Originally Posted by
Bandera
Every winter I consider building a S3X FG up myself to expand my ride-able range of local hills.
48X18 yields 70, 53 & 44 gear inches.
-Bandera
Do it! I love fixed, but it kicks my ass in the hills and for centuries. The 3 ratios of the s3x was my goal for this winter. Mine is a 52x16 so 85, 64 & 53 gear inches. I also bought a 13t to play around with 44-49t rings to get that sweet spot.
Is it hilly near you?