1990 Square nose superjet build for freestyle

M

misuperjet

Location
Belleville, MI
kevbo said:
How big are you? That will determine how much you can cut off the rear and how long the pole needs to be. Get an idea of what youre in for by simply removing the ride plate and see if its still planes well enough. Start whittling away at the rear of the hull until it gets a little hard to plane. Then shorten the pole. Any ski that can flip without a big wave will be too short to ride fast, they just start hopping. Plus the rider is put into a precarious riding position with the required 2 foot long pole. Take your time and get some experience. Remember the square nose superjet has very weak sides so rolls must be landed on the bottom, not the sides.
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I am 6' 155-160 pounds. Thanks for the advice. Right now because of my weight i have a hard time doing tail stands on this and my neighbors X2. The back just won't sink for me without a hard 180. Even then, its hard to get it to stand up. I will try the ride plate and from what i understand from you, keep it from planing easy? I assume that helps with some of these tricks.
Jhucke said:
No one told him to sell anything.

Edit: to answer his question for hood holds and grips, get your tools out because you will have to cut your stuff up yourself. No one sells hoods with handholds anymore especially for a squarenose.
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I figured I would have to do that. Just don't have any good examples of how to do it or where to put them.

bored&stroked said:
-62T motor is great for a superjet don't worry. Its port timing is higher then a 61x but lower then a 64x [760]. You'll need to put M8 helicoils in the exhaust manifold holes to use the 650 and 99% of aftermarket exhausts, no biggie.
-Front sponsons are for turning, not for freestyle. I can't stand them on squares.
-Of course footholds. Always.
-raider pump and superjet pump are the same thing. Raider trim doesn't move nozzle enough to be worth the effort swapping it IMO.
-No point in swapping electronics besides the CDI. Everything else is the same basically. 701 cdi has a higher rev limit hence why its worth the effort. Use the raider electonics as backups.
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-I picked up a stock 701 exhaust for a newer superjet (08+). I assume that will be good enough for hood clearance and will bolt onto the 62T without issue? Guy wanted $60 for it so i thought it couldn't hurt to try it before i modify or but an expensive aftermarket one.
-I plan on doing the foot holds but the more i think about it, i cant decide on just making a wide tray or footholds. Wide tray seems like a ton more work compared to just footholds.
- Makes sense. Sounds like a large consensus is to avoid trim on this ski. Wouldn't be worth it. Just get a different one and make the motor/prop upgrades to get it to pop out of the water better.
Myself said:
Must be a ported monster already........I see a damn primer.
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Oh is that a joke? it was so dumb i couldn't tell... or maybe you didn't read it had a 650 in it? its the way i bought the ski. plus, whoever had it before me put silicone sealant on the vent for the tank and I have to fix suctions issues by digging all of that out and putting the correct valve/plumbing on it. Also, they put silicone on the fuel pickup and only run the fuel through the reserve pickup. Not sure why they did a lot of what they did but I guess I should have also clarified any value added feedback is welcome.
 
WFO Speedracer

WFO Speedracer

A lifetime ban is like a lifetime warranty !
Location
Alabama
Wide tray is the better option it gives you better control of the ski , footholds on a 650 powered full length Superjet IMHO is pointless
 
M

misuperjet

Location
Belleville, MI
WFO Speedracer said:
Wide tray is the better option it gives you better control of the ski , footholds on a 650 powered full length Superjet IMHO is pointless
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OK thats what i was thinking. Just dreading all the fiberglass work lol. It will have a 701 62T in it by the end of winter though. So it won't have a 650 anymore! The 701 has 155 compression in each cylinder and i just picked up that 08+ exhaust so hopefully it will just drop right in. The wide tray was also suggested by a friend of mine, saying it was way more comfortable to ride no matter anything else you do to the ski.
 
M

misuperjet

Location
Belleville, MI
I will take some more pictures of the engine bay to show everyone what I'm dealing with. It isn't too bad but there were some questionable things done to the ski that I will have to go back and fix during this build. I'm mechanically inclined but I am no tech by any means.
 
