Cassette 11-32 to 11-34

[vickster]

The Genesis (10 speed SRAM Rival) will need a new cassette and chain soon. I was going to put the same 11-32 Tiagra cassette on, but given my knee needs mollycoddling on hills I wondered whether I could fit an 11-34 Tiagra cassette instead (which is incidentally £3 cheaper ). Have the medium cage RD, presume I'd just need a standard 10 speed chain?

Thanks in advance

 

[numbnuts]

I think you will need a long cage

 

[vickster]

I think you will need a long cage

Ah ok, don't think there is one for SRAM and I certainly don't want to start buying and changing parts. This suggests the medium cage only takes up to 32
https://www.chainreactioncycles.com/sram-apex-wifli-10-speed-rear-mech/rp-prod123432?
I'll stick with 11-32 if that's the case. Cheers

 

[TheDoctor]

I'd bet that it will cope with a 34T sprocket. I've run a rear mech outside its limits (32T instead of 27T) and it was OK, but a bit noisy.

 

[Milzy]

I have the latest Ultegra mech which is shadow like off mountain bikes. I can run a 34T no problem on this.
You could with a long cage mech and longer chain.

 

[Racing roadkill]

https://www.sigmasports.com/item/Wolf-Tooth-Components/Road-Link-Rear-Derailleur-Hanger/DOQG

This allows you to run a big sprocket without changing cage length.

 

[Spiderweb]

This is a similar thing to what @Racing roadkill posted but much cheaper at £4.99.
https://www.sjscycles.co.uk/gear-spares/aluminum-rear-derailleur-hanger-extender/

 

[vickster]

The hanger is part of the frame so I don’t know if that’s a limitation?
I’ll just stick with 11-32 if I need to start paying for other stuff/work

 

[MontyVeda]

I was told i'd probably need a longer cage when swapping my 11-28 for 11-32... but I bunged the new cassette on and all is fine with my original cage

 

[biggs682]

@vickster suck it and see ?

 

[vickster]

It all depends on your rear mech. Find the spec, look up the capacity and max sprocket. If you're running a 32T big sprocket now you'll already have a long cage.

34T is a very nice to have - I've just fitted one, so give it a go.

I could ask the LBS who'll be fitting

SRAM don't do a long cage, but it might be that the medium is the same, although I linked above and it says max tooth 32

 

[Soltydog]

I was told i'd probably need a longer cage when swapping my 11-28 for 11-32... but I bunged the new cassette on and all is fine with my original cage

I did the same on my Tiagra equipt Kinesis & it runs fine, unless you're on big chain ring & 34t on cassette, which you shouldn't be I'd risk it

 

[Spiderweb]

The hanger is part of the frame so I don’t know if that’s a limitation?
I’ll just stick with 11-32 if I need to start paying for other stuff/work

The derailleur hanger extender I mentioned above bolts on to where your derailleur normally goes, whether onto a hanger or directly on to the frame. Surely worth spending a fiver and getting your LBS to fit when they change the cassette/chain?

 

[vickster]

The derailleur hanger extender I mentioned above bolts on to where your derailleur normally goes, whether onto a hanger or directly on to the frame. Surely worth spending a fiver and getting your LBS to fit when they change the cassette/chain?

£6.50 including postage