Originally Posted by engineerbob

Just to add to my confusion, my Suntour Vx has the usual two screws: "L" and "H" possibly corresponding to "low" and "high". The former limits how far the derailleur can move toward the large sprocket, whereas the latter limits movement in the direction of the small sprocket. From that I would conclude that the small sprocket is a higher gear than the large, and that shifting from small to large would be described as "down-shifting."

Bob