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Weird technique
Posted: 19 Jun 2011, 02:23
by Zmaster
I was jumping at kulm when I experienced this:
http://www.nbl.fi/~nbl3912/DSJ/skigliding.rpl
Not very useful "bug", but definitely something to maybe look at.
Short description if you can't bother to watch - skis started to touch ground at 160m and jumper leaned backwards and his feet never got in touch with ground. Skis glided downhill to over 200m until jumper lost balance and fell.
Re: Weird technique
Posted: 19 Jun 2011, 20:30
by Metsi
This could happen only in the middle part of the hill in my opinion. Notice that u gained a lot of speed in the first part of the jump by leaning too much forward. I tried a lot of techniques in BadMit but still the higher parabola seems to work better on this hill

Re: Weird technique
Posted: 19 Jun 2011, 22:09
by Zmaster
This was only to illustrate the weird leg / ski force and how the binds hold that kind of force.
Re: Weird technique
Posted: 19 Jun 2011, 22:45
by Jussi Koskela
Looks still pretty ok to me.
Re: Weird technique
Posted: 20 Jun 2011, 03:19
by Metsi
Jussi Koskela wrote:Looks still pretty ok to me.
Yes technically there's no problem at all

What i meant was that maybe on some other, bigger hills this will come more useful for record hunters (can't figure how right now but still it's worth taking a look and try).
Re: Weird technique
Posted: 20 Jun 2011, 14:25
by Zmaster
Jussi Koskela wrote:Looks still pretty ok to me.
I personally thought that the muscles which turn your feet upwards couldn't possibly hold that much
But if it's ok, it's ok. Just something that looked weird to me!
Re: Weird technique
Posted: 20 Jun 2011, 15:49
by Jussi Koskela
Zmaster wrote:I personally thought that the muscles which turn your feet upwards couldn't possibly hold that much
The forces are relatively small since the ski jumper is moving in the direction of the profile (i.e. he's not holding 700 Newtons up on his skis/feet). Besides, the boots prevent the ski jumpers from straightening the ankles.
Re: Weird technique
Posted: 20 Jun 2011, 18:17
by Zmaster
This just made me wonder if it's okay to have this kind of thing to happen, since normally that jump would've been taken down in 160m with normal landing. And those acrobatics made it over 200m.
I know it's really rare to have a jumper slide so long - I tried to remake that situation with much worse results. Therefore it needs absolutely no change. Just made some conversation if someone had experienced this before and/or with even 'better' results and gone for alarming results.
Re: Weird technique
Posted: 31 Dec 2011, 13:08
by Olli Tamminen
http://speedy.sh/T96zC/extreme.rpl
I made it too.

This looks (IMO) even more strange than Zmasters.
Re: Weird technique
Posted: 06 Dec 2012, 18:33
by Zmaster
http://www.youtube.com/watch?v=idkYsCnDTd4
One more, grabbed the link from polish section

Re: Weird technique
Posted: 06 Dec 2012, 19:28
by J.MIRO