3x10 rear cluster

[WhuYu]

Good day guys, please excuse my ignorance, but I need guidance. I have a 3 x 10 10spd:  11 x 36 cluster and 40/30/22 crankset. My bike is a Scott Spark 2015 model.

1.Will a 11x 40 cluster work/be compatible? Or will there be shifting issues?

2. Do I need to change the derailleur?.........not sure what I currently have, I think a long cage? The distance between the jockey wheel centers is 95mm.

Any input will be appreciated.

[David Marshall]

On the first my guess for a 2015 3X10 is no. 36T is most likely the maximum. 

To be sure you need to get the part numbers off the front and rear derailleurs and then look up their capacities online.

[Alouette3]

Check the published range on your derailleur. You may get away with 11-40 on a x2 system, bit might run into issues on x3.

Shimano makes an affordable Deore level 11-46T, 10 speed cassette, HG500 or something like thay. Have had good success converting the front to x1 with a narrow wide chainring and one of those cassettes on the rear

[WhuYu]

31 minutes ago, David Marshall said:

On the first my guess for a 2015 3X10 is no. 36T is most likely the maximum. 

To be sure you need to get the part numbers off the front and rear derailleurs and then look up their capacities online.

Ok thank you.

[ChrisF]

If you are close to a bicycle workshop, rather just take the bike in.  Either to have the job done, or for them to help getting the correct parts.

 

This is the type of project that can go sideways if you dont know what to look out for.

[WhuYu]

42 minutes ago, ChrisF said:

If you are close to a bicycle workshop, rather just take the bike in.  Either to have the job done, or for them to help getting the correct parts.

 

This is the type of project that can go sideways if you dont know what to look out for.

Thank you, good comment..........

[droo]

3 hours ago, WhuYu said:

Good day guys, please excuse my ignorance, but I need guidance. I have a 3 x 10 10spd:  11 x 36 cluster and 40/30/22 crankset. My bike is a Scott Spark 2015 model.

1.Will a 11x 40 cluster work/be compatible? Or will there be shifting issues?

2. Do I need to change the derailleur?.........not sure what I currently have, I think a long cage? The distance between the jockey wheel centers is 95mm.

Any input will be appreciated.

Depends what you're trying to achieve.

If you're doing a 1x conversion you should get away with an 11-40, though you may need a longer B screw.

If you're trying to keep it 3x, then in the 22/40 combo you'll be going so slowly you'll fall over, even if you can get the combo to work.

[openmind]

Do you plan to keep using the 3x crankset? If so, why do you want a larger big sprocket on your cassette - a 22x36 gear ratio will get you up anything except a cliff face. If your cassette is worn, you can still get 11/36 10x cassettes. I just bought a Shimano XT one for an old bike from CWC. 

With a 3x setup your current derailleur will already be a long cage, there is no longer cage than that. You could try using the 11/40, Shimano are typically conservative in their range specs. This will probably work out ok if you limit your use to two chainrings, i.e. switch to a 2x crank, say 24/38 and adjust your chain length to suit. 

(Edit: just saw Droo's post - he says it best, as usual )

Edited June 19 by openmind

[WhuYu]

29 minutes ago, openmind said:

Do you plan to keep using the 3x crankset? If so, why do you want a larger big sprocket on your cassette - a 22x36 gear ratio will get you up anything except a cliff face. If your cassette is worn, you can still get 11/36 10x cassettes. I just bought a Shimano XT one for an old bike from CWC. 

With a 3x setup your current derailleur will already be a long cage, there is no longer cage than that. You could try using the 11/40, Shimano are typically conservative in their range specs. This will probably work out ok if you limit your use to two chainrings, i.e. switch to a 2x crank, say 24/38 and adjust your chain length to suit. 

(Edit: just saw Droo's post - he says it best, as usual )

Thank you to Droo and Openmind, and others, your comments make sense to me, and I appreciate your input. I will stick to the 3x10....................36/11 cluster. I was just kinda looking at options instead if changing to a 1x or 2x...............but will stick with what I have.

[ChrisF]

Having gone down this road before, some things to consider.

 

1x11 is the next logical and cost effective way to go.  (granted a few budget 1x12 options have come along since I last did this)

 

Some new parts:

- Cassette 11-50

- Deraileur

- narrow-wide chain ring ... choose wisely for the hills you intend to ride

- 11 speed trigger

- 11 speed chain

- you may just need some chain ring bolts ... 

 

It can be a quick 30 minute job .... though some bikes can make you sweat a bit ...

 

 

This used to be about a R5k job.

 

 

What do you gain ?

- simplicity of a single shifter

- cleaner look

- reduced gear range ....

[RobertWhitehead]

In Afrikaans there's a saying: "Ek gooi nou die hele appel kar om"

In your current situation I will go 1x10 with a wide range 10 speed cassette (11/46 or 50) and a 34T oval in the front. This set up will shave around 600-800g off your bike in weight and will set you back around R2-3k