Can a double rear derailleur work?

Asked by: Jose Francois

Can I use an 8 speed derailleur on a 7 speed cassette?

You’ll be fine. There’s no “probably” about it. 6-, 7- and 8-speed gear is all cross-compatible in terms of chain width.

What is the max cassette for short cage derailleur?

The total capacity of a SS (short cage) Shimano derailleur is 35t and 39t for a GS (medium cage) derailleur.

Can I use 11 speed derailleur with 10 speed cassette?

No, that will not work. The shifts will not line up across the entire range, because an 11-speed cassette is not just a 10-speed cassette with an extra cog stuck on at the same spacing.

How do I know if my rear derailleur is worn out?

All derailleurs wear out at some point. Check for wear by pulling laterally on the lower cage. Compare this movement in the linkage of a new derailleur. Sloppy pivot and linkages will produce inconsistent shifting, and the only solution is a new derailleur.

Will a 9 speed rear derailleur work with 7 speed?

Can I use a 9-speed derailleur on a 7-speed cassette? The answer is yes because the rear shift ratio of 9-speed and 7-speed derailleurs is the same if you stay within the same brand.

Can I upgrade 8 speed to 9 speed cassette?

Since the 8-speed sprocket and the 9-speed sprocket are the exact same size, it is possible to convert to 9-speed without changing the wheel. Simply remove the current 8-speed cassette sprocket and replace it with a 9-speed cassette sprocket to convert to 9-speed.

Do I need a short or long 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.

Is an 11 34 cassette good for climbing?

All other things being equal, the 34T sprocket on the 11-34T cassette is going to give you the easiest gear. If your bike is currently fitted with an 11-28T cassette, switching to an 11-34T cassette will make climbing less of a struggle.

Do I need a new derailleur if I get a bigger cassette?

Derailleur Adjustments



When putting a big cassette, the derailleur jockey wheel it may not be able to be under that big cogs, therefore the shift can’t be made. For that, it requires to use a specific rear derailleur compatible with these big ratios and this can be expensive upgrade.

Can I use 11s Rd in 10s cassette?

Can An 11-speed Derailleur Work With a 10-speed Cassette and Shifter? Condensed Answer: Shimano’s 11-speed derailleurs have a different rear shift ratio than 10-speed derailleurs and are therefore not compatible with 10-speed indexed shifters.

Are Shimano 10 and 11 speed compatibility?

A 10-speed Shimano or SRAM cassette can still be fitted to an 11-speed body, but a spacer will be required to make up for the difference in width. There is another, more subtle, incompatibility that affects different brands of hubs and wheels, but it will only have an impact on those riders using multiple wheelsets.

Are 10 and 11 speed derailleurs the same?

the 10 speed and 11 speed derailleurs are interchangeable as far as the shifters go, the difference is that a 10 speed derailleur doesn’t like a cassette cog much bigger than the 36t it was designed for, where the 11 speed derailleurs are designed for 40 and 42t cogs, and seem to be able to handle bigger.

How long do rear derailleurs last?

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

Can you use a 9 speed derailleur on an 8 speed bike?

yes you can use the derailer on the 8 speed cassette. The major difference between 8 and 9 speed is indexing. So for an 9 speed cassette you would need 9 speed shifters.

Can I use a 10-speed derailleur on a 9 speed cassette?

Quote from video:

Will 8 speed shifters work with 7 speed cassette?

It will work but as JackM. states make sure you limits are adjusted precisely. You also have to decide if you want to risk over shifting on the low gear or high side.

Are 7 speed derailleurs interchangeable?

Shimano derailleurs marketed as 7, 8, 9 speed (and in addition, 10 speed road), can be interchanged in any of those speed drivetrains.

Are 6 7 8 speed chains the same?

Chains for 6-, 7-, or 8-speed cassettes are generally universally compatible across brands and speeds. That means if a chain says “8-speed Shimano” you can use it in your old 6-speed, too.

Is 8 gears enough on a bike?

A single speed is enough for bike commuting on flat or mild terrain, but choose at least 3 speeds to deal with headwinds, heavy loads, and mild climbs. If your commute is hilly, then opt for at least 7 speeds. If your commuting bike will be used off-road, then get at least 9-11 speeds on an extra-wide-range cassette.

Is 7 speed bike enough for hills?

The 7-speed bike is made for flat ground terrain and you can conquer good amount of incline. The 7-speed bike is great all-around bike. It has low enough gear to go up a pretty steep incline and also has a high gear to go pretty fast.

How many gears do pro cyclists have?

The number of gears on a road bike has increased over the years, with the cassette expanding from 6-speed back in the day to 11 -and 12-speed of today’s modern groupsets.