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cantridepete 
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Post subject:
 Posted: Jan 27, 2011 - 05:10 PM
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First post: Oct 28, 2008
Total posts: 2328
Location: Haute Savoie
Status: Offline
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I find going of the toes makes it more stable. if your trying to spot the landing going frontside then that maybe why your over doing the rotation. its supposed to be a blind landing same as a back one  |
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DrBunsenSnowboard
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Post subject:
Posted: Jan 27, 2011 - 05:30 PM
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First post: Nov 05, 2004
Total posts: 6
Status: Offline
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Try and get hold of an old video of Jamie Lynn (TB2 perhaps) as I seem to remember he used to spin frontside off his toes. He used to bring his knees up quite a lot, presumably to avoid hooking an edge on the lip.
If by preloading you mean winding your upper body in the opposite direction to the spin AND holding it until you're in the air, I would assume 180 is the max. Again TB2 and Noah Salasnek where he used to stall the spin by driving his opposite hand. Bit old school though.... and you'll 'never' spin a three because your head won't follow the spin. |
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DrBunsenSnowboard
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Post subject:
Posted: Jan 27, 2011 - 05:35 PM
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First post: Nov 05, 2004
Total posts: 6
Status: Offline
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NickE
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Post subject:
Posted: Jan 28, 2011 - 11:15 AM
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First post: Sep 18, 2007
Total posts: 127
Status: Offline
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mattmania wrote:
So, when doing a normal 360 one pre-loads the body, as you said using the edge to grip the ground to stop that potential energy (PE) turning to kinetic energy(KE). As one jumps, the PE is turned into KE by unloanding. Now, if one didn't preload it would be a lot harder, but i'm pretty sure that one can initiate rotation in the air by moving the body muscles (CPE-KE). Try doing two 90s in opposite directions on a trampoline, tough but possible (please let me know if i've got anything wrong, long time since I did physics).
It’s more to do with conservation of angular momentum.
Sure, you can initiate a rotation of the board in the air, but only by counter-rotating, which gives a limited spin.
You can get an idea of the limits to how much you can spin without what you call pre-loading. Stand with your feet apart but without your board on. Walk your feet round like you’re spinning, but keeping your shoulders in the same place. You can get further round if you’re twisted at the waist to begin with. You probably find it easy to do 180, but awkward to do 360. In fact this is easier than it would be in the air, because your upper body actually has to rotate in the opposite direction (although not as much).
It’s interesting you mention the trampoline. If you’ve been on a board on a trampoline you will notice that it is harder to spin 1s and 3s than it is off flat ground. This is because the board is only in contact with the surface for a short moment which makes it difficult to generate the angular momentum, so you’re much more reliant on counter-rotation.
If you’re over-rotating FS 3s it’s probably how you’re spotting the landing, like cantridepete says. Otherwise, you might try landing them on your toes rather than your heels, as it’s more effective at killing the rotation. You can do this whether you take off from heels or toes. |
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mattmania
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Post subject:
Posted: Jan 31, 2011 - 01:07 PM
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First post: Jan 30, 2005
Total posts: 45
Location: Kent
Status: Offline
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Many thanks everyone,
I think I am trying subconsciously to spot the landing on FS 3's, so if I concentrate on looking up the hill and landing on my toe edge it should help. Will also have a look at those vids DrBunsen kindly posted and try spinning off toes on smaller kickers to start off.
NickE, never taken my board on a trampoline but it sounds a right laugh. Will leave the physics discussion for now but the concept of counter-rotation is certainly useful and something I hadn't thought of before. |
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DrSnowboard
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Post subject:
Posted: Jan 31, 2011 - 08:00 PM
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First post: Oct 11, 2004
Total posts: 129
Status: Offline
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Having just done my first ever FS3's (before crocking myself hooking a toe edge on my lazy fS1..) , I found doing it off my heels (see http://video.mpora.com/watch/j6HqYwHRo/ for style) I would over rotate unless I looked at the lip receding behind me as I came round or at my back foot as it touched down. I think if I kept trying to look down the runout, I inadvertently let the board keep spinning on the ground. Possibly my board was in advance of my body as I did ride in with my front hand across my belly to make sure everything went the same way as I took off.
Good luck, feels great when you land one cleanly. |
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