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Atlanta wooden boat association membership
I got some difficulty here.Hope that someone who expert in Hullspeed or wave pattern could help me explain my problem. As you can see in the pictures attached below, that were the wave pattern produced by my boat at different speed. 1) what is the standard explanation to show the different between each wave pattern (other than explain about wave produce at critical, subcritical, supercritical speed). Location: Norway Is it possible to import an IGES hull file into Maxsurf and from Hullspeed get the wave pattern from the actual hull?
Other input data is Speed range, Method of calculating , Overall efficiency and also need to set units. When making potentially dangerous or financial decisions, always employ and consult appropriate professionals.
Location: Tampa Florida Ragtime lines Maybe These are the lines I developed from section lines posted by Gary. Location: Tampa Florida Gary's section lines for Ragtime and Buccaneer Ragtime is the top Buccaneer is the bottom.
Originally Posted by Ron Cook These are the lines I developed from section lines posted by Gary.
Location: Tampa Florida Changed fore foot Paul I've changed the fore foot.
Maybe take what you have and lay it over this sketch that also shows the chine line.ust to see where you are with the keelson and chine profiles. Location: auckland nz You've almost got it right Ron, but you have lifted the bow at deck level - maybe that is what you want since you've altered the transom area too.
Location: Tampa Florida Over lay sketch Paul I altered my drawing to fit the sketch you posted.
Location: Tampa Florida Rags Paul the lines you snagged Came from the profile sketch you posted.
Location: Tampa Florida InsTanton Y-M-T With all this talk about Ragtime it got me thinking about your InsTanton hard chine designs. Ron Cook View Public Profile View Ron Cook's Gallery Find all posts by Ron Cook « So THAT's a square-rigged sailor! Location: 59 45 51 N 019 02 15 E New software Sounds interesting, let me test it.
Location: Atlanta, Georgia, USA It does appear to be with the BoatDesign forum. Or if you have the zip file handy I'd love to try and attach it to your post above and see if I can reproduce the attachment error.
Location: Atlanta, Georgia, USA Thank you Jeff, I was beginning to get paranoid.
Questo oggetto verrA  spedito tramite il Programma di spedizione internazionale e include il codice della spedizione internazionale.
Spedizione internazionale: gli oggetti possono essere soggetti a tasse doganali a seconda del valore dell'oggetto dichiarato. I venditori stabiliscono il valore dichiarato dell'oggetto e devono attenersi alle leggi sulle dichiarazioni doganali. Gli acquirenti possono essere soggetti a ulteriori addebiti per le operazioni di sdoganamento.
Questo importo include i costi applicabili per spese doganali, tasse, intermediazioni e altre tariffe.
Il venditore spedisce entro 1 giorno dalla ricezione del pagamento - si apre in una nuova finestra o scheda. La stima dei tempi di consegna indica i tempi di invio del venditore e dipende dal servizio di spedizione selezionato e dalla ricezione del pagamento - viene aperta una nuova finestra o scheda. Eventuali spese di spedizione internazionale e di importazione vengono pagate in parte a Pitney Bowes Inc. Nota: usando la funzionalitA  di traduzione automatica, accetti i nostri Termini e condizioni e sei consapevole che l'accuratezza della traduzione non A? garantita. Questo oggetto viene spedito in Taiwan, ma il venditore non ha specificato le opzioni di spedizione. La spedizione di solito viene effettuata entro 1 giorno lavorativo dalla ricezione del pagamento - viene aperta una nuova finestra o scheda.
Migliora le possibilitA  di aggiudicarti l'oggetto impostando un'offerta massima piA? alta. Appena vengono effettuate offerte da altri utenti, eBay aumenta automaticamente la tua offerta in piccoli incrementi, fino al tuo limite massimo. Cliccando sul pulsante, ti impegni a acquistare l'oggetto dal venditore e a effettuare il relativo pagamento se risulti il migliore offerente. Inviando la tua offerta, ti impegni ad acquistare l'oggetto dal venditore se risulti il migliore offerente. Cliccando su Conferma, ti impegni ad acquistare l'oggetto dal venditore se risulti il migliore offerente.
