750sx VS 750sxi pro handling
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  1. #1
    PWCToday Regular MitchInMN's Avatar
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    750sx VS 750sxi pro handling

    Hi guys, It has been a while since I've posted but as always, I really appreciate any and all input you guys give.

    I have been riding a ton with my girlfriend this summer and here's my dilemma. She has been riding my 650sx and absolutely loves it, but she always comments on the fact that she wishes it was faster and would stay hooked a little bit more in the chop. I threw her on my 750sx and she really struggled in the turns, she seems to have trouble with the stability of the ski compared to the 650.

    I was looking around at options and have read that the rear sponsons and motor placement in the hull of a 750sxi pro make a big difference in handling compared to the 750sx. Is all the hype true? Of course I view it as a way to look for and buy another ski to play with, but if it really does make a difference then I may consider it. I thought about making the jump to an SJ, but would like to stay in the kawi family and don't want to absolutely drain my bank account.

    Wanted to check with the experts first.

    Thanks!
    1998 750sxi pro
    1994 750sx
    1989 650sx
    1987 550/650 swap
    1984 js550

  2. #2
    PWCToday Guru scottw090's Avatar
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    Re: 750sx VS 750sxi pro handling

    I have ridden all of them, its all just tray time. for casual/rec riding, just get used to what you have and enjoy. the 650 rides like a plank of wood and the 750 rides like a pencil. Its crazy how different the sxr hulls handle.

  3. #3
    PWCToday.com Is My Home Away From Home bandit88's Avatar
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    Re: 750sx VS 750sxi pro handling

    Yep, its all just figuring out what you have. A 650sx can carve just as hard if not harder than all of them. If the 650 is in good shape just keep riding it and try to further your limits. If you are looking for more power, there are a handful of easy mods that will liven it up
    -95 750SXI
    -86 440 with PJS800 conversion (now 650) - http://www.pwctoday.com/showthread.php?t=466927
    -92 750SS
    -81 JS440
    Parts for sale HERE

  4. #4
    PWCToday Regular MitchInMN's Avatar
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    Re: 750sx VS 750sxi pro handling

    I appreciate the responses guys! I agree, so much of it is tray time.

    When looking at upgrades, would you say that putting front sponsons on the 750 would help it to be more stable in turns and closer to the 650 that she used to riding?
    1998 750sxi pro
    1994 750sx
    1989 650sx
    1987 550/650 swap
    1984 js550

  5. #5
    PWCToday Guru kotarbi's Avatar
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    Re: 750sx VS 750sxi pro handling

    I disagree the 750sx hull sucks. The pro is way better and the sxr is even easier. Or get a superjet.
    07 Hydro Triple!!
    06, 07 SXR's
    93sx-Pro
    85,87 wetbikes

  6. #6
    PWCToday.com Is My Home Away From Home bandit88's Avatar
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    Re: 750sx VS 750sxi pro handling

    Quote Originally Posted by MitchInMN View Post
    I appreciate the responses guys! I agree, so much of it is tray time.

    When looking at upgrades, would you say that putting front sponsons on the 750 would help it to be more stable in turns and closer to the 650 that she used to riding?
    750 is my favorite hull and I have front sponsons on mine, its still a squirrely beast, thats just how they are. The front sponsons help keep the nose above water in a hard turn, nothing else. Nothing will make a 750sx feel like a 650sx, completely different designs. SXI Pro is good for carving, very nimble and planted to the water, with but with that they are not very playful.
    -95 750SXI
    -86 440 with PJS800 conversion (now 650) - http://www.pwctoday.com/showthread.php?t=466927
    -92 750SS
    -81 JS440
    Parts for sale HERE

  7. #7
    Resident Guru SKISURFONE's Avatar
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    Re: 750sx VS 750sxi pro handling

    The 750sx hull doesn't know when to stop rolling when recovering from a turn. It tends to continue rolling even after center upright. I put front sponsons on, and completely solved the problem. Totally improved stability and handling.
    RACING IS A GOOD EXCUSE FOR MORE TIME ON THE WATER.

  8. #8
    PWCToday.com Is My Home Away From Home theVetteman3's Avatar
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    Re: 750sx VS 750sxi pro handling

    Yep I agree skisurf. That's a problem all older Kawasaki hulls have. In my opinion the 650sx is the best, and the 750 and 550 hulls are by far the worst. Especially after riding a more modern hull with the way handling should be. Prowatercraft tubbies absolutely solve this problem with whatever ski they are on.

    So a few points Mitch. The 650sx most people don't like, but the fact is its ok for what it is. And you can mod one and have a fun all around ski for not much investment. I have a build thread of a 650sx/750 dual carb in the individual builds section, search by my username.

