, then this can negatively affect the quality of your shifting as the teeth can fail to engage.