Why does the jetski jump?
Mike Stokes
Dermot O Flaherty wrote:
>
> Hello jetski experts,
>
> I have a simple question. I have gone jetskiing a number of times
> on a stand up jetski. When I stand up and open the throttle, the
> front of the jetski starts bobbing up and down, until eventually
> I'm bunny hopping in and out of the water. When I slow down, it travels
> smoothly again. I can't gerally get above two-thirds power.
>
> Why is this, am I standing too far back? Too far forward? Not flexing
> my knees enough? Do I just need more practice?
>
> Thanks,
> Dermot O Flaherty Work - eei...@eei.ericsson.se
> Home - unpl...@indigo.ie
The stand-ups do take some proctice to get them to dance just right.
Try this; after getting the ski to plane out, move both feet a far
forward as possible and put all of your weight on the balls of your
feet. I even push down on the handle bars. The trick is to keep
your weight forward. What happens is when you apply the throttle
the ski will lunge forward lifting the front out of the water
since your weight is on the back, the pump will cavitate and you
will lose all your power. I can do this on my sit down as well,
its kind of fun, on smooth water I can bounce the ski so high
that I have flipped it over on me. Have fun and don't give up.
Mike Stokes
litt...@iac.net
ROBERT CROSS
A good ride plate will cure the problem
KCGigs
In article <4sis03$6...@erinews.ericsson.se>, eei...@eei.ericsson.se (
Dermot O Flaherty ) writes:
>I have a simple question. I have gone jetskiing a number of times
>on a stand up jetski. When I stand up and open the throttle, the
>front of the jetski starts bobbing up and down, until eventually
>I'm bunny hopping in and out of the water. When I slow down, it travels
>smoothly again. I can't gerally get above two-thirds power.
>
>Why is this, am I standing too far back? Too far forward? Not flexing
>my knees enough? Do I just need more practice?
>
>
Dermot;
Thats exactly what you need is more practice. "Porpoising" happens with
all standups and gets better as you learn how to ride and position your
weight better. I've found that when going full throttle you want to bend
over, squat down with one leg forward for balance and all your weight on
your back leg and hang your butt as far back as possible pulling back on
the handlepole. An extended ride plate will also help lessen the amount of
porpoising.
Kevin Geiger
Denver CO
kcg...@aol.com
C. Wheeler
>> I have a simple question. I have gone jetskiing a number of times
>> on a stand up jetski. When I stand up and open the throttle, the
>> front of the jetski starts bobbing up and down, until eventually
>> I'm bunny hopping in and out of the water. When I slow down, it travels
>> smoothly again. I can't gerally get above two-thirds power.
>>
>> Why is this, am I standing too far back? Too far forward? Not flexing
>> my knees enough? Do I just need more practice?
>>
It would be interesting to know your weight and what size stand up ski
you are on.
My first experiences on Jetskis (stand ups) was several years ago on
small ones (305 and 440). On small ones, I suffered the same porpoising
trouble you described. Since my little sister could ride the same skis
with no trouble I attributed the problem to my 190 lbs. (compared to my
sister's 120) on an short, underpowered machine.
This was just a guess.
Curtis
Jon Dickason
You are probably too far back in the tray. Try moving forward until you find
the right balance.
JD
Dermot O Flaherty wrote:
>Hello jetski experts,
>I have a simple question. I have gone jetskiing a number of times
>on a stand up jetski. When I stand up and open the throttle, the
>front of the jetski starts bobbing up and down, until eventually
>I'm bunny hopping in and out of the water. When I slow down, it travels
>smoothly again. I can't gerally get above two-thirds power.
>Why is this, am I standing too far back? Too far forward? Not flexing
>my knees enough? Do I just need more practice?
>Thanks,
>Dermot
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