Originally Posted by
Kapusta
Yes, standard (or compact) cranks do not support it. That is why I was suggesting the OP get a 30/46 CRANKSET.
Yes, I know. When I said "standard", I wasn't referring to 53-39, I was referring to cranks that road bikes generally come with. I was pointing out that a new crankset would be required, my point being that this...
...is far more expensive than a new cassette. And, furthermore, that the OP would still have to get a new cassette anyway to achieve the low-end that they want, because 30-34 is significantly higher than 34-42.