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Monday, February 25, 2013

Kevlar Toughened Bike Tires

Kevlar Toughened Tyre
Towards the end of last year I had had an absolute enough of punctures, I was getting them almost each time I got on my bike to ride to work and sometimes I would have one on the way there and then another on the way home. Once I even had two on the way home and was so fed up that I walked into a bike shop and bought a new inner tube and asked the boys to fit it for me. As my journey to work is 14 miles you may understand why this was becoming tiresome.
So, the guys at work started telling me about the toughened tires that you can by, specifically they were signing the praises of the Continental GatorSkin Tires which are the ones that I know own. But there are many types of brands that manufacture the Kevlar lined tires that are compatible with the Continental brand.
Though I was still a little unsure and skeptical about these tires especially the investment I would have to make, I did it because I could not bare the thought of another puncture too or from work ever again. At the same time as ordering the tires I also opted for new inner tubes so that the whole package would be new and there would therefore be no weak point. The tires arrived and though they were tough to fit, I used a little talc to make sure that the two would not stick, now I have absolute confidence in my lovely bike and once more I feel that I truly love riding my bike.
Its been one month now and I've not had to pump up my tires because they are sound, it's a joy to ride to work if not very tiring but I finally feel confident that I do not need to leave early and that I've no longer waiting for that little hiss to work its way out of the tire.
For more information about Kevlar Bike Tires and the Puncture Resistant Tires check out my other articles.

Sunday, February 24, 2013

Kevlar Gloves


Gloves are those protective garments that we wear on our hands, either to protect ourselves from cold, harsh weather conditions or from dangerous tools with which we work, or even from harsh detergents that we use as we do our washing. They have a long history that extends to the days of Queen Elizabeth. Made from different materials and in different sizes, they can conveniently be used to meet the needs of different individuals for different purposes.
You will find these garments, also known as mitts, being used in garden work, kitchen work, driving, riding of motorcycles as well as in sports activities like rugby, baseball, skiing among others. From this it is easy to tell that there are many types of mitts. Among them are the kevlar gloves are just among the many types.
Kevlar gloves are made from a very special fiber, and their main use is in the factory or industrial setting, especially the one that specializes in construction. They are ideal because they protect the hands from cuts and abrasions. They are made from such a thick material that is not easily penetrated, and which on the other hand offers support to the wrists and fingers.
Kevlar mitts were developed in Du Pont in 1965 by Stephanie Kwolekk and Herbert Blades and by the 70s it was commercially in use. The fiber that makes them is quite exceptional, highly resistant to high temperatures, as high as 350 degrees Celsius, meaning that they do not melt easily, neither can you burn your hands easily. Try them!

About the Author :
Peter Gitundu Creates Interesting And Thought Provoking Content on Gloves. For More Information, Read More Of His Articles Here GLOVES If You Enjoyed This Article,

Monday, February 18, 2013

Things You May Want to Know About Mad River Kevlar Canoes


If Batman had a canoe (and he probably does) it would most likely be a mad river Kevlar canoe. Why, you ask? Well, Kevlar is a revolutionary material that is the culmination of advanced material technology.
Mad river Kevlar canoes are sought after because of their strength. The secret to this strength and durability lies behind the adaptability of Kevlar as a material. There is an eastern parable that concerns a bamboo plant and a mango tree. It is said that during a huge storm, the bamboo plant kept swaying and bending with the wind while the tree resisted the wind using its strength. After the storm had passed, the bamboo plant remained whole and standing while the tree was torn down by the storm.
Mad river Kevlar canoes pretty much work on the same principle. With them, you can get the durability you want and you don't have to worry about losing your investment because of an unfortunate turn of events. These watercrafts have the privilege to claim being as strong as steel. And this is true. Pound for pound, Kevlar is as durable as steel. Usually, in order to be as strong as a mad river Kevlar canoe, you'll need to find much heavier materials for a canoe. This means that, in order to have durability of the canoe, you will have to sacrifice maneuverability.
We all know how important it is to be able to maneuver your canoe quickly in rapids. You do not have to be a canoe enthusiast in order to understand the danger of not being able to react quickly to what is happening around you. These units do not have this problem. Kevlar is a material as strong and yet lighter than steel. This means that you have the best of both worlds in terms of strength and maneuverability. This is important, since you need to have the best equipment in order to assure your safety while you're having fun outdoors.
We cannot predict the things that may happen on a trip. The best we can do is be prepared for every situation that we may encounter. Having a mad river Kevlar canoe can definitely count as being prepared. With them, you can be sure to handle any situation in a canoe trip. There is one disadvantage with them also: the price. These type of canoes cost a whole lot more than aluminum or wooden or even fiberglass canoes. What's the reason for this, you ask?
Well, for starters, Kevlar is not a cheap material to manufacture. It is 20 times stronger than steel and a whole lot more expensive. The technology behind achieving the lightness and durability of mad river Kevlar canoes is a bit complicated to explain. Suffice to say that Kevlar is very strong on a molecular level. Mad river Kevlar canoes are also expensive because of the fact that Kevlar is not an easy material to work with. It requires a lot of effort to create them. Effort, as you may well know, means money.
Of course, the price is well worth the prize. You can be sure that what you get is the best product for your money. With all of the advantages of Kevlar, what else do you want?
Oh yeah, and you did know that Kevlar is bulletproof, right?

