Almost sounds like a Ringer on a Washing Machine from the early days....:D :D :D

Cat forgive the capitalization I was trying to make it a bit more readable is all. Or easer on the eyes. Getting a little long, did not want to give a headache to the reader.:)

Right Sharkey lay it over face up with resin dam’s thats a good analogy .:)

Steve1,
There is no longer a hydrodynamics department at the university of Vermont. My understanding is that the best naval architecture/marine engineering is at University College of London. Actually, the application is sitting right next to me at my desk. I am trying to decide if i wanna take my hobby and make it my job. I dont want to end up hating something i love doing as a hobby. I think I am going to look into an internship for this summer. Thanks for your response.
Chris

There you go STEVE! Need an intern???;) This guy can learn alot from you......:)

LOL Sharkey we want to keep this guy in the boat business ,Not drive him away..

Best Regards But should give an invite to the Skaterfest !
:)

I will be at Skaterfest. My father and I attended last fall as well.
Regards,
Chris

Oh yeah....:o Don't tell him about all the crazy hours you end up putting in! :eek: :eek: :eek: ;) :D

There sure seems to be alot of talent here. Where are the rest of the photos of that Vee?

Update
 

It doesn't look good for getting this new hull to SKATERFEST. The Trailer hasn't been built yet and they are laminating the deck on this week. Some awesome stuff going into this deck. It is made up of PrePreg. Nomex Aluminum Honeycomb. For those that may not know what that is. It is the same stuff they build Airplanes from and the cost runs about $400.00 for a 4x8x1/4 inch sheet. The entire deck may end up only weighing 160 lbs.:eek: I will try to get some more pics today.

I emailed Sharkey the other night about this BAD A$$ machine. I got to see her with my own eyes!!!! All I got to say is WOW!!!!!!
The innovative things that are going into this boat and so forth are amazing!!!! Really Bad A$$ as I said. I will not give the location out as I am sure the owner who I was suprised that I actually knew who he is(Great Guy) would not want visitors all the time as they are trying to complete this boat. Man if you threw a canopy on this thing and you run it in SV LITE SINGLE OR SBI A-Class or whatever. The technology in this thing would dominate the field I am sure. Can not wait to see the performance numbers on this thing when it hits the water. Anyone contacted Powerboat or Hotboat Magazine about this project?
Once again all I can say is BAD A$$!!!!!!!!!!!!!!!!!!
Dennis P Tracey

Dennis, We are quite fortunate the owner is taking photos of each step of the process of building something like this. Soon as I get more I will have them posted up on my website.....

Here is one of them....

looks different...BUT, what happens when you "plow" into or through a wave and those intake vents suck in tons of water?

The air scoops ventilate the 1st step in the bottom of the hull. The water would run out the bottom. As for the upper vents they are working on a plan for that. The tube will not run completely to the engine compartment. Let's just say, they are aware of the chance of a stuff. That was the reason also for the wide chine and additional strakes in the bow area.

Steve1 What are your thoughts on the Nomex Aluminum Honeycom Panels being used for the deck???

Sharkey just a quick Question before I answer: Is this going to be done with a room temperature cure system, or using an elevated temperture cure epoxy?

Best Regards
:)

Room temp.

That thing looks WAYYY COOOLLLLL!:cool:

sharkeymarine:

What is "nomex aluminum"? Usually its nomex OR aluminum honeycomb.

vtec

Well, maybe I had too much resin fumes lately.:eek: I know the name they told me was Nomex and it is definately Honeycomb shaped. To me it looked like aluminum inside. I don't know. I never worked with the stuff. All I know is it's light as all hell and very expensive too! :D :D :D

Hey Sharkey very sorry about the delay in getting back (truth is I fell asleep at the computer and with the wife overseas no one to wake me up) on the honeycomb. As we know these Materials allow panels to be built with great *stiffness attributes, to the weight of the finished part. The airplane people love it! But a lot things in life come with trade offs. And with honeycombs it is catastrophic failure, coupled with words like Instantaneous and!! Planes do not fly very well after crashing into the water.
Also why I asked about the cure? Ron Jones uses honeycomb but he bakes!

Now back to Mr. Panel we know that a sandwich panel behaves a lot like an I or H beam the core being the shear web of the beam. Lets talk more about this.and what it does!! remember these Materials have no memory!!You deform it Ouch!!Remember Boats and heavy mechanical slaming!! Not buffeting!

