650/X-2 dream x2 build ideas

[Austin]

So i am thinking of buying another x2 and this one i would like to do hull mod and the whole 9 yards. so far i want to...

chop the back off
figure a way to lighten the hull
do a launch nozzle jet
streering mod

if any one has any ideas please let me know or if you gjys have done this in the past any help would be great.i want to be able to do atleast barrel roles on this ski . motor wise i have plan for a twin carb 750 with all the aftermarket.

 

[Vumad]

Click the link ----> http://www.x-h2o.com/threads/25705-X2-mods

The 1st link on that page is the "Wishlist" thread, which is the "I don't have it but I wish I did" lists.

The other lists are a long appendix of mods and build threads.

What is a launch nozzle jet? Like a trim nozzle? X2guy (I think it's him), offers a mod to the stock trim selector to have trim control.

Other stuff sounds good. I might suggest Tom21 tubbies or a bottom fill, but if I were you, I'd ride the ski stock before you modify it.

For weight, Lose the big rubber mounts the stock waterbox sits on. Also, One way to lighten it is to cut all the fiberglass out from under the seat, fill with foam and glass back flat, but w/o the extinguisher, you wont be legal.

 

[Austin]

I own 3 other x2's right now and I just looking at going all out on one. Mine are all stock hulls but tons of motor stuff done to them. I just want to make one that will be a great freestyle ski. So the plan is to lighten the front as much as possable then do steering and nozzle mods.

 

[Vumad]

I have a front fill and Tom21 tubbies atm. I think the ski gets too wide and flat, and would perform better with just the tubbies or the nose fill, but not both. I want to cut out the front of the hull and blend in a superjet nose with tubbies (it's more V-shapped). Steering mod is good. I have an accusteer but you can do the same thing by extending where the cable mounts. You can also modify the nozzle to extend the mounting location on the nozzle. Both of these increase throw. You can bore the nozzle larger, but only if you are running a 750 or a completely worked 750 motor. The easiest thing to do with the trim is buy the X2guy setup. However, if you don't want to spend the $230 on that, you can modify the stock trim slector to remove the selector and replace it with a cable and a bike lever, which would allow you to have a pull up trim. If you search posts by users, I think Legdrag pete (maybe legdragger) did this mod on his orange X2.

 

[Austin]

Yeah my plan was to do a brake lever and cable then mod the nozzle for the lever set up. Then with the tubbies Or filling the bottom and doing a sxi pattern would weigh down my ski or do you think it would be worth it. I don't have any problems with the handling as it sits right now. My main things I want do fix is alot harder turning and the ability of get big air on flat water sence I live in Colorado I don't get the chance to hit the wake. My other idea is i have a really small v shape water boxes out of my 550's. I want to use that the send the exaust yo the rear or the right side thei have a small 2 gallon fuel tank that I would like use to lighten thE front then I would cut 3 inches off the back then cut out all the stuff under the seat.

 

[Vumad]

Modifying the nose will add weight. My X2 is a heavy pig, but I did a lot to the nose. If I do the SJ nose, i was going to cut out the X2 nose, which I did not do the 1st time. If you are happy with the stock nose, leave it alone. Any modification will likely add weight, especially if you do not cut away some of the old hull.

For the trim selector, before you modify anything, try this. Dismantle you stock trim selector, all you want left is the mount and the wheel the trim connects to. If done right, the wheel will spin freely since there is nothing holding it in place. Then, put a brake lever on your bars and run a 2' cable to you stock but modified trim. Squeezing the lever spins the stock wheel, which pulls the trim. No modification of the nozzle or cables required. All you modify is the selector and add the lever componets. This is not the best way, but it is ceraintly the cheapest way, and if done right, is equally as effective.

 

[Austin]

so i was also thinking about what else i couldto lighten the front and ivthink i want to put a small 2 gallon tank in the front then i have a v shape water box outof my 550 that sends exhaust to right side then iwill run it to the rear. then i will also remove the big black rubber fronder the water box too.

do you guys have any good ideas for what to do in the seat area?

 

[Murdock]

Where in Colorado are you? I have a friend that rides his buddies x2s at blue mesa.

 

[Austin]

i live in loveland just north of fortcollin. where is blue mesa?


Wh at do you think of running a 701 yam motor? i need somthing with alot of low end hit. or else ive heard that a 750cylinder will fit on a 650 case so i thought that it would be inexpencive for a 750. is that true?

