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 Post subject: Bounce
PostPosted: Sat Jan 19, 2013 12:10 am 
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Joined: Tue Dec 25, 2012 7:40 pm
Posts: 3
Hi Guys,
long time reader, first time poster after picking up my new Axis Vandall Edition a month ago.

We have noticed when all tanks and sacs are full and wedge down running at around 23mph we get some bounce. Also happens when all tanks and sacs are drained with wedge up at around 30mph.. does anyone have ideas or pointers to fix? We were thinking extra weight in the front?

Cheers


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 Post subject: Re: Bounce
PostPosted: Sat Jan 19, 2013 8:26 am 
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Team Axis
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Joined: Tue Jun 08, 2010 7:22 pm
Posts: 1321
Location: BoomTown!
What are the water conditions like? If it's near white capping you will get a little slap but for the most part it should be pretty smooth. The only time I notice my bow moving a bunch is when the wind starts to pick up.


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 Post subject: Re: Bounce
PostPosted: Sat Jan 19, 2013 2:17 pm 
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Joined: Tue Dec 25, 2012 7:40 pm
Posts: 3
Should of put that part in, it happens on smooth flat fresh water which is why I'm bit concerned


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 Post subject: Re: Bounce
PostPosted: Sat Jan 19, 2013 3:26 pm 
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Team Axis
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Joined: Thu Jan 06, 2011 9:47 pm
Posts: 634
Your porpoising you experience usually is due to too much rear weight. What is your weight set up when your tanks and sacs are full? Depending on what you have in the rears, you may need weight up front when using wedge to keep it from porpoising.

As for the empty ballast, no wedge, smooth surface porpoising.... that is no good. That shouldn't happen. What prop? How many occupants and where are they sitting?

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John
2011 A22


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 Post subject: Re: Bounce
PostPosted: Sat Jan 19, 2013 4:43 pm 
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Team Axis
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Joined: Tue Jun 08, 2010 7:22 pm
Posts: 1321
Location: BoomTown!
That's weird.... I've had 7 people riding in mine all behind the windshield and never noticed any bounce.


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 Post subject: Re: Bounce
PostPosted: Sat Jan 19, 2013 8:58 pm 
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Joined: Mon May 23, 2011 11:02 am
Posts: 1849
Location: Copperas Cove, TX
No porpoising on my 2011 A22 ever no matter what conditions. Sounds like you have your weight distributed weird.

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2014 A24
2011 A22 (sad to see her go)


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 Post subject: Re: Bounce
PostPosted: Sun Jan 20, 2013 9:51 am 
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Team Axis

Joined: Tue Aug 21, 2012 5:42 am
Posts: 333
Location: College Station Texas
Have you checked your speedo? Only time I have noticed the bounce like your talking about is with wedge down and higher speeds. I know some people have had to calibrate the speedo to a GPS. Just a thought.


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 Post subject: Re: Bounce
PostPosted: Wed Jan 23, 2013 12:08 pm 
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Team Axis

Joined: Wed Apr 27, 2011 1:58 pm
Posts: 659
Location: Smith Mt Lake, VA
Agreed, I only get some bounce when my front bag secretly drains back though the fill line and have way too much weight in the rear.


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 Post subject: Re: Bounce
PostPosted: Sat Feb 02, 2013 11:42 pm 
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Joined: Tue Dec 25, 2012 7:40 pm
Posts: 3
Thanks guys, tried over weekend with extra 250kg sac in front when boarding and left some water in the front sac only when going back to the ramp, worked a charm. No more bounce!


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