high-performance plate aluminium fishing boats - Aussiehome

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1. Let’s look at typical tinnie construction Around 60 years ago manufacturers started experimenting with very thin-gauge aluminium to build small roof-topper dinghies. These fi rst ‘tinnies’ were often riveted together and were a great improvement over alternative construction materials of the day. Today, manufacturers who use the tinnie construction method have also attempted to build larger boats. These boats, however, don’t have the strength and durability of a plate boat. The tinnie method involves using an aluminium alloy with a softer temper that allows the aluminium to be easily pressed into shape. (Often cut from coils of aluminium rather than from fl at plate.) This design often relies upon plywood fl ooring to brace the hull. Typically, a piece of marine ply, covered with carpet, is fi tted as a fl oor and held in position with a few tabs welded to the ribs or a few self-tapping screws. Often, plastic mouldings are then used to fi t out the dashboard, side pockets and cabin areas. This method is great for mass production of trailler boats. The tinnie method is great for smaller boats which are to be used in calmer conditions, but it simply can’t provide the durability of the Bar Crusher style plate aluminium hull. This softer material is typically pressed in a brake press to give the sides of the hull that distinctive ‘clinker’ look, which adds strength. Some manufacturers now choose not to press the hull sides, to give the impression the boat is a plate boat. Flat sides don’t turn a tinnie into a plate boat and, in fact, will signifi cantly reduce the vessel’s overall strength if the framing is inadequate. The next step involves inserting the bottom, side and deck material into slotted extrusions around the gunwale, chine and keel. The whole structure is then stitchwelded together or welded along the extrusions. A number of ribs are then welded between the extrusions (down the sides and under the fl oor), in an attempt to give the structure some strength. P 3
2. Let’s look at the plate boat Plate boats should be built using a proper sub-fl oor structure, as opposed to just a few ribs. Such boats draw great strength from a sub-fl oor frame that supports, braces and stiffens the hull. (Bar Crusher uses Rigideck TM – the toughest sub-fl oor system in the world.) Good plate boats also have full aluminium fl oors for further bracing. (Again, Rigideck TM provides a super-strong and durable tread-plate fl oor.) Plate boats don’t have ribs around the inside of the hull, as they use the strength of the sub-fl oor and the hull structure itself to support the sides of the boat. If you can see ribs or extrusion frames running down the sides under the side decks, it’s a dead giveaway the boat is built using the tinnie construction method, rather than true plate boat construction. Plate boat builders usually use a much stiffer, harder, higher temper material cut from thick plates of high-tensile aluminium, rather than low-tensile, soft, coiled material as used in tinnies. (The lower temper coiled material, although easier to form, press and bend, can fatigue and crack more easily than hightensile material.) Bar Crusher hulls are super-stiff and are built using the true plate boat design and construction method. The unique Rigideck TM system provides a solid sub-fl oor frame that supports the entire hull structure of the boat. There are no ribs (pieces of extrusion) welded down the insides. Just a nice clean interior and super-strong hull with almost zero fl ex. ‘ Bar Crusher has never had a structural hull failure. Not one! , That’s quite a record... ® P 4
Page 1 and 2: HIGH-PERFORMANCE PLATE ALUMINIUM FI
Page 3 and 4: Things you must research when looki
Page 5: A true ‘plate aluminium’ boat..
Page 9 and 10: What does all this mean Regardless
Page 11 and 12: What is broaching This is the pheno
Page 13 and 14: We’ve already discussed the super
Page 15 and 16: Buyer check list Things to think ab
Page 17 and 18: Five-year warranty... Now that’s
Page 19 and 20: The smallest model in Bar Crusher
Page 21 and 22: Bar Crusher’s stalwart 560C is co
Page 23 and 24: Looking for the ultimate all-round
Page 25 and 26: Bar Crusher’s 640C is the agship
Page 27 and 28: When the going gets tough, Bar Crus
Page 29 and 30: Bar Crusher’s super-tough 560WR w
Page 31 and 32: Bar Crusher’s tough, go-anywhere
Page 33 and 34: Bar Crusher’s 640HT sets a new be
Page 35 and 36: Standard Features Model 530C 560C 6
Page 37: Bar Crusher Features Removable iceb
Page 40: Bar Crusher head offi ce and factor

high-performance plate aluminium fishing boats - Aussiehome

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