Cliccando su Conferma, ti impegni ad acquistare l'oggetto dal venditore se risulti il migliore offerente e dichiari di aver letto e accettato i termini e le condizioni - viene aperta una nuova finestra o scheda del Programma di spedizione internazionale. This item will be posted through the Global Shipping Program and includes international tracking. Estimated delivery dates - opens in a new window or tab include seller's handling time, origin postcode, destination postcode and time of acceptance and will depend on postage service selected and receipt of cleared payment - opens in a new window or tab. Refunds by law: In Australia, consumers have a legal right to obtain a refund from a business for goods purchased if the goods are faulty, not fit for purpose or don't match description. Will usually post within 1 business day of receiving cleared payment - opens in a new window or tab.
By submitting your bid, you are committing to buy this item from the seller if you are the winning bidder. By clicking Confirm, you commit to buy this item from the seller if you're the winning bidder. By clicking Confirm, you're committing to buy this item from the seller if you're the winning bidder and have read and agreed to the Global Shipping Program terms and conditions - opens in a new window or tab. By clicking 1 Click Bid, you commit to buy this item from the seller if you're the winning bidder.
I intended to have this for the River Ranch, however UPS was delayed and it arrived too late. Is it possible for the bottom crank bearing to move and allow crank to drop causing damage to stator without binding up the crank?
Editor's Note: This article was originally published in 2002, however I felt that it is a very informative source for those of you that are interested in the Tunnel Boat Design Program. With winter fast approaching, boaters? thoughts turn to winterizing and the dull, boat-less months ahead. Fortunately, if you own a tunnel boat, Aeromarine Research has a way to use this downtime very productively. Aeromarine Research?s Tunnel boat Design Software is used by professionals and individual high performance enthusiasts worldwide to improve the performance of their tunnel boats. The Design screens are all easy to navigate, and the helpful diagrams make entering the correct data a breeze, even for a beginner. Of course, looking at rows of numbers isn't always the clearest way to visualize performance. We started with a lightweight 1998 STV Euro, equipped with a factory stock Mercury 2.5 liter EFI powerhead rated at 260 horsepower.


The first step was to accurately measure the hull, as per the requirements of the Tunnel Boat Design Program.
As you progress through the measurements, the data input requirements become more involved, requiring weights, engine and lower unit locations, lower unit measurements, maximum horsepower output, propeller slip, and much more. It is important to be accurate with your measurements ? which may require the help of others during the process. When all of the measurements are completed and entered into the Tunnel Boat Design Software, the real fun begins. With the data already saved in the software, a simple mouse click on the ?Calc Perform? button provided us with the output of the software?s analysis. Taking this yet another step further, the Tunnel Boat Design Program assessed the stability of our STV, arriving at the conclusion that our particular rig would experience relative instability throughout the 55-80 mph range (often referred to as the ?hump? zone). The real fun begins when you alter your setup parameters in the program, and watch the results of your changes.
Although the Tunnel Boat Design Software is highly advanced, it does not have steep hardware requirements. On or off the water, Aeromarine Research?s Tunnel Boat Design software is a performance-predicting program that is more than worth the price. As a professional race driver, he piloted tunnel boats to Canadian and North American championships. There must be some problem with my dimensioning, because, besides the problems with the slurry hulls (patches starting close to zero), to get them as far apart as shown in the screen an offset value of 50000 had to be inserted for the WW hull. La confezione deve essere la stessa che si puA? trovare in negozio, a meno che l'oggetto non sia stato confezionato dal produttore in una confezione anonima, come una busta di plastica o una scatola senza stampa.
Contatta il venditore- si apre in una nuova finestra o scheda e chiedi il servizio di spedizione per il tuo indirizzo. Hai letto e accettato i termini e le condizioni - viene aperta una nuova finestra o scheda del Programma di spedizione internazionale. Le spese di importazione precedentemente indicate sono soggette a modifica se aumenti l'importo dell'offerta massima. Contact the seller- opens in a new window or tab and request a postage method to your location.
You've read and agreed to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase your maximum bid amount. It is during these months that we take the time to reevaluate our rigs, and think about changes for the next season.
Their Tunnel Boat Design Software can turn the winter into the perfect time to optimize or design your tunnel boat configuration, all without leaving your home. The program uses three different methods of optimization to generate predicted performance results: angle of attack optimization, power optimization, and velocity prediction. On this screen, you enter figures for the hull design - tunnel and pad height and width, number of steps and their length, and pod measurements. The Design screens also include a velocity range calculator and an incremental angle calculator, so you?re spared having to do any calculations on your own. This screen is where you find out how your boat (real or imaginary) would perform under the specified conditions.