 

[kevbo]

Get a Yamaha 144 pump and shaft from a raider. This will place the pump aft and provide plenty of inlet area. Move the steering aft so that you are standing at the rear of the ski. Now your X2 is in the same configuration as as a freestyle standup except slightly more nose heavy. Shortening the hull by a lot is easy and will work if you are small. A heavier rider should keep most of the stock length and stand more aft. Another option for big riders may be to shorten the hull and add area to the sides so that the aft does not narrow. This is probably the easiest method since the sides could be removable. All the other stuff people do like filling the bow is just for looks.

 

[leedesigns148]

Hello, I was reading through your thread and saw that you were looking to do some modifications to your x2 that I've done to mine and thought you would be interested in some of the ideas- such as the steering and trim mods. They are in my photos under new x2 project. All the mods work well and didn't add any weight to the hull.

 

[Austin]

Leedesigns148-That ski looks amazing. I am definitly doing that on the front of my ski.

So i decided to go with that on the front then up top were the bars are i will glass that all and smooth it out were the trim and fuel switches would be. then on the back i want to shorten it 3inches then i want to lower the seat 1.5 inchs and cut out all the crap under the seat and fill it with foam. I just down loaded photoshop so tomorrow i am going to try to make some sketches on it like Vumad did in one his threads.

On drive train I think I found a 750 with 650 electrons in it. then i will do west coast pipe. high comp head. then found some dual 46's pretty cheap. stock reeds. What prop size do you think I should run with 750 for really low end hit?

 

[Vumad]

Every 1 I talk 2 says have a 13/18 SXR prop cut by impros 2 fit. I haven't cut or installed mine yet. I have a 650 10/18 and it seems lacking.

 

[Vumad]

Get a Yamaha 144 pump and shaft from a raider. This will place the pump aft and provide plenty of inlet area. Move the steering aft so that you are standing at the rear of the ski. Now your X2 is in the same configuration as as a freestyle standup except slightly more nose heavy. Shortening the hull by a lot is easy and will work if you are small. A heavier rider should keep most of the stock length and stand more aft. Another option for big riders may be to shorten the hull and add area to the sides so that the aft does not narrow. This is probably the easiest method since the sides could be removable. All the other stuff people do like filling the bow is just for looks.

What are the steps and parts required 2 do this? Pump, shaft, bearing housing, kaki coupler for the yamaha shaft? What mod 2 the hull 2 fit? What steering cable? Etc

 

[Vumad]

Hello, I was reading through your thread and saw that you were looking to do some modifications to your x2 that I've done to mine and thought you would be interested in some of the ideas- such as the steering and trim mods. They are in my photos under new x2 project. All the mods work well and didn't add any weight to the hull.

What is the rise on that steering over stock/umi/accusteer? How far back did u move the steering? Dix u shorten the hull and if so how much? What ride plate? I'm sure it's more comfy 2 ride with the bars that high, but how hard is it to get on? Can a shorter girl with little experience get on with those bars?

 

[leedesigns148]

This is how I did it all. The steering is 5.5" back,I made the stem it is 1.5" taller,The battery box is under the seat now and im making a custom water box to go where the Battery was to lighten the front up a bit more and im building a aluminum gas tank to fit where the water box was.Im still not sure on the motor I have the stock motor but it has a bad crank and needs a rebuild but Im not sure what kinda mods and power it could make compared to just putting a 750 in it.

 

[Austin]

How possable do you think it is to build a fuel tank for under the seat. it would be a small tank. also This is going to be hard to under stand but when the seat is off I was thinking of make a rear acess to the motor so cut were the seat is on the back of the motor then make a new fiber glass seat pan with good seals in it. so then i can mount amy batterie back there and have afuel tank under the seat then I will have full access to everything. My main question is will i be loosing main support on my ski? I know this sounds way out there but is it possable with still having good structure? ALso I want to move my stearing back like leedesigns did. thats a great idea.

 

[leedesigns148]

The tank idea is very possible and a good way to but the weight back further. It defiantly can be done. Ya could remove the inside and build the tank to the size of the seat this would give ya 4-5 gallons for sure. I don't think the other is a good idea. Think it would make it weaker.

 

[Austin]

Okay I figured that wasn't going to work. on the fuel tank what would be the best thing to build a tank out of. The only thing I can think of it is go aluminum. But Id prefer to do a plastic so see fuel level but my main concern of aluminium would be were the gas cap goes on it might be expensive to find one. Also I only can weld steel i havn't done aluminum yet. Does any one have any ideas?

 

[leedesigns148]

you can use the cap and its counter part from your x2 and some sealant on it and it works fine. I made a aluminum tank for one of my snowmobiles and I used the cap from a jetski. worked good.