Cen waveshark

[bomb-proof]

Anyone running one? From what I have seen, its probably the best pwc out there....anyone think differently? Does it seem fast enough? I am looking to throw a brushless in it with 12-20 cells.

Its either this, or a zig zag 2 with a 400 sized BL on 8-10 cells.

[Chris LaPanse]

That zz2 sounds fun, I should try it.
As for the pwc, yes it's the best one out there for speed. The Kyosho one (i forget what it's called) is better for scale appearence (no rooster tail), but it doesn't sound like that's what you care about.

[bomb-proof]

yea, I just want something overpowered and easy. I have no intrest in scale appearance for the most part, and certainly dont have the intrest in setting up a really fast v hull or anything. I can imagine the time it takes to get those things to do what you guys are doing, and I dont wanna take it to that level. I have the BL boat stuff already with nothing to put it in.

[RS4rally1124]

u want somethin fun then do what i did to my old kyosho and put a jet drive in it. makes it hella fun

JT

[bomb-proof]

yea, I though about putting the jet drive in the Cen ski, but wasnt sure how well they work. If it got more power to the water I would do it no doubt.

[Chris LaPanse]

Actually, a surface prop is more efficient than a jet drive. The fastest boat of the ones mentioned above would be a CEN Waveshark, and the ZZ2 would be the easiest one to just overpower and have fun. A good place to see the CEN ski in action (modded) is www.offshoreelectrics.com. They also have some for sale that have been modded to do 32mph on 16 cells or 23 on 12 cells. That is about as fast as you would probably need at first (although we all need to go faster eventually). You also mentioned that you already have some BL equipment, what brand/model is it? This can make a big difference on what would work best with it. Good luck with whatever you choose.

[bomb-proof]

I have a barracuda 80, and will probably go with an 11XL or so for the motor. I havent seen anything like this yet, except in the full race boats. The benifit to me on the ski is, I do have a lake here with boat wakes to jump, and the ZZ2 may not like the chop. I am sure it will toss the ski around as well, but should be fun.

[Chris LaPanse]

Either one would be fine in the chop. The zz2 would catch some good air off the waves, and if it flips, it is self righting. The waveshark, when it is sealed with hatch tape, is also self righting (look at some of the vids of wave jumping from offshore electrics. For more info on the Waveshark, ask Pagemaster (Steven Vaccaro). He is the owner of OE, and has been modding CEN boats for quite some time now.

[bomb-proof]

Yea, I have been checking out Steve's ski, looks like a pretty cool set up. I am kinda leaning toward the ski because I do a little 1:1 jetski racing as well, and the ZZ2 looks a like goofy, but is still pretty cool.

[Andrewg]

that hull will be way overpoweredwith brushless. thi is a shallow vee ok on flat water with no breeze. High pseed chop or wake with blow it off the wate rand the brushless will be more vulnerable than the 700

A 700 BB *8.4 or SS1 is good in those

but you need a fullers wedge rudder for straightline stability, turn fins and a X642-X645 prop

use 12-16 cells - more cells use a smaller prop and say 2200's instead of 3300s

this setup is quick and relaible

savethe brushless for a sport hydro or mono with a deeper vee

[Chris LaPanse]

It might blow of the water, but that much power makes it fun :D
It can be self righting (seen any of Steve's vids?), so if it blows over, no problem.

[Andrewg]

Chris

I am a CEN dealer. I was hotting CEN hulls since before Steve started his buiness. I have run a few.

I would not run a brushless in that hull. You may like you boats upside down. I prefer hulls which I control. I cannot recommend to someone the put their $150 controllerat risk not to mention radio servo andthe boat as a whole

In a boat which is constantly flipping, with less than perfect water resistance The experience of a vast number of modellers show brushless controllers are vulnerabale.

That means expensive. I dont like replacing brushless controllers.

[bomb-proof]

The handling and stability isnt my biggest concern by any means. Im really not a boat fan, but the pwc's are cool. It seemed to do great on 14 and 16 cells with the 700bb, I dont think it will be too great of an issue to go a lil faster. Im sure compared to a real race boat it will seem like junk, but I dont want a race boat. I want something I can take to the lake and beat on, and take to the beach and see how far it will fly. I dont mind rolling into the power to get it going, I like having that much power on tap. I dont really wanna do full on speed assaults up and down ponds, I just wanna beat around with it.

[Chris LaPanse]

Which I think the wave shark would be fine for, despite what Andrewg says. If it flips occasionally, big deal (just make sure you've got everything waterproofed and flotation, just in case), it should just flip back over. Good Luck, and I think you'll have a blast. Also, they seem to do fine at 35mph with a nitro engine, so they seem like BL shouldn't be that much of a problem.

[Andrewg]

Chris

Tests in Radio controlled boat modeller indictae ethe piped Wave Shark runs about 22 mph. Worked ones run approx 28 mph. The fastest RTR nitro was the Ms Bud it topped out at 25mph, poor compared to the 700 based setups. In nitro setups water entry is not such a problem. If you run a lot of brushless you will know how sensitive they are to water.

The main problems are the prop which is poor and the rudder and bracket. The rudder is a subsurface design and doesnt work with a surfacing drive system. The bracket flexes. Once speeds get into the mid 20's the bracket flexes. With a 700bb i have had mine jump 2 feet in the air while runnign in astraightline becuase the rudder twists. You can stifen the bracket by CAing in birch or replacing the whole braket with metal.

The subsurface shape of the rudder also dioesnt work well in the wash of a surfacing prop. A wedge rudder ensures there is a positive pressure on the blade face and provides better control in a straightline and much better turning.

As well as the rudder you will need trim tabs and turn fins to prevent porpoising which emerges at higher speeds and to allow the boat to turn at high speeds.

Again I would emphasise that brushless systems are far more prone to water damage than non brushless. And an upside down boat wont last long. At 30 mph impacts the deck/cowl will fatigue and crack and then you are in strife.

A 700 based system will give you longer runs and good speed.

I havea lot of experience wiht the se baots and would recommend brushless if it was worth it

[Pagemaster]

We have run the boat at above 30mph in straight-line with absolutely no problems. Even in the turns with the trim tabs and plastic rudder the system works well.
Videos can be seen on our site. http://www.offshoreelectrics.com/Videos/wave_shark_modified.wmv
This doesn't mean that the rudder doesn't need to be upgraded, its a plastic rudder, so there's room for improvement. Keep in mind making after making the rudder rock solid, the transom will need strengthening. Because the plastic rudder has some "give".

The boat does need trim tabs. Andrews correct about water and brushless power. At 20-30 mph speeds our crashes have not caused problems. But at higher speeds and more weight I can foresee problems in a roll over.

The 700bb and a good esc making rc boating very enjoyable at fun speeds. Brushless pushes the performance/mph up but also expect the problems that come with high performance.

Steven Vaccaro
www.OffshoreElectrics.com

[bomb-proof]

Thats about what I was expecting Steven. I dont mind beefing stuff up, I have a CNC mill that can handle the job all day long. I am aware of the BL problems, I have ran countless systems in trucks. I think it would be fun BL, and I dont see any major issues...if its unstable at top speed, I can play on wakes.