Originally Posted by cgeib
Got me, but try searching. I think PhysicsMan posted a link to a spreadsheet that lets you enter dimensions and it will calculate the skis radius.
Here's a link to a discussion about calculating turning radius of a ski on edge you might be interested in: http://forums.epicski.com/showthread...ghlight=radius
GREAT lead!!! I had to trace to an earlier thread via PM's link, but it worked. Not that this really answers anything other than the obtuse question I asked... Which was what would the tip/waist/tail measurements be to equal a 7.5 meter radius ski. I started with MY current 163 ski and it's listed tip/waist/tail measurements. PM's calc was within .5 meter radius or so of the "marketed" radius. If I only widened tip and tail, leaving waist alone, I arrived at exactly 7.5 meter turn radius with measurements of... Taaa Daaa...
140-65-127 Quite an hourglass figure, huh? Not that it means anything I guess??
But it was interesting to note, based on the "claims" at that and the linked thread, that the turning radius under a bend is related to the cosine of the edge angle... snore... sigh... Actually, I find this interesting, sorry! BUT, and a HUGE BUT... based on that theory, wouldn't a ski of any radius, when tipped progressively on edge have a shorter and shorter
turning radius until that radius equalled "zero" at a full 90 degree edge angle??? Either that means that the ski has "bent in half" -OR- the claim is incorrect. I'd argue that a ski on a 90 degree edge had an infinite radius??? In other words, at a FULL 90 degrees angle to the surface of the snow, with the tip pointed straight downhill, the tail would follow staight behind it no matter what the "arc" or turning radius of the ski. I know, I know, who cares??? You're right, but just a quick reminder... "Physics Club" meets after 6th hour today... and we don't meet in the gym any longer since the "incident".