Originally Posted by
Sarequads
I never use the 11 and 13
In that case, you could also replace you 50T ring with a 46T ring like the one here:
https://www.universalcycles.com/shop...&category=2628
You'd need a 110 BCD ring and it would be best to have a pinned and ramped ring. It doesn't have to be FSA, but theirs seem to be competitively priced. Don't worry about the fact that it says the 46T ring is made for use with a 36T inner. It will work with your 34T inner and the gap when you change between rings won't be so bad.
Using the 46-34 combination with a 13-26 8-speed cassette would give you this gearing:
HTML5 Gear Calculator
That lacks the low end of your current 34-30 ring combination but it has the rest of the range you use with a bunch more mid-range options.