94 Square Nose Handling for Racing

[Allistah]

Yeah these races are with DJSA. I don't race any of the IJSBA sanctioned races - what DJSA does is really good and it's a really good group of people so I'm happy. I'm not interested in going to the World Finals anyways.

You should for sure build that boat and come out and race with us next season! I've only been to two of their races and they do a really good job with them. But I'll be going to all of them going forward and next season so I hope to see you out there!

 

[High Speed Industries]

I've been told that DJSA holds some of the best races. They have real big tracks that keep it exciting. I'll have to find some people to carpool with.
It's cool that they have a class for the squarenose. I'll make sure to do a small build thread when I do mine.

Does anyone have a recommendation for front sponsons on a squarenose? I know blowsion has some race legal ones and tom 21 makes them too. Are there any other options out there?

 

[Allistah]

I'm going to get the Destroyers for my square nose. I've heard from numerous people that they're really good and the install is pretty easy.


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[Allistah]

Also, our last course up in lake Minden was HUGE. I had three splits and 4 laps on it about killed me. ;-)


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[High Speed Industries]

Destroyers make a big difference and they are super easy to install. I had them on my 08 superjet. Just make sure you run a good bead if silicone along the bottom of them. If water can get between the sponson and the hull it might separate from the pressure while riding. I learned that from experience.

 

[Allistah]

Ouch! Thanks for letting me know... I'll be sure to seal around the edges so that no water can get in. What do you recommend sealing it with?

Also for those that have had weights in the front of the ski, how much weight would you recommend putting in the front of a square nose with Destroyers on it and a fat boy on the back that weighs 230 lbs?

 

[High Speed Industries]

Just use silicone sealant. I installed mine and they lasted for a 1.5 years. I should have kept up on sealing them. I think the sealant came off after some time. I can imagine if you check them once a month and reseal as needed you will be fine. Blowsion has a pretty good warranty setup. They sent me a brand new pair of sponsons to replace my broken set.

 

[Allistah]

Oh ok, thats good to know they replaced it. For $400, thats a little sketchy to think one might literally rip off your boat and you're hosed. I'll make sure they get sealed really well.

Were they hard to install? I know each side sounds easy to install - but I mean, getting each side in the same exact spot so there is no wierd handling problems. If you're going top speed on glass does it act wierd with chine walk or anything? I'm guessing rough water is not a problem at top speed.

 

[High Speed Industries]

Super easy to install. All you need is a measuring tape. The instructions are very clear. The hardest part is getting over the fact that you are drilling 1/2" holes in your ski.
I'm sure I made the tubbies sound like crap, but mine actually took some abuse. Both of those tubbies have been hit on the ground, trailer, other skis, ect. If you take care of them you should be fine.
They didn't really do much to the high speed handling when you are going straight because they aren't really in the water in that situation.

 

[Vortex]

After obtaining info from some top level racers, I would advise against lead ballast. If you place a high density of weight in the front of the ski, the nose will just plow thru the water which can cause other issues besides just slowing the ski down slightly.

 

[FXNate]

I just installed an Ocean Pro (0) plate and an Ocean Pro steering nozzle on my SJ/SN. It carves like it's on rails and the chine walk feeling that SN's tend to have at speed is gone. This ski is quickly becoming one of my favorite skis. Just a great all around performer!

 

[khaos]

I just installed an Ocean Pro (0) plate and an Ocean Pro steering nozzle on my SJ/SN. It carves like it's on rails and the chine walk feeling that SN's tend to have at speed is gone.

Do you think this is more about the plate than the nozzle?

 

[Allistah]

I had one of those steering nozzles on my SN SJ about 20 years ago and it made the steering very sensitive all by itself. Wish I still had it so I could try it again.


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[FXNate]

Do you think this is more about the plate than the nozzle?

Yes.. I think it is primarily because of the ride plate. I've used the OP steering nozzles on a few machines.. I have one on my FX-1 too. I had OP nozzle sets on my conversion JS skis as well.. Love the way they make the steering feel.

 

[lanmine657]

I just installed an Ocean Pro (0) plate and an Ocean Pro steering nozzle on my SJ/SN. It carves like it's on rails and the chine walk feeling that SN's tend to have at speed is gone. This ski is quickly becoming one of my favorite skis. Just a great all

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what ride plate did you have before?

 

[King Kang]

I'm 6'4 205 and I run my SN around the buoys from time to time. Ditching the stock bars makes a huge difference. I run the Blowsion Kommander 3" extended 4 degree bars with ODI grips. It is way easier to control the ski and my wrists don't get fatigued as quickly.

 

[FXNate]

what ride plate did you have before?

On the SJ/SN I had the stock OEM ride plate before I installed the Ocean Pro.

 

[Allistah]

Hey all --

Just wanted to update this thread and ask a bit more about this subject.

I currently have a Rayce weight system in between the gas tank and the engine in my 94 square nose. I think its about 13 pounds there. I have installed Destroyer 2 tubbies, and have the sponson blade things on the back. I have a Worx Dominator race ride plate (the really long one) and a Jet Dynamics intake grate. The ride plate is shimmed with two washer on the rear two bolts. I'm about 5' 10" and weigh about 220 lbs.

I still have to ride with a 100% full gas tank for it to get that nose down and so it carves better. The more gas that I use up, the worse it handles. I'm thinking about adding more weight somehow to the front (somewhere) but I think that the heavier I make it, the slower off the line I'll be. I was thinking about hull extensions.. Anyone ever installed those? If you have, I'd like to know what you thought about them. I thought about shimming the ride plate even further but haven't tried that yet.

Anything else I can do that wouldn't be too expensive to try that would help me keep this nose planted down so I can carve better? I have a few extra Rayce weights that aren't in the ski so I was thinking of strapping them and duct taping them to the top of the gas tank to try it out but again, I'd prefer to not add weight if I can do it without. I was thinking that I may have to add more weight to this ski in the front because I have my own tubes above the belt line if you know what I mean. haha

Any pointers would be appreciated.

Thanks!

 

[Allistah]

Take a look at this video.. Watch the front end of this square nose. It's fully planted in the water and look how close the nose of that ski is to the surface of the water. How do you think they accomplished this? I wonder if there were any other mods done to this hull?

I was thinking of doing some fiberglass work to the chines on it to make them deeper like they are on the SXR but I'm hesitant on doing that...

 

[user_error]

as far as nose pressure is concerned, when you added the weights AND installed the blowsion sponsons you essentially counteracted one mod with the other. the sponsons help lift the front of the ski and add floatation (in addition to increasinfg carving capabilities). The sponsons increase the hull volume at the front of the ski, making it more buoyant, but you counteracted that with the weights, so you are back at square one.

i would try the hull extensions