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Aluminum vs. Fiberglass Hull | Boat Design Net

Discussion in ' Materials ' started by bucketlistMar 5, Log in or Sign up. Boat Design Net. Aluminum vs. Fiberglass Hull Discussion in ' Materials ' started by bucketlistMar 5, I am a little gun shy of the newer fiberglass hulls. Pros and Cons?

You don't compare strength by thickness, unless this dimension is a limiting factor in the design. I don't think fiberglass will ever work successfully as a hull, there's no future in boats built with composites. It just doesn't work. You can't just generalise - it all depends on so many things. Based on modulus, you could say that steel is 3 times stronger than aluminium - but steel is also almost 3 times heavier ie denser.

If the value of 17 for GRP is true, then you could say that aluminium is 4 times stronger than fibreglass - a far cry from the claim of 10 times that you mention do you have a link for this claim? You mention that you are a 'little gun shy' of the newer fibreglass hulls - what are the aspects of these hulls that you are uncomfortable with? Pleasure boats are about feeling good, you choose something that makes you happy.

If the "newer fiberglass hulls" whatever they are don't do it for you, it's OK, plenty of options out. For example "older fiberglass hulls", carbon fibre hulls, kevlar hulls, basalt hulls, ferrocement hulls, HDPE hulls, wooden hulls of all possible descriptionssteel hulls, aluminium hulls, titanium hulls, and probably something I forgot or never knew it existed.

Your money, your choice, there is no "better", only "makes me sleep good at night". As for "newer fiberglass hulls" I'm going to go out on a limb and aluminum hull boats vs. fiberglass instagram you they are like "newer automobiles", better and worse at the same time.

We now know much more and can optimize the boats much better, aluminum hull boats vs. fiberglass instagram some of the directions we go while doing this is not to everyone's liking. Why that happens is simple, market pressure, the customer wants it like. For example both newer boats and cars can be hard to repair welding is not allowed anymore on many newer cars simply beacuse our economy has moved to a place where buying new with insurance money is preferred.

RumarsMar 5, Bullshipper and bajansailor like. Comparing fiberglass hulls to aluminum hulls is an apples and oranges exercise. Which is better? Since most recreational boats are made of fiberglass your argument of the superiority of aluminum is a bit suspect.

But when people ask me which is better, I say, which is better for you? Buy what you want. If you want aluminum there are literally hundreds of models available in aluminum. Or buy that which is most suitable for whatever use you will have for the boat.

What boat you should buy is mostly determined by what you are going to do with it. If a fiberglass boat meets your needs then buy a fiberglass boat.

Fiberglass lasts almost forever. The industry is still trying to figure out how long it will last and how to recycle it. Yes, today fiberglass boats are built a lot lighter than they aluminum hull boats vs. fiberglass instagram in the 60's and 70's, but designers have developed new techniques to provide stronger and better hulls with less weight and less fiberglass.

My 18 foot Sea Ray weighs over lb more that the same size boat today. But I'd be willing to bet the new equivalent boat is just as strong and will last just as Aluminum Boats V Hull Vs. Flat Bottom King long as. As for aluminum. They are probably much more rugged.

Here in the Pacific Northwest people aluminum hull boats vs. fiberglass instagram a lot of river running and fishing in rocky areas. Aluminum is far better for that than fiberglass. Go to any hot fishing spot off the Coast or in the rivers and sounds and most of the boats you see are aluminum.

Again it's a matter of use. IkeMar 6, On thing rarely spoken about plate alloy boats, water noise that can be annoying, like marbles rolling around in a barrel. Mr EfficiencyMar 6, Long storybut my boat was damaged due to blocking. Thanks for the opinions.

The damage to your boat had little to do with the materials, it was how it was built or handled. It didn't fail because it was fiberglass. Thin aluminum would fail if blocked incorrectly.

Design and build aluminum hull boats vs. fiberglass instagram hull correctly, and most materials can survive quite. Even if one used Uni, it is essential to lay the fabric so that the fibers run straight and are taut. Loosely laid cloth that has been distorted and having wavy fibers will be much weaker and have a considerably greater deflection for a given load. Aluminum can be a great material, but only if the weld prep is clean and uncontaminated and the welding carried out precisely.

Its very easy to contaminate the surfaces and for wind to disrupt the shielding gas. It has quite a lot of shrinkage on solidification so that translates into a lot of stop-starts and each one is potential for oxidation, contamination and pinholes.

On a steel hull, blasting and painting the structure can be as expensive or more than the cost of the hull plating. The material itself is a bit more resistant to process problems, but that is highly dependent on the alloy used. The higher the yield point of the alloy and especially the higher the carbon content, the more critical the processing will be and the more susceptible one will be to hydrogen embrittlement.

All material choices are compromises and which factors are important to you will depend on the intended Aluminum Boats V Hull Vs. Flat Bottom Id purpose and the location where you use it. KeithOMar 6, Oh, now I remember, how has that played out? Clearly GRP has been a huge, huge success in boat building, I can't imagine what recreational boating would look like without it, except it be much the poorer.

So get that prejudice in perspective. Sure, it has limitations, and for certain special applications, it is best avoided, but as a general rule, no, it has far more advantages than disadvantages. Last edited: Mar 7, BarryMar 6, Aluminum if designed right is stronger and stiffer aluminum hull boats vs. fiberglass instagram a fiberglass.

To build with aluminum, you need a shear, drill, a riveter, perhaps an aluminum welder. With fiberglass you need a scissor and aluminum hull boats vs. fiberglass instagram paint brush. You must log in or sign up to reply. Show Ignored Content. Similar Threads. Will fiberglass stick to aluminum foil? ViittisMar 22,in forum: Materials. Replies: 7 Views: 20, Herman Mar 22, Replies: 14 Views: 42, PAR Sep 25, Replies: 26 Views: CBTerry Feb 12, Stick welding aluminum gonzoJan 6,in forum: Materials.

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fiberglass instagram, Deering Aug 10,

Aluminum production labor is easier to inspect. March 4 4 posts December 1 1 post May 3 3 posts April 1 1 post March 2 2 posts February 4 4 posts January 3 3 posts December 4 4 posts November 3 3 posts October 1 1 post September 2 2 posts August 3 3 posts July 3 3 posts June 3 3 posts May 2 2 posts April 4 4 posts March 4 4 posts February 3 3 posts January 4 4 posts December 5 5 posts November 4 4 posts October 4 4 posts September 5 5 posts August 4 4 posts July 5 5 posts June 3 3 posts. In this section, you can learn all of the essential benefits of an aluminum boat. Until recently, aluminum boats used to have relatively shabby looks, unlike their flashier fiberglass cousins. You can't just generalise - it all depends on so many things. Added bonus: lighter rigs also make for easier, more economical towing. Spotlight endorsements and years of winning tournaments cemented a strong reputation among die-hard bass anglers.

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