Now when we load the thing the Point of maximum shear would be across the centerline. And with honeycombs you really must have a smaller shear number here than on the honeycomb physical spec chart as there is no room for forgiveness here.

I have to qualify that for this discussion we are looking at a unit supported at the ends with the load applied to the center of the span. Similar to my old sledge hammer and concrete block holders, when testing in the old Airex days.

Ok we see this apparatus in our minds (a pair of sawhorses with a board across them) and we apply load to the center an arrow down vertical. equals load Now arrows appear in the center of the test piece horizontally at the center these really bear watching Mr. and Mrs. Shear want to be in motion ! with one-half this direction one-half the opposite direction.(just like people)tearing the material in half. Put simply if the core was not present and only the skins together they would assume a common radius around the point of load. Or droop off our imaginary sawhorses touching the ground with no load present.
Now for your question on the deck core of honeycomb Only the deck right?? Just something keeping sunlight out of the boat, and people dry on a rainy day?? (Joke) Wrong!!Consider it carrying more than just its own weight it is a major structural component of the Box Beam we call a Hull & Deck, Doing all sorts of cool things like transferring load from one side to another, Keeping the bulkheads from being pushed out of the boat by the stringers, Providing transom support in a very critical area like at the top..Plus holding the hull in its oringial and pretty shape ,while a place for Graphics and girlfriend while photo shooting..
Here is the thing with honeycombs be Aluminum or Nomex .first rule No Panel edge Loading none nada. It behaves like a dam accordion.
Second you better find the magnitude and direction of the external and internal loads. Third Choose a shape and size for each section of the structure as well as the material that will produce a smaller maximum stress than is required to deform the material IE unexpected tensile or compressive loading. the grey area *do not confuse stiffness with strength! the difference between a ¼’ panel and a ½’ panel is like 37 times in stiffness.

:)

Steve1's quote: "*do not confuse stiffness with strength! the difference between a ¼’ panel and a ½’ panel is like 37 times in stiffness. " Sounds so similiar to
CARBON FIBER . It may be stiff as hell, but doesn't really have the strength. That is why so many see a Kevlar Carbon Fiber Weave cloth. One for the strength and one for the stiffness. ;)

Sharkey!! Right on.





Best Regards:)

GREAT thread!

:D

I will 2nd that. :) :)

Update
 

The deck is now on...photos are on their way.....

More Pics Added
 

I just added more photos of the NEW HULL DESIGN . They are located under "BOAT BUILDING" at SHARKEYMARINE.COM

Flat deck and HEMI! engine. COOL!

It's really great to see the whole process of how this is being done. Thanks for the pics. Great website!

Steve1 Sorry I missed ya at SKATERFEST. Maybe next time. What do you think of this project so far?:confused:

Very Cool Sharkey !! :)

My Best Regards to you and the Builders

What would be your guess for top speed and handling? 600hp Hemi, 2000lbs boat before rigging...

He has it home now. Graphics guy was there today.

Update:
 

The deck has been painted, unfortunately the project came to a slow down. The owner ran into problems with having the exhaust built to his specs and is now in the process of making his own. The rest of the paint has not been done yet. I hope they finish everything over the winter. I can't wait to see this thing run......:cool:

This is an swesome thread! I've allready learned alot just from reading this alone! :D

Can someone explain just a basic plan for a lamination sceduall? I know some of these things are company trade secrets but just for us backyard fiberglass junkies can you just tell us a a simple plan of attack for building something and not having it delaminate or come appart on us? Ive been readin up on mold making and such but am still a little leary about actually making something from a mold. Or for that matter.....how about actually making the mold from the plug itself! Thanks :cool: :D

Re: New Hull Design
 

Active Thunder 38', 22, Challanger 24', 29', 33', Larson 24', 26', 29', 30' & 37', Crompton's 29',31', 41',57', none of those step hulls spin out in the turns.

Also, the wide chines came from the delta conic design and the airreated step came from The design for Cal Cannal.

Lay ups
 

Wally, On my website, click on the "BOAT BUILDING" page. Then click on "BUILDING BULLET 130s" . There you will find a step by step process of how I used to build my boats. There are several ways to lay up a boat. This is just one of many... One thing I never used was a chopper gun. Too messy and hard to control the laminant going in. STEVE 1's method is top of the line! I don't know how many details he will give us though...:D :D :D

I have pics of a boat that put the exhaust into the step to air it.
i will post them if i find them.

sharkey;
did you/they finished the first boat yet?
results?