Originally Posted by
merlinextraligh
What that misses is that a 1x12 setup has 12 useful ratios to cover the range of gears. Typical six speed rear freewheel, when you consider redundant ratios, and cross chaining issues had maybe 6-8 actual, useful, non redundant gears.
So make that 2x7/8
but with far less durability especially if one makes much use of that 10T cog.