- Clamp Diameter or Interface. Front derailleurs can be mounted to a bicycle frame using one of three basic methods. ...
- Compatibility With Your Crankset. Front derailleurs are made to either work with double or triple chainring sets. ...
- Cable Pull Direction.
How do I know what derailleur I need?
When buying a new rear derailleur be sure to match it with your drivetrain ‘speed’ . 10-speed drivetrains use narrower chains than 9-speed so you’ll need a mech to match. Most rear mechs are made of a polymer and alloy mix but you’ll find carbon fibre in top-end models to shave even more weight.
How do I choose a bike derailleur?
Can you mix and match front derailleur?
Unless something is wrong with the old front derailleur, I’d keep it. Just clean it, lube it, etc. Yes, you can mix and match .
Do I need long or medium cage derailleur?
If you are in-between the capacity ranges of the two, which is often the case with mountain bikes, then note the following: long cage derailleurs will accommodate a wider gear range and deliver a better chain line, while medium cage derailleurs are less likely to be hit by rocks on the trail .
How do you measure a derailleur cage?
Will any derailleur fit my bike?
A derailleur for your mountain bike should match the specifications on the original derailleur . That is, while it doesn’t need to be the same model of derailleur, it does need to be the same brand, in almost every case. It also needs to match the number of gears, or have more intended.
Are front derailleurs universal?
It’s mounting method is quite similar to that of the low clamp, with 34.9mm diameter mounts the most common and smaller diameters often catered for by the use of shims. On some frames with a consistent seat tube diameter, the use of a high clamp or low clamp front derailleur is completely interchangeable .
How do I know if my derailleur is short or medium?
How do I choose a Shimano derailleur?
Can I use Shimano cassette with SRAM derailleur?
Buyers are free to use a SRAM chain and cassette with their Shimano groupset, and vice versa, just as a SRAM chain can be paired with a Shimano cassette, and vice versa. SRAM’s cassettes and chains are compatible with all of Shimano’s groupsets, and vice versa .
Can I use 11 speed derailleur with 9 speed cassette?
Hi is it possible to use an 11 speed derailleur with a 9 speed cassette? Yep with friction shifters it’ll be fine .
Are SRAM and Shimano front derailleurs compatible?
Yes, you can mix Shimano and SRAM front derailleurs and shifters . It’s the rear derailleur that is not cross compatible, with the exception that SRAM has made ‘Attack’ shifters that will work with the Shimano rear derailleurs.
How do you fix a Shimano front derailleur?
Does speed matter for front derailleur?
The number of rear speeds (the 9 in 2×9) marked for a front derailleur isn’t too important , but the cage of the derailleur may be thinner for higher number of rear speeds (so if your chain isn’t designed for high enough speeds, you may have some rubbing on the cage, especially if you don’t adjust it properly) — as ...
Which is better long cage or short cage derailleur?
It’s generally best to go for as short a derailleur cage as you can get away with, as long as you can avoid the chain contorting on the extremes of the cassette, such as using the largest on both sprocket and chainring. Smaller cages tend to have snappier gear changes, they’re lighter, and also less exposed to damage.
Are all front derailleurs the same?
Mounting. There are 5 different mounting types for front derailers, depending on the seat tube diameter of your frame , among other things: 1 1/8′′ (28.6 mm) clamp-on. (This is the traditional, standard type for most road bikes and older MTBs).
What is the difference between long and short cage derailleurs?
How do I know my Shimano model?
The model number is on the outboard plastic part of the shifter body which is revealed by pulling rear outboard part of the hoods forward .
Is my derailleur SS or GS?
The difference between SS and GS is technically as follows. To make it easy to remember, SS (short cage) is compatible with cross ratio road sprockets, while GS (medium cage) is compatible with wide ratio sprockets . Cross ratios, wide ratios, the world of gear ratios is a deep one.
How do I know if my SRAM derailleur is long cage?
There is a way. Sram derailleurs have a code stamped on the back side of the cage . It includes the month and year of manufacture and the “tooth count”. The tooth count looks like 23T (for a short cage).
Are derailleur hangers universal?
The Universal Hanger should be in everyone’s saddlebags . If your existing derailleur hanger busts, strips or is totally wonky, the Universal Hanger replaces the drive-side nut on your quick-release skewer so you can get the majority of your gear range back. Absolutely essential for touring or epic mountain biking.
Can I replace derailleur?
Can you mix and match Shimano components?
It is possible to mix and match as long as you get components from the same generation . For example: 9000 Dura Ace, 6800 Ultegra, and 5800 105 are all cross compatible. Each have 11-speeds in the rear, use the same cable pull per shift and use the same front derailleur design.
How do you install a front derailleur?
Can I use MTB front derailleur on road bike?
MTB vs road FD
Shimano road and MTB FDs have different cable pull ratio – that is the amount of FD movement for each mm of cable movement. This means that MTB FDs might not work well with indexed road shifters and vice versa .