    The 750sx, sxi and sxi pro skis are really good hulls. Handling is very nice and nimble, and with the tubbie addition to cure the problem skisurfone mentioned, very satisfying to ride. You can easily upgrade their engines and make really good riding rec riding skis. The pro has a more advanced hull shape, it's like half way to the sxr from the sx/ sxi. This is the actual hull bottom design which is better. The added on rear sponsons are of smaller secondary importance. You primarily notice the hull improvements in high speed turns. But even then, there's a window where the hull likes to operate stock. Go too fast, and youre out of it's comfort zone. Also one thing to note, all of the 750 hulls feel the same in terms of how easily they roll and how nimble they are. The pro doesn't fix that. The tubbies will help give more stability, especially when you are leaned over in a turn. They offer a huge improvement in side support to help keep you up and prevent you from flopping over.

    All Kawi stand ups feel like riding different diameter logs. They roll consistently from side to side. 650sx and X2 are the biggest logs. Then 750 then 550. The smaller the log the easier they roll and flop over, and more nimble / less stable the ski feels. All these skis can carve excellently. You just roll the log and lean in the turns. The yamahas are like catamarans. The SN and 96-07 RN Superjet have way more stability and will not roll as easily. They want to corner flat, all you have to do is stay balanced on top of them. Their handling is good for beginners who want the most stable thing to learn on, and for freestyle guys who want max stability for all their tricks and wave jumping. The 08+ SJ is like a tri hull catamaran, where the side hulls hit the water only when you turn. It has the reduced stability / nimbleness of the 750 and 550 hulls but side support easily more than the older SJs when leaned over. Really that hull is voodoo magic on what it can do. First gen SXR is a big log with some artificial tricks added to make it more nimble.

    If it was me, I would probably do a few mods to help improve the 650sx. If she responds well to that and likes to keep riding, then think of upgrading her ski sometime within the next couple of years. I think tray time is what she needs now, but there's a lot that can be improved on the 650sx. Swirl impeller, jet dynamics intake grate, jettrim ribbed tray center mat and side pads, pole spring, wider bars, and that thing hook up and ergonomically will be way, way better. Oh and most important mod of all, Prowatercraft tubbies.
    Last edited by theVetteman3; 06-27-2019 at 07:33 AM.
    1985 JS550/800 "Pretty Red": Newmiller 800, Rhaas 750 pump conv. [56.3mph gps]
    2009 1100 SJ:
    Kawi 1100 build in progress
    2009 SJ MINT:
    KP steering adaptor, Worx 228 intake [45.8mph gps]
    1987 WJ650:
    6M6, JD Intake Grate, 17/20, cheater pipe [47.8mph gps]
    1994 XiR: 830cc Superstock, PJS side draft, 13/18 swirl [53.7mph gps]
    1995 SJ MINT:
    [TBD]



  9. #9
    PWCToday Regular MitchInMN's Avatar
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    Re: 750sx VS 750sxi pro handling

    Thank you skisurf and vetteman! From what you guys have said I can definitely tell that tubbies are the next step regardless of what ski I stick with, and I think for now that will definitely be the 650sx for her. I have a scoop grate on both skis right now so that helps in the meantime. ill be looking around for some parts, as well as starting to think about an SXR. I would rather go that route than going to a superjet.
    1998 750sxi pro
    1994 750sx
    1989 650sx
    1987 550/650 swap
    1984 js550

  10. #10
    PWCToday.com Is My Home Away From Home theVetteman3's Avatar
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    Re: 750sx VS 750sxi pro handling

    Sounds good. Definitely ride the type of ski you're looking at before you buy. For me I thought about a sxr but the 08+ SJ was the better all around fit. It feels like a modern take on a 550 or 750 hull ski, with tubbies, quicker steering, better ergonomics, and no porpoising. The first gen sxr is a great ski. It feels a bit big and the handling is not nearly as playful as the 08+, that ski is glued to the water. It is a modern take on a 650sx, just made to feel more nimble than it's size would suggest. In my mind that hull is perfect for the 1100 engines. It easily swallows that weight and the nice linear power and big slugs of torque is so addictive. Right now I'm looking for the best of both worlds which is why I'm working on a swap not too often done, a K1100 engine in a 08+ SJ.
    1985 JS550/800 "Pretty Red": Newmiller 800, Rhaas 750 pump conv. [56.3mph gps]
    2009 1100 SJ:
    Kawi 1100 build in progress
    2009 SJ MINT:
    KP steering adaptor, Worx 228 intake [45.8mph gps]
    1987 WJ650:
    6M6, JD Intake Grate, 17/20, cheater pipe [47.8mph gps]
    1994 XiR: 830cc Superstock, PJS side draft, 13/18 swirl [53.7mph gps]
    1995 SJ MINT:
    [TBD]



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