300/440/550 6750sx hull mods?

[KaosFreestyle]

Any chance we could get some detailed photos of the setup?

I kind of want to explore having someone build me something like this because I cant weld.

 

[cookerq62]

Wishihada,
Try riding the ski at the begining of when you start riding with almost no gas in it. Then once you get warmed up and have put some ride time on it, or you run out of gas, top off the tank. The ski is going to feel slugish but focus more on handleing. If you feel an improvement you would prob like having a pump wedge in. I noticed that a pump wedge made the ski much more balanced (like you describe an sj) and would just blast through chop without porposing. You would prob like having a shorter pole too. A square with the stock pole length is almost unrideable for me(6'1" 260). I can't get far enough forward and my legs hit the bars constantly. Another thing that made my ski more rideable was the wetwolf cone on both my sj and 650. The hook up is quicker, softer, and more predictable while giving you more low end. I tried shimming my rideplate and found it made the ski real skiddish and it would become unpredictable at higher speed turning and would tend to sort of catch coming out of a turn. I got my pump wedge from mm-marine for about $10 and that was by far the best mod I did to my 650sx. THe pump wedge will also get you up on plain sooner and at a slower speed. Hope this helps

Ryan

 

[suva]

I thought that your skihandled pretty good the one time that I rode it. I really liked the pole that you have on it. Can't wait to ride it again this spring. . .

What you should do is buy it from me and swap motors with your X2 so you have a bad a$$ X2 and a beat a$$ sx with a cobbled together handlepole (that turned out pretty good)

 

[suva]

Or just ride it next spring when my lazy a$$ doesn't get a superjet.

 

[Snackem]

I'd love to buy it from you but the wife would kill me.

 

[dbrutherford]

For starters, get a Jet Dynamics ride place and deep intake grate. The JD plate actually made a noticable difference on my friends 650 SX! All other ride plates I ever used didn't really do all that much. The JD grate will keep the ski hooked up and not slipping when you are bashing through small waves.

I once had an AC hand pole that I was told was stock length when I bought it used. Well it had to have been shorter because it felt like I was farther up in the tray riding my 650 SX compared to my friend's 650 SX with a stock pole. Also wider bars help.

Now as far as handeling, you might want to try some rear 800 SXR sponsons from TBM or R&D, ect...

Otherwise tubbies and a set of rear hull sponsons may do the trick. I have a spare piece of rear hull I was going to make hull extensions from. 20 bucks plus shipping and it is yours. It is an actuall 650 SX rear portion of hull. I already cut one extension out from it, just never completed the project.

A bored nozzle and pump wedge will help too. Angle the nozzle down, that helps reduce the poriposing.

Also you can just take a stock ride plate and weld an extension to it, this helps.

Really they are just like every other ski.... you just need:

a bored nozzle, an intake grate, a ride plate, a pump wedge, pump blue printing, pipe, carb, hand pole, do i need to continue?


I did all of that crap to my 650 SX and I still liked my X2 more, next ski I get is an SJ!

 

[beachedflunkey]

dbrutherford, damn dude that's just about the opposite of what I'd shoot for when trying to make an sx handle like an sj :boggled:

Greg, next time don't be skeered of the waves and come all the way out to where we are riding! Haha j/k I know there was more to that story I can't wait to take that beast out for a spin out of the flats! :bananalama:

 

[dbrutherford]

sorry man I have never ridden an SJ Roundy or surf


But still the JD stuff and shorter pole will help a bunch. or just a lot ride more, you will adjust.

 

[suva]

Any chance we could get some detailed photos of the setup?

I kind of want to explore having someone build me something like this because I cant weld.

I'll get some more detailed pics as soon as I track down a digital camera.

 

[Freestylin-FX1]

Just remembered I used washers on the wifes 650sx. (and an OP rideplate) Anyway get some medium sized washers take off your ride plate put 1 washer under front bolt each side. Then add 2 under the next and three under the next. You will create a slight angle that will in turn push the nose down a bit more and youll get that plowing through waves bit your after. At least you shouldnt have any problems on flatwater anyway surf I have no experience. As to the leaning way that the turn thats just how it is. Just so you know My wifes ski has no Intake grate,Ocean Pro Ride plate and steering nozzle and still running the stock pole as well. Seriously though try the washer idea you can taylor it to your liking also but youd be surprised how big of a difference it can make

 

[dbrutherford]

I did the washer trick and it made my ski handel like crap!

