Originally Posted by barrettscv
I try to think of the ski in three segments; tip, waist and tail.
The wider the tip, the greater the float in soft in soft snow and the easier the turn initiation, however the ski could feel "grabby" and the ski must be well built to avoid excessive torsional flex.
The wider the waist, the greater the float in soft snow, however the ski will feel slow from edge to edge and requires greater leverage to tip when used on hard snow.
The wider the tail, the stronger the carving power and the tighter the turning radius, however the ski will lack stability at speed, it becomes resistant to changing edges and becomes more difficult to skid.
Hope that helped,
But the last paragraph here says a wide tail is hard to skid....I'd think that it would be easier to skid if the waist was also wide, so it seems to me that there should be some correlation between skidability and the difference between waist and tail.
For the z-9 and the atomic,
Z-9 = 126-74-105 = 31mm waist/tail delta
M-11 = 131-76-115 = 39mm waist/tail delta
In moguls, the tips will often be off the snow, yet the tail of the ski will be wanting to carve, and you'll need a more significant pivot to unhook it... I'd suggest that a key measurement for "carvability" is this waist/tail delta. The atomic has more carving power.
On the other part of the ski, the tip/waist deltas are 51 for the Z-9 and 55 for the M-11. This to me says that the atomic has a greater "self steering effect", so should be a poor skidder. (Having skied it, I believe that.)
The Head is 120/65/105, so by looking at the tip/waist delta (55), it should have similar steering power of the atomic. The waist/tail delta (40) shows that this ski would want to carve even more than the atomic. I'd think that this is a lousy skidder.
But the taper is only 20, so it ought to be a good skidder? Huh?? I don't think that anyone thinks that of the supershape. Everyone I've ever spoken to about it that has skied them says it's quite a lousy skidder, but a grrreat carver.
I think the measurement of "taper" is somehow flawed, since it does not take into consideration the waist. But I may be entirely confused.