Outer Limits SV 29 Technical Analysis
 

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Awesome-ness!

Can someone explain in layman's terms, the technology behind this hull's bottom that propels the boat to 100MPH with a single Racing Merc 600SCi engine?


Thanks in advance!


Photo Credit: SportBoat Magazine

Your Power & Performance Source


I got my copy!

http://i1238.photobucket.com/albums/...er2012_004.jpg

Pretty simple... the hull works and is safe, go figure...

Four steps and a pad....

Maybe it's the color orange? Dcb also?

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Perhaps we can stick to the technical side of things in this thread

and understand just how OL makes the observed speeds with a single 600sci

3rdchildhood's : "4 steps and a pad" is a good start in our technical analysis.





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"4 steps and a pad"
That's probably about the best you will get. I wouldn't wait for anyone from OL to come on here and give a dissertation on their bottom technology, especially considering your connection to a boat builder.
Suffice to say that it not only works, but works quite well. What an awesome little boat. I didn't expect anything less from the guys at OL.
Eddie

Is the 600 Sci stock?:party-smiley-004:

lots of unobtainium, a little billet unbreakium and I heard from a secret inside source who wishes to remain anonymous that they are adding a few grams of unflipium to the unbreakium alloy.

2005 39 OL quatro with 700's ran 112, 29' full pleasure in testing phase with a stock 600 runs 102.. 2 patents on hold for the technology they use on the lay up on the hull.... boats are fast, and setting the bar for everyone else who wants to go fast

That's a nice looking "Pickleknife" :D

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"... 2 patents ... on the layup " !



wow, that's what I'm talking' about.

When the patents get approved, I'd like to understand what those are. When the patents has become public knowledge.


Today's cutting edge technology, becomes tomorrow's standard technology for builders. Then (we) the consumers benefit...cats and V lovers alike!






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A builder can only generate new business ( by way of new sales ) by making the package's speed reproducible. It would only hurt OL if they "touched" the 600sci thus generating more HP. It would hurt them when a new customer orders the SV29 and puts a 600SCi only to find out that he's not getting the same speeds as the factory, editorials, and boats testers speed claims.


Reproducible performance is what many builders (OL included) will try to attain to get new business and repeat business.


For example, a customer comes and sez I want a 30 foot cat with twin stock 300XS to go XXX MPH, we would tell them:

• get a 4" CMC transom jack
• order yourself propeller "Y"
• spin the props out
• align the bullet of the nose cone at "Z" location
• do a few speed runs and begin balancing the cat with weghts in 6 different hull locations
• trim the propeller shaft so that when at full speed, the shaft runs parallel with the bottom of the hull
• too much positive trim causes wasted propeller thrust (an example of an un-balanced cat)
• then report back to the factory what speeds are being observed with this setup
• might suggest sending the 300XS lowers to Wilson Custom Marine to allow the prop to get a cleaner water bite

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I would not underestimate the aerodynamic advantage this and other later OL boats have. I can tell you in our SVL at 90 MPH 78% of our thrust goes to water drag and 22% to wind drag. As you reduce the wind drag the speed does not increase at the rate the numbers would imply because the water drag is greater.
It is very important to have a good aero design to get max results not just for wind drag but also for where and how much wind drag creates pressure (weight at speed) on the hull.
Steve

You are so correct about the importance of aerodynamics Steve. When I was recenty at Hustler dialing in the new 39 Rockit with a pair of my 1100's, I was talking with Joe, the owner of Hustler. He was telling me about the process they went through while designing the Rockit. I don't remember the exact numbers, but there was like a 10-12 mph difference in speed just by redesigning the deck. This is in a 115 mph boat. There was nothing noticable to affect the air flow across the deck. It was just the way the air spilled off of the deck that the boat didn't like. We are talking about a 10% difference. That's huge. It's kind of hard to believe but it's absolutely true.

