11-28 to a 12-30

[Nibor]

11 tooth gears never wear out on my cassettes for some reason

 

[migrantwing]

11 tooth gears never wear out on my cassettes for some reason

Same here

 

[Ajax Bay]

My argument is that 2 teeth is not enough to warrant the cost and hassle.

How much hassle is it to replace the 11-28 with a 12-30 cassette? The 5700 RD can cope with the 30t and the capacity required is only one more so chain would be fine. Going from a 28t to a 30t gives OP an extra 7%, which is quite a bit, and maybe is all that's needed.
Mind you the 12-30 cassettes all seem to be 'out of stock'.

 

[migrantwing]

Gonna have to check my DR capacity and chain. I have that horrible feeling that I'll need another chain, too.

Are the basic KMC DX-10 chains any good or should I go for something a bit higher up the chain (no pun intended)?

 

[MontyVeda]

11 tooth gears never wear out on my cassettes for some reason

Same here

always the first one to go for me... maybe it's cos I'm on an MTB and spend 90% of my riding time on that gear. Just had a trundle round the local bike shops, no joy of getting a single 11 tooth gear unless i buy an entire cassette

 

[Nibor]

Gonna have to check my DR capacity and chain. I have that horrible feeling that I'll need another chain, too.

Are the basic KMC DX-10 chains any good or should I go for something a bit higher up the chain (no pun intended)?

I got a DX-10 with my new cassette seemes really smooth and are generally well thught of on line.

 

[potsy]

Gonna have to check my DR capacity and chain. I have that horrible feeling that I'll need another chain, too.

Are the basic KMC DX-10 chains any good or should I go for something a bit higher up the chain (no pun intended)?

I would keep the same chain, unless you are running in big/big it should be fine, maybe fit a slightly longer one next time you need to change it.

Always used KMC here, their X93 or 73 range.

 

[Venod]

Mind you the 12-30 cassettes all seem to be 'out of stock'

http://www.chainreactioncycles.com/shimano-ultegra-6700-10-speed-road-cassette/rp-prod39014

 

[migrantwing]

I think my DR is a short cage version, so no way of running a 32t, let alone a 34t, unless Shimano are as conservative with their numbers as people say.

 

[Ajax Bay]

Unless you have a triple up front capacity of your RD is not an issue/problem, and even then it's only a one tooth increase. Unless you know that the chain has had limited use, it's probably worth changing it when you replace the cassette as the latter will last longer (£30 cassette if you use the one @Afnug has linked) and a £15 chain).

@Nibor - why don't you link up with @MontyVeda - he could use the 11t of the last cassette you replaced.

 

[migrantwing]

Unless you have a triple up front capacity of your RD is not an issue/problem, and even then it's only a one tooth increase. Unless you know that the chain has had limited use, it's probably worth changing it when you replace the cassette as the latter will last longer (£30 cassette if you use the one @Afnug has linked) and a £15 chain).

@Nibor - why don't you link up with @MontyVeda - he could use the 11t of the last cassette you replaced.

Do you think I could get away with an 11-32t cassette, @Ajax Bay? Plenty of room in my B screw, or do you think a 30t is my limit?

 

[Ajax Bay]

What are your chainwheels ie how many teeth? This thread covered similar ground:
https://www.cyclechat.net/threads/lowering-shimano-105-gearing.198048/
and this thread covered new cassette/old chain issue:
http://www.cyclechat.net/threads/old-chain-new-cassette-question.197640

 

[migrantwing]

What are your chainwheels ie how many teeth? This thread covered similar ground:
https://www.cyclechat.net/threads/lowering-shimano-105-gearing.198048/
and this thread covered new cassette/old chain issue:
http://www.cyclechat.net/threads/old-chain-new-cassette-question.197640

Compact 50/34 up front

I also checked my RD and there are no specific markings on it to determine whether it is a short or medium cage DR. I did measure the length of the cage and it was around 97-98mm from end to end, so I don't know if that is a short or medium cage RD.

 

[doog]

Have done two short cage swaps with cassettes one was 27, the other 28..both changed to 30's....might have to adjust the B screw ! and yes...it makes a hell of a difference (on hills)

 

[Nibor]

Unless you have a triple up front capacity of your RD is not an issue/problem, and even then it's only a one tooth increase. Unless you know that the chain has had limited use, it's probably worth changing it when you replace the cassette as the latter will last longer (£30 cassette if you use the one @Afnug has linked) and a £15 chain).

@Nibor - why don't you link up with @MontyVeda - he could use the 11t of the last cassette you replaced.

It has plenty f life in it I thought I may keep a spare