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Conference vicki::boats

Title:Powerboats
Notice:Introductions 2 /Classifieds 3 / '97 Ski Season 1267
Moderator:KWLITY::SUTER
Created:Thu May 12 1988
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1275
Total number of notes:18109

109.0. "Ski Jumping" by BINKLY::SMITH () Thu Aug 11 1988 14:55

    
    Well, how about a note about jumping.
    
    I went over the jump for the first time last night,
    what a blast it was.  The jump we have is 5 1/2 ft. high.
    
    My first attempt at the jump was interesting,  the thing looked
    like a wall as I approached it.  I made ONE major mistake.
    As I hit the jump I was still resisting the pull of the boat so
    my feet started sliding out to my right,  by the time I hit the
    top of the jump I was horizontal and I ended up landing head first.
    The helmet and my face helped break my fall.   The first thing I
    hear from the boat is " Mike,  don't try the flip until later".
    So, I have been watching too much ESPN.   Pass number two went
    much better,  with a nice straight shot at the jump I set a new
    personal record by landing about a 20-25ft jump.
    
    I have snow skied for many years and have been off all kinds of
    jumps but it really is a whole new ball game on the water.
    
    Has anyone else here had the chance to go over a jump?  It would
    be interesting to here others experiences in this area.
    
    /Mike Smith
    
     
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109.1I remember....it hurt.CURIE::THACKERAYRay Thackeray MR03 DTN 297-5622Fri Aug 12 1988 02:5922
    Yeah. Your description of the ramp looking like a wall on first
    approach is right on. I did the same thing, losing my balance and
    feet sliding out so that I went over the ramp horizontal to the
    water, doing a helicopter and having a crackerjack landing on my
    chest, feet somewhere around my ears (a new slant to bending over
    backwards).
    
    I tried three times. If I was a cat I would have six lives left.
    Never did manage to land properly, hearing shouts of "DON'T LOOK
    DOWN!!" which I promptly did on each occasion, scaring the living
    daylights out of my obviously seriously deluded brain. Or should
    I say 'diluted'?
    
    I had to wear a strange kind of belt with a loop in it to hold my
    arm down, presumably to keep the angle of leverage low and therefore
    minimise the possibility of spinning.
    
    Great fun though!!
    
    Tally-ho,
    
    Ray
109.2Flight of the ...ROGER::GAUDETSki NautiqueFri Aug 12 1988 11:1460
    Well I should add my comments here since I did a lot of jumping
    over my vacation.  As in any sporting event there are some
    "rules-of-the-road" which should always be heeded.  Jumping is no
    different.  The cardinal rule is: DO NOT CUT ON THE JUMP!  You RIDE
    on the ramp, not SKI on the ramp!  The big mistake I've seen everyone
    do (I'm no exception) is to do exactly what Mike (.0) described
    on his first attempt...keep pulling when you hit the ramp.  As he
    (and everyone else) finds out the ramp does not react with the skis
    like the water does, result is a horizontal launch.  Think about
    it...if you weren't travelling at probably 25-30 mph (at least)
    when you hit the ramp, your skis would slip out from under you and
    you would slam into the ramp with your head/side/whatever else.
    Not a pleasant prospect at all!
    
    The "strange kind of belt with a loop in it to hold my arm down"
    that Ray (.1) described is called a jump sling and is used to keep
    your boat-side elbow close to your body.  One of the things you
    have a tendancy to do when you go off the top of the jump is to
    compensate for the slack in the rope by pulling it up to your chest.
    WRONG!  This throws you back and you'll never land properly.  Believe
    me, I'm the master!  You won't believe how much difference it makes
    if you really THINK about holding the handle at your hip when you
    go over the jump and KEEP IT THERE!  The key is to approach the
    ramp with your skis FLAT, crouch down (bend the knees, not the waist),
    hold the rope at your hip and ride up the ramp.  You want to try
    to "pop" up (straighten out your knees) about half-way up the ramp
    (later on as you increase speed you'll want to start to "pop" as
    soon as you hit the bottom of the ramp), but don't worry if you
    don't do this the first few times.  Good position on the jump will
    result in good position in the air.  The landing is actually very
    simple.  Most times you'll find that you don't even have to bounce
    on your butt to absorb the shock...your knees can handle it.  But
    it looks impressive to bounce once and toss a big spray, then ski
    away with one arm in the air...just like on ESPN, right Mike?  :-)
    