WFO Speedracer

WFO Speedracer

A lifetime ban is like a lifetime warranty !
Location
Alabama
The fiberglass work is not that bad, you have foam to lay up the glass against, my recommendation is to coat the foam with epoxy and let it dry, this gives you a good solid surface to lay the glass up to, scuff the epoxy with 80 grit then start laying the glass, it doesn't have to be pretty or perfect as it's going to be covered with turf anyway.

The ski has been redneck repaired no biggie I live in Alabama I am used to seeing it.
 
Jhucke

Jhucke

Location
Wisconsin
misuperjet said:
OK thats what i was thinking. Just dreading all the fiberglass work lol. It will have a 701 62T in it by the end of winter though. So it won't have a 650 anymore! The 701 has 155 compression in each cylinder and i just picked up that 08+ exhaust so hopefully it will just drop right in. The wide tray was also suggested by a friend of mine, saying it was way more comfortable to ride no matter anything else you do to the ski.
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Do you have a budget in mind for what you're planning to do?

The primer thing, honestly I have no idea what that guys deal is with primers, its fine..
 
M

misuperjet

Location
Belleville, MI
WFO Speedracer said:
The fiberglass work is not that bad, you have foam to lay up the glass against, my recommendation is to coat the foam with epoxy and let it dry, this gives you a good solid surface to lay the glass up to, scuff the epoxy with 80 grit then start laying the glass, it doesn't have to be pretty or perfect as it's going to be covered with turf anyway.

The ski has been redneck repaired no biggie I live in Alabama I am used to seeing it.
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Yeah i'm just going to have to do it and stop complaining about it haha.

Past that, I'll pick up the pieces and do everything the right way. I did this twice on a couple of 1997 seadoo GTX's. So I'm used to starting from scratch and re-doing things. Just sucks when people remove parts or put silicone in places you can't easily get it out.
Jhucke said:
Do you have a budget in mind for what you're planning to do?

The primer thing, honestly I have no idea what that guys deal is with primers, its fine..
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Budget isn't that much of a concern but I want to stay within reason of what would make sense to actually do for this ski. I don't mind spending money but only if it is worth it on this ski. Like I wouldn't put a race motor in it or $4,000 set of poles. But upgrading to the maximum of what the hull can take would be what I'm targeting. So with the advice of not doing the trim because it isn't quite worth it on a square nose, that would be my limit there. If a stock SN pump is plenty for a semi-stock 701, that would be the limit there.

My eventual plan is to buy a better hull that can do the backflips and better tricks. Just not at this time. I want to learn on the square nose. I can do some tricks already but still far away from a better ski's potential.

I race cars, shifter karts, and anything else I find fun. I know you have to pay to play and get reliability.
 
M

misuperjet

Location
Belleville, MI
SUPERJET-113 said:
All this and nobody has mentioned reinforcing the hull and hood(or aftermarket hood). Metton is not your friend. One good landing on the side and metton splits in half.
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I already had re-enforcing the hull on my build list. That is probably why no one has mentioned it. I will pay close attention to the side areas and get pics of everything so people can comment/suggest if I'm doing enough.
 
WFO Speedracer

WFO Speedracer

A lifetime ban is like a lifetime warranty !
Location
Alabama
(Yeah i'm just going to have to do it and stop complaining about it haha.)

bunches of threads here on the wide tray mod over the years, get to reading.
 
GRiN

GRiN

Location
Bay Area, CA
Check out my square nose build thread and feel free to ask questions... now, my ski is geared towards surf and freestyle, but there are definitely things I would have done differently (and eventually may change)...and for what it's worth, I LOVE my ski, but have already purchased a Rickter hull to build for flatwater freestyle.

