Originally Posted by
HTupolev
When considering cycling history as a whole, there's no single "regular double." 53-39 became popular around 1990. But there was a span of a couple decades right before that where the closest thing to a standard double was 52-42.
And we're living in that era where a double is a 53/39, a mid compact is a 52/36,and a compact is 50/34. Feel free to continue living in the past if you want to. When someone says shifter, you should act shocked when they're really talking about a brifter because there was an era where shifter meant dt shifter...
Strangely enough, none of these have much difficulty shifting.