So Aeromarine Research has included another very useful feature - a total of 34 different graphs. Here you?ll find the estimated acceleration, coefficients of aerodynamic and hydrodynamic lift and drag (and breakdowns for each part of the hull) and predicted stability data. Aeromarine Research developed the proprietary algorithms used to do the detailed performance prediction through years of wind tunnel testing, water channel testing, and racecourse proving.
Although some boat owners will already know their boat?s details intimately, the measurement process also became a learning process for me, as it no doubt will for others. As the Tunnel Boat software shows, it?s amazing how small dimensional differences can really affect the performance of the boat. This is where the computer, predicting results on acceleration, velocity, and stability, analyzes our virtual model of the STV.
Well, in the coming months, our heavily modified 2.5 EFI will trade places with the stock unit. The software will run quite easily on a Windows 9.x or Windows 2000-based Pentium-class system with 32 MB of RAM.
Currently living in Canada, he has done extensive aerodynamic research at University of Michigan, MI and University of Toronto, Canada and marine research at the NRC water channel laboratory in Ottawa, Canada.
He has written power boating articles for many worldwide performance magazines and has covered UIM and APBA powerboat races. The drawing with the black background are the lines I developed from Gary's posted Ragtime section lines shown here.
I've tried a few test zip files and also those mentioned above and can't reproduce it with any of the above browsers. Se sei residente in uno stato membro dell'Unione Europea eccetto il Regno Unito, non puoi recuperare l'IVA per questo oggetto. If you reside in an EU member state besides UK, import VAT on this purchase is not recoverable.
Many of us think of ways to extract every last ounce of performance from our rigs as we wait for the warmer weather. The Tunnel Boat Design Software promises to help you optimize the performance of your tunnel boat ? off the water.
After you input the data on your boat, the program makes all the necessary calculations to predict actual performance. These are the places where you can experiment with actual hull design, set up, and much more to see which changes will result in better performance.
A note to non-North American users: all measurements are Standard, so if your measurements are metric, you?ll have to convert them.
You?ll also assign values to boat weight, motor weight, fuel weight, and even driver weight.
Aeromarine includes setup data for a variety of popular drive units, so you might not even have to measure yours. Like the other screens, the Design Detail Data screen includes a diagram so that it is clear what each measurement refers to. The only thing you need to do is measure accurately, and feed the information to the program. The Performance Analysis screens show the predicted results of all your tweaking and experimentation.
Here you'll find elapsed time, the location of the static and dynamic centers of gravity, motor and cowl drag, the total hydrodynamic and aerodynamic lift and drag, and many other variables.
These graphs are pictorial representations of the information on the Performance Data screen. And as with all the other screens, the context-sensitive help makes this program especially valuable for the amateur boater. And yes, the founder of AeroMarine Research is a tunnel designer, driver and racer himself. Also, stock power is more consistent in performance, and will yield greater accuracy for our purposes.
During this process, the user will become very familiar with the components of a tunnel boat, as well as all facets of its setup.


Most lower unit configurations are covered, and it saves the user the time of those measurements. The entire process of measuring the boat, cockpit, and setup characteristics should take no more than an hour for the experienced tunnel boat enthusiast. Astonishingly, the Tunnel Boat Design Program predicted that our setup would achieve a maximum velocity of 115.1 mph!
We?ll get an accurate assessment of the power output of our modified 2.5, and we?ll put the Tunnel Boat Design Software to use once again. Although it was originally designed for professionals (the sheer attention to detail is astounding), it is accessible and easy to use for even complete novices. His published papers are highly acclaimed, and are specifically related to the aerodynamics and hydrodynamics of high performance catamarans, tunnel boats and vee-hulls. Russell is the author of the "Secrets of Tunnel Boat Design", "History of Tunnel Boat Design" book, and the "Secrets of Propeller Design." books. If you could tell me exactly what you get when you download the zip and get the invalid error it would be really helpful to me (e.g. Thanks to Aeromarine Research, you no longer have to spend hours with complex calculations and confusing formulas. The screen also has a useful picture with the different measurements labeled, so if you?re not sure what the ?Pad Deadrise? is, a glance at the picture will show you exactly what to measure.