About the Author :
Marina Rodriguez is the webmaster of a website about alpinestars gloves [http://www.alpinestarsgloves.org/] and alpinestars gp pro gloves [http://www.alpinestarsgloves.org/alpinestars-gp-pro-gloves.php]

Monday, February 11, 2013

Fibreglass Moulds in Modern Industry


It's a telling fact that modern industry still hasn't found a substance to top fibreglass. Fibreglass moulds have been around for almost a century and they're still top of the list when it comes to manufacturing strong, lightweight and durable solutions to almost every basic engineering need.
What fibreglass does, that no other material can do so well, is to combine cost effectiveness, lightness and versatility with unbeatable strength. The glass fibres in the plastic (fibreglass is also known as GRP or Glass Reinforced Plastic) give the material a tensile strength far greater than any other substance of similar weight: while the plastic itself allows moulding into an almost limitless variety of shapes and sizes. As a result, fibreglass moulds can be used to cast objects with an equally unbounded quantity of intended uses. Car bodies, roller coaster units, sound baffles, septic tanks, chemical processing tanks, warehouse roofs: the possibilities are only limited by the imaginations of the people who build these things in the first place.
Though the moulding technology has developed over the last 50 years, the material hasn't. Testament enough to its quality and variety of application, and reason enough for the industry to continue developing more and more ingenious ways of moulding the stuff in the first place. Modern fibreglass moulds can construct hugely complicated shapes by forming the objects as discrete parts, which are then "sewn" together using modern machining processes. In this way, even the body of a high performance sports car can be made completely from fibreglass, whose lightness and strength makes a huge contribution to the car's performance. Its weight ensures maximum speed while its strength means that speed can be attained without fear that heavy torque forces will damage the vehicle's structure.
There's a use for moulded fibreglass in almost every area of UK industry - from the flamboyant and unusual, such as the production of high speed vehicles (Formula 1 racing boats have fibreglass hulls) to the eminently practical. Fibreglass moulds offer the perfect construction method for stadium seating, leisure centre fittings and aquatic sports equipment as well as the objects we see daily on our roads and in our towns: bollards, safety cones, speed camera casings and traffic light lenses. According to application, fibreglass, or Glass Reinforced Plastic, can be a high performance material used to combine lightness of weight with extremely streamlined and force-resistant shapes; or a cost effective way of providing mass produced civic furniture.
It's nice to think that, in this age of continual replacement, one material is going as strong (and as light, and as versatile) as it was 50 years ago. Unlike almost any other type of material (steel gave way to alloys; wood gave way to brick) used in large concentrations in the modern world, fibreglass and fibreglass moulds have held sway at the top of their varied "professions" ever since day one. And they don't look like changing any time soon. For versatility, performance and thoroughly up to date flexibility, there's only one substance to choose.
Stuart Pease (Fibreglass) Ltd are the UK's premier fibreglass manufacturers and GRP make glass reinforced plastic or fibreglass moulds to suit the customer needs.

