Originally Posted by Max_501
Bob, by active rotary I mean any intentional recruitment of muscles which are used to intentionally rotate the ski about a point somewhere along the length of the ski
By my definition, any turn that is not a pure carve has had a supplementary rotary force applied to the skis. Lacking such rotary force, when put on edge and center pressured, a healthy ski will do what it's designed to do: CARVE.
Active vs Passive are terms that cause more confusion than clarity, in my opinion. If you want to produce a specific non carved turn shape, you need to (in some manner) create and apply the exact rotary force required to overcome your ski's natural desire to carve, and do it in the precise manner required to produce the exact outcome you desire.
You may want to pivot,,, you may not. You may want to turn long, or short, or somewhere in between. You may want to start the turn at one radius, and finish at another. You may want to turn with a very narrow skid track, barely different from carving, or you may want to turn with a very wide skid track, and tone down the speed. There are so many options when you're not carving, and being able to employ those options requires very specific and intentional applications of rotary force.
I would imagine most people would think of the intentional and specific rotary usage I described above as "active", if they were pressed to choose between that term and "passive". And I can't for the life of me see the "unintentional" and "passive" descriptors having much application in high skill level non carving. With no intentions, how can unique and specific outcomes have any hope of seeing life? Each different turn shape/type I described above requires a different type of rotary force application to produce it, and also the knowledge and ability to effectively deploy each. How can we ever consider that a "passive" act? Imagine the potential to confuse if we do.
I've seen some refer to "passive" rotary as that which happens in the joints when carving, during the process of tipping, angulating and balancing,,, and which has no direct added effect on the actual turning of the skis. I'll comfortable with that. But when it comes to the rotary forces used to turn the skis in a precise manner, I think we can toss the terms "active" and "passive" right in the trash can. In that context, saying rotary is active is like saying rain is wet. Well, duhhhh,,, of course it is.