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Plans listed for aluminum construction include all the details necessary to build the boat in sheet aluminum. See our Online Store buidling additional publications on aluminum construction. Please see our Online Store for all the Glen-L designs available for aluminum construction. The following can Aluminum Boat Building Supplies University be used as a general guideline for selecting materials.
However, the listing is not necessarily all encompassing aluminum boat building supplies Supplies University Boat Building Aluminum university given in order of preference. To figure hull cost, use weight of hull times cost per pound. For further information on welding, see WeldingTipsandTricks. The number of people with aluminum welding skills and access to fabricating equipment has buildlng considerably over the years.
Yet many are unaware of fundamental considerations confronting the suppkies amateur building a single boat for his own account. The would-be do-it-yourself aluminum boatbuilder already familiar with aluminum often has his roots in aluminum boat building supplies Aluminum Boat Building Supplies University Aluminum Boat Building Supplies University university non-marine production fabrication setting. Thus there may be a tendency to want to apply mass-production techniques to the construction of Aluminum Boat Building Supplies University just a single boat.
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Because production builders are always thinking up ways to cut labor and material costs, Aluminum Boat Building Supplies University and time required to build boats, they evolve specialized methods and materials that help toward these ends even if there is not necessarily any improvement in the boat. For example, they may use special proprietary extrusions to expedite some assembly process such as joining side and bottom plating at the chine see Fig.
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In either case, end results are much the same aluminim with comparable boat quality. Using a frame substructure for setting up your hull has several advantages for the do-it-yourselfer typically working. First the frame substructure makes it easy to assure suppljes accuracy that is so important to ultimate performance in a powerboat. Factory production boatbuilders often use specialized forming equipment not always available to amateurs, or use forming services that might be provided by metal suppliers when quantity requirements are high.Aluminum Supplies University Building Boat University Supplies Aluminum Building Boat University Boat Aluminum Supplies Building
Conversely, a design for sup;lies Aluminum Boat Building Tools Ltd do-it-yourself builder would more likely specify internal longitudinal stiffeners i. Either method gets the Aluminum Boat Building Supplies University Aluminum Boat Building Supplies University job done but the latter is easier and cheaper for most building their own boats.
First, a disclaimer. But in reality Aluminum Boat Building Supplies University few do-it-yourselfers want to pay the price for the service. But steel is considerably heavier than aluminum, buildibg boats designed Boat Aluminum University Supplies Building Aluminum Boat Building Supplies University for steel are usually designed for greater displacement. The consequences for a semi- or full-planing powerboat might be so much Aluminum Supplies University Boat Building the better since the lighter aluminum boat will need less power and fuel. But in converting slower displacement-type powerboats from steel Aluminum Boat Building Supplies University Aluminum Boat Building Supplies University to aluminum, you might need to add ballast into such a boat done in aluminum to bring it back down Aluminum Boat Building Supplies University Supplies University Aluminum Building Boat to its original lines.
This may place the center of gravity too far below that of its steel brethren and result a snappy, jerky motion. So instead, you bozt want to place some of the added weight buklding up. Aluminum is Aluminum Boat Building Supplies University not as strong as steel so some compensations must be made if using aluminum boat building supplies university in place Aluminum Boat Building Supplies University of steel. Without getting too technical, with aluminum used for shell plating e. Put another way, to get the same Aluminum Boat Building Supplies University strength as steel in an aluminum hull, it needs aluminum boat building supplies university be approximately half the weight of steel.Aluminum Boat Building Supplies University
More important suppkies how the univfrsity perform under repeated fatigue loading suppliees cycles alternating between tension and compression. Tests show Boat Building University Supplies Aluminum that for a similar number of cycles, steel stays aluminum boat building supplies university its yield strength threshold. In other words, Aluminum Boat Building Supplies University it is more likely to fail due to fatigue over time, an important consideration for boats subject to such conditions Aluminum Boat Building Supplies University i.
But by how much? Converting from steel to aluminum is fairly apuminum mainly because the members used are much the same in configuration and the methods of design and construction are similar. And while there are standards-making organizations e. Consider Boat Aluminum Supplies Building University plating thickness. On the steel boat, this is more often based on the practical minimum necessary to ward off corrosion Aluminum Boat Building Supplies University over time, provide aluimnum welds, and a thickness adequate to minimize unsightly deformation.
Thus 10GA. And in aluminum boat building supplies university cases this increase applies mostly to thickness alone as is listed in Fig. An operating premise is that steel boats in the size range discussed supplids almost always stronger universityy is necessary; this due to the nature of the Aluminum Boat Building Supplies University material, for reasons previously noted, and the fact that the shape of most boats adds strength aluminum boat building supplies university and of itself, and often where it does the most good such as unifersity the bow.
So using the example, 10GA. In other words, multiply the thickness of the steel member by a factor of from 1. Tip: Start with 1. The point is, many alternatives can be used to build an aluminum boat with largely the same results in terms of strength, durability. In the above and referring to Fig. First, the extra strength that a shaped member would provide in the steel boat is universiy redundant in the size boats universlty it would just add weight, cost, and complexity.
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First, such members are a,uminum. Or put another way, you could have the same strength in a lower-profiled shape than with flat bar. And the added strength in the aluminum boat is a plus.
Another benefit might be more usable interior volume. They tend not to be so floppy, and bend more uniformly than flat bar. The downside is that extrusions cost more than flat bar Aluminum Boat Building Supplies University Aluminum Boat Building Supplies University Aluminum Boat Building Supplies University Aluminum Boat Building Supplies University or the sheet stock one can use to make flat bars, and may not be readily available at least in Aluminum Supplies University Building Boat Aluminum Boat Building Supplies University the size you want.
If working from stock plans for an aluminum boat, the designer probably specified certain sizes, types, Aluminum Boat Building Supplies University and alloys of members for framing. But deviations may be possible. Most designs have some latitude in alternates that can be Building Boat University Supplies Aluminum substituted.
Channels can be made from split square or rectangular suppliess, or even split pipe if somewhat larger than the University Aluminum Boat Supplies Building University Aluminum Building Boat Supplies specified channel. You could even fabricate your own sectional shapes from built-up flat bar. Then too, if members are not available in one size, perhaps one the next size up will suffice.
However, you should always consider the consequences of added weight that aluminum boat building supplies university a change might make. Conversely, it is probably better to avoid downsizing to a smaller member as the opposite alternative. To the novice, aluuminum is a bewildering array of aluminum alloys available. But for Aluminum Boat Building Supplies University Aluminum Boat Building Supplies University Aluminum Boat Building Supplies University the welded aluminum boat, the choices narrow down to the so-called marine alloys in the and series, the latter typically Aluminum Boat Building Supplies University being extrusions.
Yet even within these series there are still many alternatives. But the most common, readily available, and suitable for welded boat hulls include: H32 H34 H H32 H H However, the designer may have already taken this into consideration Aluminum Boat Building Supplies University if is specified.
Corrosion buliding for the alloys supploes above is excellent in all cases. The material has good corrosion Aluminum Boat Building Supplies University Aluminum Boat Building Supplies University Aluminum Boat University Building Supplies resistance also and is commonly used for extruded shapes.
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