Monday, February 4, 2013

Manufacturing of FRP Boat


Most yachts and boats today are constructed of glass-reinforced plastic (GRP). This strong and resilient material is a combination of a resin (which is made to harden or set chemically) and a strong reinforcement material, usually fibres of glass, which gives the material its common name of fibreglass.
The resin may comprise polyester, solvents, catalysts and other additives. The reinforcement is either glass fibre cloth (a smooth woven fabric), roving (a coarse, basket-like woven fabric) or mat (a random combination of many shortfibre strands of glass).
Production begins with the formation of a smooth female mould (itself usually made of GRP laminate) over a precisely constructed wooden plug, which establishes the hull shape. The colour of the hull is established by gelcoat resin, sprayed against a parting agent, previously applied to the surface of the mould.
Glass and resin are then combined in a hand lay-up process to produce the hull structure. Thickness can be varied by the composition and number of layers and is determined by the correct compromise between the strength and lightness required over different sections of the hull. The deck is produced in the same way.
Thereafter the real skill lies in the fitting out. This includes the construction of bulkheads (athwartships hull-stiffening panels), joinery of the interior and the proper connection of all elements of GRP, wood and metal. 'Sandwich' construction involves laminates of GRP enclosing a core of closed-cell foam or balsa wood. This provides a stiffer structure, weight-for-weight, but has reduced impact resistance. Fittings have to be attached to sandwich hulls and decks carefully, so as not to allow water to seep in and degrade the core.
Increasingly more advanced materials are entering the boat building trade. Epoxy resins and graphite aramid fibres such as KevlarTM, carbon and other new reinforcements promise remarkable strength, stiffness and structural weight-efficiency.
Wooden boat construction
Since the beginning of time, wood has been the traditional boatbuilding material. Ancient ships, and until the nineteenth century, trading and naval vessels, were constructed of wood. Interest in yachting and speed under sail led to lighter but strongly built and carefully designed timber structures. Even 100-year-old yachts, if properly designed, built and cared for, can still be serviceable.
Carvel has always been the most common form of wooden construction. Generally, a skeleton of steam-bent oak is formed to support planks from stem to stern. These are made of light wood in small boats and harder woods, such as elm, in larger craft. The seams between planks are packed with caulking to make the structure watertight.
Clinker/lapstrake construction, common for small boats in the past, is a method where relatively thin, shaped planks overlap each other at the seam. Mechanical fasteners (often copper rivets) join the plank edges, both to seal against leaks and to secure the shell to internal stiffening pieces.
A smoother finish can be achieved by using a moulded wood construction, which involves the fabrication of a single glued-ply unit for the entire hull.
Wooden boatbuilding has had something of a revival in recent years with an increasing number of people rediscovering the joys of more traditional craft. Complete with rigs derived from the working boats of times past, original construction techniques are being enhanced with the use of modern materials, such as epoxy resins, to increase strength and, perhaps most importantly, reduce maintenance while retaining good looks.
The choice of good building materials and a close fit between members are essential to the durability of yachts. Quality construction will go a long way in keeping out water and preventing rot.
Metal boat construction
The strength and durability of metal construction are appealing, particularly for larger yachts. Except for small craft, the traditional riveted connections for steel or aluminium have given way to welded hulls.
Two types of hull framing are possible. Transverse framing involves curved, angled or T-section stiffeners inside the hull in the same pattern as the conventional framing of a traditional wooden hull. Longitudinal framing runs fore-and-aft, itself supported by bulkheads.
Welding is used initially to tack shaped and curved hull plates to the framing grid and to position plate edges to each other. Welding passes are then made to fill all butts and seams, for hull strength and water-tightness. Further selective welds are made to ensure satisfactory connection of the hull plating to framing and stiffeners.
During welding, shrinkage of the weld metal as it cools is a critical issue for the ultimate shape. Therefore, a proper welding sequence, from port to starboard and deck to keel, over the plating must be followed to prevent distortion of the yacht's shape from the desired geometry and to prevent the building up of internal stresses, which may limit the external load-carrying ability of the hull structure.
Skillful lofting - the full-sized drawing out of hull-shape lines, accurate forming of frames and set-up - plus a proper welding sequence, can achieve an accurate, reasonably smooth hull surface. Nevertheless, for a proper yacht-quality hull surface, a layer of fairing compound is required over the metal plating. After a priming coat to inhibit corrosion and ensure proper bonding, the filler material is trowelled on and finally hand-sanded to the desired accuracy and smoothness using long, flexible sanding planks. Conventional or sprayed polyurethane paint coating finishes the job.
boatpartsdatabase.com has lots of resources for the boating trade and public alike.
The web is a vast source of information. Boatpartsdatabase collects the leisure marine industry into one huge database of contacts. Priors Boatyard with years of experience in traditional and classic wooden boat construction is just one example.