    The best way I've seen to teach someone to go over the jump is to
    have them ski up the ramp from the left side bottom up to the right
    side top (assuming the standard passing of the boat to the right
    side of the jump).  The boat should pass the ramp about 30-35 feet
    from the right side and speed should be about 22-25 mph for the
    first attempt.  { Oh yeah, and be sure you wet the ramp.  I still
    have a bump on my face from kissing the skis on a landing from a
    jump off a ramp that had started to dry in the sun...you get thrown
    forward, sort like putting on the brakes half-way up the ramp. }
    The skier pulls out to the left side of the boat and lines up with
    the lower left corner of the ramp.  Following the "crouch down"
    instructions above, ride the ramp from lower left to upper right
    corner.  You don't HAVE to go off the top either.  Try a couple
    of jumps off the edge, say half-way up, just to get the "feel" of
    the ramp.  Keep the handle close to your right hip, pop if you can,
    and take the landing with your knees (bounce on your butt if you
    want).  Keep that handle DOWN!  And voila!  You made it!  Once you
    master this, you can begin to increase your speed to the ramp by
    waiting longer before you cut to the ramp.  Soon you'll be cutting
    to the ramp from the other side of the wake!  And then once you get the boat speed up
    to 35mph, you can challenge the world record (203 feet?). :-)
    
    Good luck, and enjoy the flight!
    
    					...Roger...
109.3FSLENG::WHYNOTFri Aug 12 1988 11:543
    New world record is now 205' set by Sammy Duvalle. (don't you watch
    ESPN?)
    
109.4Straighten Ze Knees!TOOK::MERSHONRic MershonFri Aug 12 1988 12:4226
    Re: 2, Roger,
    
    I'm not a jumper, but a few things I do know about, by watching tapes
    and reading articles and books.  Please correct me if I'm wrong...
    
    The jump sling is used primarily for sustaining the resistance of
    the boat while cutting the wake and jumping off the ramp.  Proper
    technique for jumping requires your arms to be in.  Without the
    sling, the arms will tend to be pulled toward the boat during the
    cut and pop off the ramp, resulting in lost power.
    
    And keeping your knees bent, when you get to the ramp can be dangerous.
    It results in crushing.  The best position at the base of the ramp
    is to be standing almost straight up.  That way when you hit the
    bottom of the ramp you have some resistance against the impact.
    The knees will bend naturally when you impact the bottom of the
    ramp, and then you will be in the position for a "pop" off the top.
    If you keep your knees bent when you approach the ramp, they'll
    bend more when you impact the ramp and the rest of your body could
    end up scrunched over in a crush.  Without much time on the ramp
    to recover, you could go over the top in this position!
    
    Body position approaching the ramp is totally opposite to the slalom
    buoy approached!  Straighten ze knees (but don't lock 'em)!
    
    -ric.
109.5RE: .-1 ... AgreedROGER::GAUDETSki NautiqueFri Aug 12 1988 13:5128
    I must concur with Ric's version of the approach to the ramp.  In
    the early learning stages of jumping, bending the knees (just a
    little) gives you a secure feeling that you can extend at the top
    and still take the impact of hitting the ramp.  But as we all know
    in the water skiing world, old (read, "bad") habits are hard to
    break, and when you start cutting harder to the jump you'll want
    to do as Ric suggests and straighten out your knees more.  I've
    found that what works for one person does not always work for others.
    Some folks I jump with can take the jump with bent knees and this
    helps their "pop" off the ramp.  Since I have pretty strong legs
    I can jump like this.  But others "crush" (as Ric pointed out) when
    they impact the ramp, and this throws off your timing and power
    (as Ric called it) off the ramp, not to mention that it can be very
    dangerous if you crush too much, a.k.a. facial/bodily reorganization
    by the ramp.
    
    The sling keeps your arms in tight to your body so as to keep your
    center of gravity over both skis.  Extending out toward the boat
    moves your CG over the right ski or even further toward the boat.
    Body position is the key.  As stated in an earlier note, good position
    at the base of the ramp yields good position off the end of the
    ramp.
    
    Practice, practice, practice.  Use the ESPN tapes as a guide (or
    dream) if you wish, but remember these guys hit the ramp at
    70+ mph...you're not ready for that yet (at least I know I'm not)!
    
    					...Roger...