I'm sure that OL goes through a similar design and testing process with all of their boats. I had the pleasure of climbing around the 29 and talking with Mike at the Miami show and I can say the boat is incredible. They really hit a home run with the boat. I didn't expect anything less from them though. They build some absolutely incredible boats.
Eddie

This was the same concept Baja was starting to do on the 30 and 35 Outlaws. They did extensive wind tunnel testing on the decks and by reducing the wind drag, were able to increase the speed of the boats in the water without stepping the hulls. I'm sure the SV 29 has a light layup, efficient hull and by the looks of it, should cut throught the air nicely. Thats a recipe for a fast boat.

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Wow never thought of how the deck played a part in speed.

Just as important as the setup below the water line



http://i1238.photobucket.com/albums/...deck_words.jpg

Yeah, the higher the speed the more the deck plays a part. look at the big MTI cats and others, the rear is shaped just like an airplane wing. Bernoulli's Principle at work.

I'm a little shocked at the top speed of the OL29. Couldn't help but wonder if the 600 was tweaked at all.
even if only to up the redline to 5800+? But if it truly is 100% bone stock that is incredible.

Importance of a total package design?
 

Here's my slightly educated guess:
1. Superlight cored layup
2. Not to wide at the water line (waterline beam), my guess maybe only 7 feet or less. Nice waterline length ratios. Small wetted running surface at speed.
3. Good step and pad design. Boat runs at nice flat angles at speed , good balance and CG design.
4. Good aerodynamics-look at how the flat deck blends to the layed back winshield and how the top edge of the windshield blends very nicely with the back engine lid. Well Shaped back edge and corners. Low profile (small freeboard) lowers the frontal area exposed to air at speeds. Aerodynamics in any performance boat pushing air at 90+ miles per hour is hugely important and many times overlooked as a speed integrator!
5. Lastly, kinda wonder how much that 600sci has been tweaked as you all know Dustin at Whipple has done a lot of 600sci tweaking with his 600sci & 700sci stage 1,2&3 packages and tuning and he is Family at OL so I suspect it's even good PR for Mercury to have that mill putting out a nice 700HP! and topping 100mph in a production albeit expensive 30 foot single engine performance boat?
Just my opinions and guesses, but in any event it shows what can be done nicely with todays hull design and engine packages when all is put together in a nice package.
Kudos to OL and Whipple for making it happen! Gives a few other boat builders a target to shoot for and the buyers a better boat availability in the long run!

Best Regards,
Ray @ Raylar

I have nothing more than 3rd party here say that the PCM was remapped. Obviously I did not see it done just someone told someone that told me. Regardless of what was done, excess of 100 mph in a single 29 is very impressive. Can't imagine the engineering, thought and testing involved to get it there. Nevermind the seeds to try for it. Could have been a ton of money wasted

I am telling you guys the motor was stock when I was in the boat and it ran 97mph with five guys and then it ran 102 in the shoot out with just Mike. He is like a horse jockey though :-) LOL

The ecu was handed to us from Merc with the latest cal and that was the ecu that was in the boat. Mike was not going to void the warranty on his customers boat. Dustin and I tried to talk him into it but he said no way.

You guys will see that with mods it will go much faster now that the warranty is gone anyway.

I know it's hard to believe and if I hadn't been in the boat myself I would not believe it either.

This is a amazing boat and will change the v bottom world.

MP

http://sharkeyimages.zenfolio.com/im...24630408-4.jpg

http://sharkeyimages.zenfolio.com/im...33658189-4.jpg

http://sharkeyimages.zenfolio.com/im...40921868-4.jpg

http://sharkeyimages.zenfolio.com/im...72127039-4.jpg

http://sharkeyimages.zenfolio.com/im...31199108-4.jpg

http://sharkeyimages.zenfolio.com/im...71150678-4.jpg

The scoops are good size but will not generate positive bilge pressure at speed. The engine will take the first 1100 cubic feet per minute. The vent in the back of the hatch is most probably in a negative pressure area and will bleed off any pressure.
Steve

This is the nicest v bottom boat I've seen!! It just looks fast sitting there on the stands. The only negitve is that I'm sure the price tag will match is awesome looks, but I'm still curious. Anyone seen pics of the cabin?

