Currently using a 34/50 11/28 combo. My rides are pretty flat around Winchester / new forest but I do end up using the small combination for some of the bigger hills. Thing is I am regularly spinning out. Yesterday on the flat with a tail wind I was holding 36mph at 160bpm, so definitely more in the tank but I couldn't spin any faster.
Would I be able to swap the big ring to a 53 from a double? Front shifting seems very sensitive to setup and I'm worried it would be too big a jump?
And secondly, what are the rings called on crc or Merlin? Doesn't appear to be force chainrings unless I'm being a muppet (entirely possible)