2010 SXR Want the wobble/jitterbug gone

Location
Canada
Get a longer ride plate with a D-cut under the pump where the reduction nozzle meets the pump.

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I started riding JS 440 in 88, moved up to JS 550 in 89 and put on bolt on mods, quick steer, skat track, K&N's , ocean plate and intake grate. Then bought a 750sxi in 97 did all the easy low cost bolt on mods I could and it has been a great running ski. Also have a Blaster 1 94, similar mods.

Have been wanting an SXR for a few years and came across this 2010 mint. 1 owner and he only did the ride-plate, intake grate and some blowsion spark arrestors.

Ski does not have sponsons, or tubbies, and the steering cable was slightly mis-adjusted and the ski pulled to the right. I corrected this and the pull to the right was gone, but when coming up on plane, and then backing off... I would estimate about 1/2 throttle the nose of the ski rocks back and forth like a jitterbug fishing lure.

I have changed the ride plate to a stock 750sxi pro plate that a friend has, and the wobble seemed to be less. Then I switched the ride plate back to the Worx 311 plate and tested the ski again with my son. He believed that there was less wobble with the D cut 311 plate.

I am not familiar with the term "chine" so, not sure of this is a good term for what I am experiencing.

I have not experienced anything like this with any other ski I have owned/ridden.
 

Vumad

Super Hero, with a cape!
Location
St. Pete, FL
The bottom of your boat, the wide part down the middle that turns into the pump intake is the ski. The boat rides on that flat part. The chines are the narror part that stick down into the water the same depth as the ski, creating the channels so you have something to carve on. Chine walk is when the boat wobbles on the ski from side to side, transfering from chine to chine when you dont want it too.
 

john zigler

Vendor Account
Location
wisconsin
On totally flat / calm water this is not uncommon, and really no big deal. You will get used to it, and totally forget about it in time.

In water with just a slight chop, this goes away. The SXR is a race bread hull, and wanting to carve. It has a lot of nose pressure, and will "hunt" a little when in flat water. Tubbies, and longer plates will make this even more apparent.

Trust me, I remember back in 04 when I got my first SXR I thought something was wrong with the hull. (coming from a SXI Pro) Now I don't even notice it any more.
 
Thank you to everyone for all the replies and advice. I think the " loves to carve" and "hunts" when on flat water describes very well what I am experiencing, and yes I think it could also be described as "chine" , the boat in the video seems to do this much more violently than what I think my ski does, but the basic motion seems the same.

I did notice that this ski was most at home in a deep, hard carve the few times I got to ride before cold weather. In retrospect I did have to forward weight more to get the nose to bite on my SXI, and JS550 in the past when carving bouys.

I think I am possibly going to try a TBM grate and a shorter TBM ride plate with deeper contours. I see many of the SXR riders suggest these. I have always liked the winged, or deeply grooved ocean style plates for all my other skis. Maybe the shorter plate will help some, and give me a little more confidence as I adjust to a new ride with this hull.

I will likely sell the Worx D cut 311 and Worx 222 intake grate. Will there be any demand for these items If I post them on X-H20? or best to go with ebay?
 

john zigler

Vendor Account
Location
wisconsin
My favorite plate on a Stock SXR is the JD.

Personally I do not like the TBM's, unless it is on an 1100 SXR.

I DO tell people though, ride plates are a preference, and there is NO right or wrong. Everyone has different goals, riding styles, your weight, set up etc all can make a difference. Try to ride as many different set ups as you can, to see what you like.

Also, the stock plate really works really pretty good.

I do like the TBM scoops.
 
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