That was my thought too after seeing the boat in person at LOTO. This thing is a sleek, little bullet and aero has to play a big part in its performance.

I hope that is true.

What is the dead rise? looks less than 24º?

OuterLimits SV29 - Hull Layup Analysis
 

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The hull and hull pieces are built from epoxy, E-glass, and carbon fiber...and are sent into an autoclave at 150 degrees for 18 hours.

Then the hull, and hull pieces are chemically bonded using proprietary adhesives. Once glued, the entire structure goes back into the autoclave at 150 degrees for 18 hours again.


From mold to out-the-door in just 3 weeks with the above process


WOW!

This is bleeding edge technology!

No wonder there are patents to this layup schedule.


For the complete article, please get your copy of this awesome magazine!

The following data compiled from:

SPORTBOAT Magazine
Your Power & Performance Source
Edition: Summer 2012
Pages: 30, 32

http://i1238.photobucket.com/albums/...t_cure_001.jpg

http://i1238.photobucket.com/albums/...t_cure_002.jpg

Freekin hysterical I love it

Funny car bodies?
 

I believe I heard OlL is also building hi-tech funny car bodies for some big name drag racing teams and the money and experience there makes for some good "ruboff" into their hull building science.

Best Regards,
Ray @ Raylar

Ditto this. I've seen multiple pics of two of these boats but have yet to see one pic of the cabin on either. I would like to see how it's layed out.

Buck.

Noli - if you really want to gain a better understanding of OL's construction do yourself a favor and grab a copy of professional boatbuilder issue #133. Article on OL use of FEA as well a real nice article on the company itself. I have just about worn out my copy, total boat porn LOL

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thanks, will do.

when you say FEA, do you mean Finite Element Analysis?

that was mentioned in the article but didn't elaborate on it's meaning.




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You can find pics of the CABIN in this Gallery:

OUTERLIMITS @ THE 2012 MIAMI BOAT SHOW

Enjoy !

LINK has been updated....

http://sharkeyimages.zenfolio.com/im...73106590-4.jpg

Nevermind, wrong boat cabin LOL

Good question....anyone?

Here are some shots that I have of the interior, not nearly as nice as Sharkey's LOL :
http://www.performanceboats.com/gall...m/IMG_0987.JPG
http://www.performanceboats.com/gall...m/IMG_0982.JPG
http://www.performanceboats.com/gall...0/IMG_0988.JPG
http://www.performanceboats.com/gall...m/IMG_0961.JPG
http://www.performanceboats.com/gall...m/IMG_0992.JPG

It is layed out to lay out, cause thats all you will be doing in there.

As I have said about 10,000 times, the PCM has not been modified, as key members of Mercury Racing can say, as well as many other well respected marine professionals. I can guarantee you that the factory PCM has never been here, never been touched, never been modified by me in any way.

Boat # 2 goes the same speed. #3 and #4 will have different power.

This boat, with a stage 2, which is 700+ hp and an increased rev range will easily result in 110 to 112mph.

The one's that keep insinuating that the PCM has been modified are the same ones that can't grasp the actual performance of this boat.

This boat is unlike any other boat, its been said many times and it will prove itself more and more as some interesting things are coming. While some are trying to figure out why the bottom works, you need to look at the entire boat. There's not 1 thing thats the "key." Its the entire boat, CG, the pad, the steps, the dead rise, the weight, the aero advantages, the layup...... Did you guys notice there's no wood screws holding the boat deck and hull together? Hint, there isn't any.

With the current economy and current state of the marine industry, its actually a pretty incredible success story. With proper FEA and industry leading layup design, its not just some cheap inexpensive tooling that was splashed and modified like a lot of others. This was a ground up build with new technology that makes a stronger, yet lighter, faster and more consistent boat.

The dead rise varies depending on what area of the bottom. Again, this boat is different than other boats.