MCskiFreak

we dont really have anything like that set up in our ship design lab where the presentation is given. I could video it and post it up, or take notes and provide a detailed write up of the presentation.

They work quiet well to wear under your board shorts, key word being under.

Some of you in the local New Orleans area may be interested in this. On thursday Ron Tanis the former owner of American Skier will be speaking to the Naval Architecture dept. about production boat building. If anyone is in the New Orleans area and would like to stop by you are more than welcome to do so, just drop me a line at mwelton at uno dot edu.

I'm not really ready to comment on what the actual design entails on the web because it is different and I dont want it to be picked up and used by some company. I will say that reducing resistance was a high consideration of mine in the design.

Wow lots to answer here. There are plenty of marine engines available out there, GM does dominate the market with pleasure boats in the US but there are plenty of marine diesel powertrains out there that can be used. The problem with using a carbon fiber stringer system is that it has much different physical properties from from fiberglass and the hull would basically become the weaker of the two structures, another problem with Carbon Fiber is because of its high stiffness it transmits vibrations very well and that means all of the vibrations from the drive train are being transferred to the hull and floor. Like I said before I am all about simplicity of the instruments as well as redundancy so simple gauges are fine. I've worked quite hard on a new hull form that is unlike anything else on the market and has much less drag than the 200 hull which in my opinion could have been done in a way that didn't have a large spike in the fuel consumption which in coming years is going to gain importance.

I would be interested in the handle. Any pics?

If this is too early in the test don't worry...but how does the effort feel as far as reduced drag, and any odd tendencies with the stepped bottom?

Two speed tranny = super expensive engineering = super expensive boat. The only way to really get a marine engine is if the mfg. has a marine division that will sell ones which Chrysler does not, nor does Ford. Im all about the torque monster diesels and electric power trains.

The MB hull is a nearly exact copy of the 91-94 MC prostar hull so it has an excellent wake.

I know the bevels were significantly changed for the new ski

Tdi and EcoBoost would be really awesome but they are both super expensive options. Turbo engines also present a problem in such a small enclosed space with being able to efficiently cool the turbo's.

@GAJ0004 The boat there is 19'4" without the platform with a 91" beam. I have a similar goal of stripping as much weight as possible from the boat, and using cored laminates wherever I can. The dash I have been going back and fourth on what to do. I do like the 200 style dash but think it could have been done better, Im also in favor of KISS for the dash components.

@Wish , The transom is a barrel back design so as it moves to the real the boat rolls in on itself. The platform is represented there in both views. just a little hard to tell in the right hand view. The idea for the framless windshield came from this boat http://vandamboats.com/boats/don-don It is purely for cool looks right now since it would cost a fortune to do an actual windshield like that.

Sorry, uploaded the wrong drawing!! Here is one with the lines that dont need to be there erased. I changed up the transom shape so the right hand and left hand view dont really match because of the change in shape that takes place with the more radical barrel that I decided to try.

Well here is a little taste of what ive been working on.

While the weight does have some obvious effect on the tracking characteristics, the hull itself has the largest effect; which was one of the spoertsters problems along with only have 2 tracking fins.

@Wish where are you located at. The Dye and streamliners is a great idea, if you are near a university that has access to a tow tank or a tank that will generate a current.

@DW that sort of thing is commonly done for boats that dont have complicated hull geometry. For example a 38 foot boat may be made with the same mold as the 42' model. This only works because they are a modified V hull that dont have spray pockets steps etc.

Both the running surface and the weight are an issue, I see no reason to continue on with 3,000lb tournament boats. The problem is that the general public sees overly thick hull and thinks ahh well built, I see it as wasteful. I would love to be able to use cored lamenates to reduce the weight of the boat by a considerable margin, while retaining the quite solid riding feel of the boats currently on the market.

How advanced of a class is this for? If its a high school physics class than the calcs for hydrodynamic drag and other calcs are gonig to be beyond the scope of the class.

The Barrel Back will have a step over similar to the Svfara. The transom really is different only in shape from what is currently on the market minus a trunk, so no issues with sitting and putting on skis. @eleeski and @Bulldog the regs have changed alot since '79 and it is a pain to design a boat with usable space that will pass a level floation test. This test the boat is fully swamped and the boat must remain floating level at the gunnels. No offense but a.) people build boats to sell, and b.) the 176 only lasted a couple of years. Why do you think that was if all of the people on this board think there is such a large market. The boat that I am working on is approx the same size as a 196 or mid-90's prostar which gives enough room to be comfotable and useful while not being oversized like the current 200.

Thought this looked like a pretty great deal if anyone is looking for a 196. http://grandrapids.craigslist.org/search/?areaID=129&subAreaID=&query=Correct+Craft&catAbb=sss

http://www.digitalscalesaz.com/Jennings-J-Ultra-Sport-Digital-Scale-30kg This may work its accurate to 3.2 oz and is only $25.

Youre going to need something like a small inline load cell, or inline scale.

Your going to need something alot more sensitive than a fish scale (unless its digital and is acurate to 1/100th) to be able to record the change in load. even with radical with angles the drag will be pretty small.