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Just curious...

post #1 of 8
Thread Starter 
After looking at narc's corduroy-loving thread, I was just wondering...

Does anyone know why groomers are designed to leave a corduroy surface finish? Why couldn't they make it a packed flat surface without the grooves?
post #2 of 8
My guess is that it would turn into ice faster without the grooves.
post #3 of 8
the teeth add a final shape (which equals flat) to the chopped up snow. If you just ran over the snow with a flat mask, all the debris would still be debris. It wouldn't be as uniform.

It's kinda like a rake versus a blanket when cleaning up your sand-box.

I personally think the groomer's final tarp should be more obtrusive with longer teeth... longer and finer.
post #4 of 8
I think that longer teeth would expose the thin spots and degrade the packed (ice), base that we rely on here in the east.

What they do here mostly by grooming is smooth out the sugar piles and add a bit of texture to the ice.
post #5 of 8
The finisher that leaves the grooved surface is just a rubber mat.

Reasons I can think of.

Catches new snow and helps it join withthe surface.

Better visibility. If it were groomed smooth, it might be harder to see contours.
post #6 of 8
It'd be interesting to see what how it evolved & what the "official" line is. Seems to me that it would work like Magnetraction but from the snow side. It reduces the total edge in contact with the snow (ski angle to grooves dependent) & should thus, by distributing the same force over a smaller total contact length, increase the pressure applied to what edge is in contact with the groomed snow. This would presumably makes it "easier" to set an edge relative to the "same" snow without the ridges. Just speculating though....
post #7 of 8
My uninformed guess is that the grooves add some texture=grippy. Also add skiers knock down the grooves they create some loose snow.
post #8 of 8
uh... just think of the other machine that smoothes it all out- a Zamboni. Not exactly a surface conducive to skiing. If it were all flat, it would probably pack down more instead of blowing apart, resulting in a surface akin to polished granite. Not to mention that here on the east coast you need the groomers to beat up the boilerplate & get some groove-grip on blue ice surfaces- if they were smooth they'd be unskiable and never, ever hold onto any snow (which still sometimes seems to be the case anyways). Y'know all that jazz- then there's that humming/vibrating sound when you're blowin' down some brand new stuff on a really cold day that's almost like you're riding a big zipper at mach schnel, which is kinda cool.
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