If you do though, they helpfully include a clearly labeled diagram (which, like the others, can be enlarged for better detail). You can look at data throughout your full velocity range (say, 10 to 100 mph), or you can highlight a specific troublesome velocity range (say 50-60 mph) in small steps to examine what is causing a specific behavior. Very often it is easiest to just pull up a graph and see at a glance how your changes have affected performance. The help screens are comprehensive and clearly written, and provide quite an education on their own. But no matter how thorough and impressive the program seems, it is only worthwhile if it can help you improve your boat's performance.
This process really helps you understand what features make your tunnel boat perform as it does.
The software?s online help system and detailed diagrams go a long way for those of us that are not very familiar with tunnel boats. Taking this even further, the TBDP also accurately predicted our acceleration model ? a big plus for drag racers. It would be safe to assume that this program will be right at home here, and we?ll be incorporating its resources for future tests involving tunnel boats. Pros can dive right in, and amateurs will find that the program can guide users through each step.
Russell has designed, built and raced tunnel boats, and consulted on design of many recreational, racing, commercial offshore and government hull designs. It can handle an unlimited number of hulls (although two is all I've tried on it) It can handle an unlimited number of forces at any location and with any vector. So, first we?ll look at how the software works, and then we?ll see how well its results compare to real life performance. Optimizing for each factor will give you a huge amount of critical information on everything from actual hull design to high-speed stability. You can also be spared costly ?trial and error? alterations that can damage your boat or result in more downtime. There is also a detailed User Manual and on-line context-sensitive help manual that explains each of these design parameters in detail. You also give a starting velocity and angle, and choose which factor you want to optimize - velocity, angle, or power. Performance Analysis consists of two important parts - the actual performance data and data on stability ? a remarkable asset, since safety is always the first concern of any responsible high-performance boater.
You can view any of the listed values as a graph versus velocity, giving you a variety of easy to read and informative graphs. The measurements start off with basic hull attributes ? sponson width, deadrise angle, center pod properties, and so on.
The software noted that our rig would accelerate at a constant rate up to about 103 mph, and that from 103 to 115 mph the climb would be much slower.
The Tunnel Boat Design Software can tell you the results of your changes ? before you spend any money or make any physical changes to your rig. There is even an option that will validate all the data you input, and alert you if your value falls outside the appropriate range for that variable.
Even if you?re one of the lucky few that lives in a climate that permits year-round boating, this software will prove very valuable ? after all, how else can you test such a huge variety of performance enhancing features without breaking the bank?
Normally, it would take an enormous amount of time and dedication to acquire this information ? even learning all the background theoretical knowledge would take quite some time.
After all, would you rather spend hours experimenting with and testing motor height, for example, or spend just a few minutes entering data so that the software can help you predict the optimum placement? Aeromarine?s Tunnel Boat Design Software is extremely comprehensive - you must also choose the altitude and type of water in which you?ll be running your boat. If you are relatively new to tunnel boats, you may not necessarily realize what certain ranges of numbers mean.
As on all the data input screens, a diagram is supplied that shows the proper measurement points to ensure accuracy.
This prediction was within 5 mph of our performance with the STV, as we noted that our STV began to ?crawl? to 115 mph at about 108 mph. The Design screens all clearly illustrate the required measurements, and the included Help file is a gold mine of performance boat knowledge. Essentially, this software allows the tunnel boat enthusiast to alter a ?virtual model? of their current hull, or create an entirely new design and see the results of your changes in real time as you alter each of the many hull variables.
Aeromarine has taken their years of experience and knowledge and put them all together in this program. You even have the option of using a constant, straight line, or custom acceleration model for the final calculations. So Aeromarine also includes special notes that both alert you to dangerous results and give advice on how to correct the problem. I found it most helpful to print the illustration, and have it handy while making my measurements. Each design measurement and aspect of performance is clearly and accurately defined, along with the related background theory.
The power of the PC can now be leveraged to offer insights into your hull configuration never before possible with such ease and accuracy.
The Tunnel Boat Design Program is used by pros and individual enthusiasts alike - the program is very straightforward and includes a great deal of support for all types of users. The beauty of it is that the more you use the Help file, the more you?ll find yourself with an increased understanding of what makes a tunnel boat tick.
It uses the mesh as generated via DelftShip so its quite easy to export in Low and Highest resolution modes for doing fast trade studies with the Low and then doing a final Highest resolution mode.



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