But then again I had the ride plate jacked down so far anything would handel like crap.

I don't recommend going more than three washers on the rear. After so many it will cause irregular handeling.

My ski would tuen ok then just swap you over like a crotch rocket swap and crash. Not cool.

DBR

 

[beachedflunkey]

Porpoising is a good thing for freestyle&surf, imo. If it's out of control you are not putting enough weight forward. dbr, I definitely agree on the shorter pole. Sounds like wishihad's trying to take the ski out today but I won't be able to make it :banghead:

 

[dbrutherford]

yeah I wish I had about a -4" pole!

Well I am a little confused about a wedge. I only rode flat water aka the river, so I put my wedge in my 650 SX to point the nozzle down.

However on my X2, I always run the trim in the up position. If I put it in down1 or down2, it makes the nose want to dive on turns and burry itself. I like it in either nuetral or up.


But I have no relavance for surf so make your own decisions.


Dave

 

[beachedflunkey]

I rode this ski yesterday. When I rode it back in May I just couldn't believe the power but didn't pay much attention to the handling.

It handles/turns awesome if I lean way over the pole but that got tiring after awhile and if the ski got away from me in a turn I'd get dunked. The pole seriously sucks - what is up with the steering pivot being dropped 12" below the top of the pole and angled downward?? That and the 7deg narrow bars have definitely got to go. I had the grips biting at my ankles to keep a comfortable balance :bigeyes:

Other than the pole, more throw would help pull out of turns easier. Tubbies might help keep it from dunking so easy but of course then you are driving up the $$. I didn't get a good look at the grate but a ride plate w/o grooves in it would be worth a shot if you have one available.

Great job on the motor :biggthumpup:

 

[dbrutherford]

Yeah if he has the stock bars..... they really suck!

I think that a quick turn will really help him out as well as wider straight or 4 degree bars.

On my X2 when I removed my quick turn I almost couldn't ride at all compared as to when I had it!

It makes balancing a lot easier like he said when he was in no wake zones on his knees. You just barely turn the bars and you can correct the rolling over ot one side or another.

Do the plate, wedge, grate, pole, quick turn, bars and that will be a big plus.

But then you will just want more power

 

[wishihad]

Yeah if he has the stock bars..... they really suck!

I think that a quick turn will really help him out as well as wider straight or 4 degree bars.

On my X2 when I removed my quick turn I almost couldn't ride at all compared as to when I had it!

It makes balancing a lot easier like he said when he was in no wake zones on his knees. You just barely turn the bars and you can correct the rolling over ot one side or another.

Do the plate, wedge, grate, pole, quick turn, bars and that will be a big plus.

But then you will just want more power

I found somone with 4deg should I hold out forthe 0deg ones?

 

[dbrutherford]

I had 4's on mine, seeemed good. Some people like 4's some like 0's. It is all personal prefermace. Just make sure you get the "extra wide" bars!!! UMI calls them the "freestyle" bars.

DBR

 

[beachedflunkey]

Zero. derm or lovin might have a set here in a couple months if they go xmetal.

 

[wishihad]

Alright I've finished shortenening the pole -4.5 also moved the bars up a bit and and changed the angle to be more inline with the pole and modded the unit to work like a quick steer which also increased the throw. PITA!! Anyways found a set of 0deg bars just have to put them on and modify the pad and i should be back in buisness. Also, going to try to stiffin my pole (ha) and replace the rideplate but I'm having a hard time finding a resonably priced JD concave rideplate.

 

[dbrutherford]

Yeah they are $125 new. I see them go for $100-135 all the time on eBay. If you don't have your heart set on one of those, try an Ocean Pro skegged plate. They won't slide out like the stock one will. A Jet Sports plate is a direct copy of the OP plate if you can find one of those.

DBR