Oh ok, I’d probably get the cassette then. You’ll find one for a decent price, just make sure that your derailleur can fit it. You can normally ignore all the limitations, so fitting a 28t on the rear should be ok. Check with your LBS maybe or try using a friends or improvising?
-BC
Gearing too high. Swap front or rear?
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Nah, i got a 12 up cassette by mistake (mispackaged) rode around with it on a compact for 2 years, didn't notice up until i came to replace it and couldn't remember what i'd bought, had a closer look and realised it wasn't the 11 up i usually ride. That includes a lot of (very) fast descending and fast road work.
All depends how good (or otherwise) you are at higher cadences. Or judging when a tuck will be faster than pedalling.
On a bigger cassette, the extra mid cassette sprocket is more useful/useable than an 11 as well.
The difference between 12t and 11t is 9%. It's a nice contribution to your range which helps when you tour or go climbing at lower cadences. If you never use it then you could just put a 46t chainring on and get smaller jumps on the whole cassette and easier front shifting. (Just an idea. )
If you are doing flat roads a lot then 12-25t cassettes make a lot of sense so you can dial in the cadence perfectly.
The 16t cog is sacrificed in most cassettes over 12-25/12-27t. The jump from 15t to 17t is 13%.
Some people dislike a jump of 13% instead of two 7% jumps, but some people dislike the loss of 9% range. I happen to be in the latter group, mattr is in the first.
Just an interesting little sidenote is that 9% loss in range is about the same loss of range that a 2.5t reduction on your largest cog would do. Some people upgrade cassettes to obtain less than that (28-30t).
If you are doing flat roads a lot then 12-25t cassettes make a lot of sense so you can dial in the cadence perfectly.
The 16t cog is sacrificed in most cassettes over 12-25/12-27t. The jump from 15t to 17t is 13%.
Some people dislike a jump of 13% instead of two 7% jumps, but some people dislike the loss of 9% range. I happen to be in the latter group, mattr is in the first.
Just an interesting little sidenote is that 9% loss in range is about the same loss of range that a 2.5t reduction on your largest cog would do. Some people upgrade cassettes to obtain less than that (28-30t).
I meant the mech capacity not the cassette.....853guy wrote: ↑Sun Oct 14, 2018 10:51 pmHi Svetty,
It won't be Dura Ace 7800, since I can't find any 12-27 cassettes in any case, and the ones I can find are limited to 12-21.
The honour instead will go to good ole' Ultegra 6700, which are plentiful, cheap and to be honest, indistinguishable in shifting quality and real-world weight to the 7800 ones - to me, at least.
Best,
853guy
Ah, yes, okay, that does indeed make sense.Svetty wrote: ↑Mon Oct 15, 2018 1:12 pmI meant the mech capacity not the cassette.....853guy wrote: ↑Sun Oct 14, 2018 10:51 pmHi Svetty,
It won't be Dura Ace 7800, since I can't find any 12-27 cassettes in any case, and the ones I can find are limited to 12-21.
The honour instead will go to good ole' Ultegra 6700, which are plentiful, cheap and to be honest, indistinguishable in shifting quality and real-world weight to the 7800 ones - to me, at least.
Best,
853guy
Like you suggest, I'm also hoping a 28 will be fine but will be checking with a LBS to ensure whatever ends up going on works.
Thanks for the clarification.
Best!
853guy