I basically never use my trim (I lose all my bottom end grunt to blow-by). I HATE my glassed in footholds (they hurt like hell to kick into even with padding so the top of my feet are always bruised), should have gone wide tray with adjustable holds... my ski aint for cruisin'... if you do end up modifying the hull, just understand that it may no longer be capable of comfortably "taking it easy"... I now need to build another ski in order to enjoy racing through the sloughs with my buddies --- oh darn lol

My square will probably flip and roll in the surf once I get the confidence to huck it (I've only been riding stand ups for 6 months and still have a lot to learn), but it's shortened, rockered front and rear, lowered hood, and reinforced all over with multiple layers of carbon fiber, so it's a far cry from what you have today...

What is your budget for this build?
 
M

misuperjet

Location
Belleville, MI
GRiN said:
Check out my square nose build thread and feel free to ask questions... now, my ski is geared towards surf and freestyle, but there are definitely things I would have done differently (and eventually may change)...and for what it's worth, I LOVE my ski, but have already purchased a Rickter hull to build for flatwater freestyle.

I basically never use my trim (I lose all my bottom end grunt to blow-by). I HATE my glassed in footholds (they hurt like hell to kick into even with padding so the top of my feet are always bruised), should have gone wide tray with adjustable holds... my ski aint for cruisin'... if you do end up modifying the hull, just understand that it may no longer be capable of comfortably "taking it easy"... I now need to build another ski in order to enjoy racing through the sloughs with my buddies --- oh darn lol

My square will probably flip and roll in the surf once I get the confidence to huck it (I've only been riding stand ups for 6 months and still have a lot to learn), but it's shortened, rockered front and rear, lowered hood, and reinforced all over with multiple layers of carbon fiber, so it's a far cry from what you have today...

What is your budget for this build?
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I looked at your thread! Thats awesome! I will start getting into it and definitely hit you up with some questions. What in specific are you referring to as changes you would do differently?

Budget explanation is above. Basically what makes sense to have maximum reliability but not unnecessary things for the ski. No trim or front fiberglass work. I would just buy another ski for that. This build is for smaller tricks and experience riding. Then i will buy a better hull down the line for bigger tricks.
WFO Speedracer said:
Pennzoil 40:1
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I'm a little confused lol. What is this referring to?
 
R

roman

Location
detroit
Im with the guy that hates primers. They are usually installed wrong, and they usually fail pretty quickly since plastics now suck. If it fails and its installed wrong, you can cause running problems. Unless you ride in the surf, I dont see why you would need it. Just carry a can of quick start spray for your first cold start if you really need it.


lol at the pennzoil comment.......Its funny how people get worked up about oil. I always run whats on sale, in everything. Hate me.
 
kevbo

kevbo

Location
dfw
If you want to do tail stands get a WR3 exhaust outlet and make a side exhaust just in front of the bulkhead. The rear exhaust will vent the pump once the ski is at its vertical balance point.
 
M

misuperjet

Location
Belleville, MI
roman said:
Im with the guy that hates primers. They are usually installed wrong, and they usually fail pretty quickly since plastics now suck. If it fails and its installed wrong, you can cause running problems. Unless you ride in the surf, I dont see why you would need it. Just carry a can of quick start spray for your first cold start if you really need it.


lol at the pennzoil comment.......Its funny how people get worked up about oil. I always run whats on sale, in everything. Hate me.
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WFO Speedracer said:
I use Stabil fogging oil for starting fluid , it uses propane as a propellant and it has oil in it, it works great, its a primer in a can for about $5.00 a can .

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OK I think everyone has the idea that I put it in and I really like it. I didn't and I don't care either way lol.

The good news is that the 62T has the original choke system on it and that will be going in the ski.

kevbo said:
If you want to do tail stands get a WR3 exhaust outlet and make a side exhaust just in front of the bulkhead. The rear exhaust will vent the pump once the ski is at its vertical balance point.
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Interesting. I will look into that. I originally wanted a side exhaust but I heard mixed reviews about them and just to keep the original outlet. I much prefer the sound and simplicity of a side exhaust.
 
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