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.
Is Shimano Deore XT the same as XT?
Deore XT carries the big advantage of having the Shadow Plus technology (link), unlike the Deore which in the best case has the Shadow compact design. Simply put, the XT works faster, more accurately, more silently and doesn’t need regular service for adjustement.
Which pulley is which on rear derailleur?
Rear derailleurs use a cage fitted with two pulleys. The lower pulley pulls backwards to give tension to the lower section of chain. It is called the tension pulley, or ‘T’ pulley for short. The upper pulley guides the chain to the sprockets.
How do you change a Shimano derailleur pulley?
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.
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.
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.”
Is XT better than XTR?
The XTR brakes are said to be better, as what most bikers claim. They seem to give more stopping power compared to the XT version. The only downside however is, you got it ‘“ the pricey cost. In terms of the shifters and derailleur at the rear, the XTR class is said to be a lot smoother than the XT.
Is XT worth it over SLX?
Compared to the SLX, the new XT feels more crisp and of slightly more high-end quality. However, the price will show if it’s really worth the upgrade. On a purely functional basis, there is little to complain about on the entry-level groupset.
Which pulley is the guide pulley?
The upper jockey wheel, also known as the guide pulley, is the one that is in charge of shifting duties. It quite literally guides the chain in the direction that it needs to go when the derailleur makes a shift.
Does guide pulley go at top or bottom?
Registered. The ‘G’ or guide pulley, sometimes called the centeron pulley goes in the top position closest to the cassette. Most can go either way around but some have a certain direction of rotation, if that’s the case with yours they will have a direction arrow on them.
How do you remove a rear derailleur pulley?
Ask a Mechanic: Servicing Rear Derailleur Pulleys – YouTube
Which pulley turns faster?
What is the advantage of oversize pulley?
‘As friction is created through chain plates sliding back and forth when articulating, there is less friction created when the chain moves less. Additionally a larger pulley wheel rotates slower than a smaller wheel, reducing bearing speed and therefore bearing friction.
Is oversize pulley worth it?
But oversize pulley wheels actually offer enough of an advantage in wattage savings that it may be worth sacrificing style. The big idea here is to reduce friction in the drivetrain. Fewer watts wasted as you pedal mean more efficiency and speed.
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.
Is SLX as good as XT?
The Shimano SLX components are based on the XT line but are designed in a way that allows them to be manufactured cheaper and, thus, sold at a lower price point. It would be wrong to call these components “budget” components because they still work quite well, but essentially, that is what they are.
What does Shimano XTR stand for?
The “R” in XTR stands for Racing. XTR continues to evolve as the flagship mountain bike components series under the concept of Shimano Total Integration (STI), which is the concept of systematically integrating technologies of individual functional components and thereby offering further value as a system.
Which jockey wheel is the guide pulley?
upper jockey wheel
The upper jockey wheel, also known as the guide pulley, is the one that is in charge of shifting duties. It quite literally guides the chain in the direction that it needs to go when the derailleur makes a shift.
Do you grease derailleur pulleys?
Yes, the pulleys of your rear derailleur can easily be removed, cleaned, greased, and re-lubricated. I’d recommend doing so about every 500 miles depending on your climate or whenever they start to sound gritty again.
What happens when you increase pulley size?
Does a bigger pulley make it easier?
A larger diameter pulley wheel (aka sheave) is technically more efficient than a smaller diameter pulley. But it’s a trade off: a larger pulley has increased bulk, weight and cost. For example, in a 1:1 haul, you gain about 7% efficiency going from a 1.5” pulley to a 3.75” pulley.
What are oversized derailleur pulleys for?
Kogel: The main goal for an oversized derailleur cage is to reduce drivetrain friction. Larger wheels require the chain to articulate less. Bending a chain causes friction between the plates. By making the wheels larger the chain needs to bend less every time it runs through the derailleur.
Do pro cyclists use oversized pulleys?
What do oversized derailleur pulleys do?