Flex Hone Valve
Flex Hone Valve
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US $13.99
How Sports Shoes Have Evolved Over The Years
We find ourselves in the midst of Olympic Games fever once again. Our top athletes are competing at the highest level and strive for top honours in their chosen fields. Most of the older will remember the rubber-soled plimsolls that were traditionally worn in PE lessons throughout most schools in Europe. These were available in any colour you liked as long as it was black or white.
These have been replaced by air cushioned, gel filled capsules with superior technical performance. They come in a variety of colours, shapes and forms and are purchased as much for their appearance as their performance. The ground-breaking manufacturing technique that allowed the development of the plimsoll was called vulcanisation, which is still used today. This process uses heat to meld rubber and cloth together. Sulphur is used during the process.
Plimsolls were revolutionary at the time as they provided comfort, were lightweight and allowed the user to move around silently. Plimsolls became known as sneakers and were sold on a mass scale in America as early as 1917. In the four years since the last Olympics in Athens technology has moved on somewhat and has definitely moved on since the plimsoll days.
Trainers and clothing has evolved to be lighter and stronger. But what part has technology had to play in enhancing the performance of our Olympians? Trainers and sport shoes have evolved, we have different shoes for each event and each pair of shoes is manufactured from a variety of number materials chosen because of their individual properties to put strength and flexibility where it is needed most.
Materials such as Kevlar which is ten times stronger than leather, leather or canvas which is both thin, stable and of a low density, foam blown polyurethane which gives a shoe extra cushioning and thermoplastic polyurethane which make a shoe both strong and pliable.
As technology has evolved scientists have developed new composite materials which work together to produce a better performance than that of the two or three separate materials. Differing materials offer different properties such as stability; offering resistance to twisting and warping. When weight is applied to a material over a period of time it will creep (flatten out and spread).
Some materials are used for their elastic properties, the ability to flex and bend when force is applied and then retain its original shape when the force is removed. Finally, some materials are chosen for their density which can be explained as the amount of matter in an object has per measurement of space, these materials are generally used for shock absorption.
Polyurethane is a unique material that offers the elasticity of rubber combined with the toughness and durability of metal. The flexible type of polyurethane is used to make upholstery, mattresses, earplugs, chemical-resistant coatings, specialty adhesives and sealants, and packaging.
It also comes to the rigid forms of insulation for buildings, water heaters, refrigerated transport, and commercial and residential refrigeration. It is used in the manufacture of sports shoes because of its lightweight shock absorption properties as well as being pliable as well as having great torsional and bending strength. Kevlar is one of the most important man-made organic fibres ever developed. The fibre possesses a remarkable combination of properties that has led to its use in a variety of commercial products since its invention in the 1970's.
The fibres of Kevlar consist of long inter-connecting molecular chains produces from poly - paraphenylene terephthalamide. Kevlar offers high tensile strength with a low weight, structural rigidity, low electrical conductivity, high chemical resistance, low thermal shrinkage, excellent dimensional strength, high cut resistance, flame resistant and self extinguishing. Pretty versatile really!
Spiked running shoes have been around for over 100 years created by the British company Reebok in the 1890's. The spiked shoe was developed out of necessity. The founder of the company enjoyed running and wanted to develop a shoe that would increase his speed.
In 1925 a company called Adi Dassler now known as Adidas created a range of shoes with hand-forged spikes. They offered a range of shoes for different distances. The company used the strongest and lightest materials available at the time to make the running shoes. Adi Dassler's brother went on to found the Puma sports shoe company.
The involvement of science and technology in the 1970's sports shoe manufacturers employed experts to conduct research into how humans run. They also investigated the shock effect to the body caused by the collision between the feet and the ground. Their finding helped to develop new, improved sports shoes.
Their research found three types of running styles:
Neutral:
This is where the heel of the runner makes contact with the ground and the foot travels in a straight line as it moves forward.
Pronation:
This where the heel hits the ground but this time the foot moves to the side as it travels forward. It refers to the inward roll of the foot.
Supenation:
This is where the heel hits the ground and the foot rolls outward. In modern times such materials as foam, silicon, air or gel have been added into trainers, these have been used to create cushioning systems in modern running shoes. In the 1970's a plastic called 'ethylene vinyl acetate (EVA)' was developed.
This material revolutionised the construction of sports shoes. It was made up of tiny air bubbles that provide cushioning and absorbs shock. This material is injection moulded into shapes, which serve as heel supports. Nike's Air technology, which used a gas-filled bag of air inserted in the sole of the shoe to cushion the impact of running, first appeared in 1979. The pair of sneakers was named; Tailwind and these technologically advanced air-soles had provided a good foundation for which further Nike advancements are based on.
Since then, athletic shoes have become increasingly specialized and prices for various sneakers have grown in accordance to the advances in technology and its value-added features. Some shoes sold in the 1980's even included a pump valve so you could inflate or deflate the heel on your shoe as if they were bicycle tyres
Following the introduction of Nike shoes, a technical breakthrough occurred in 1972 when Bill Bowerman, while studying the pattern on a waffle iron, came up with a great idea - waffle soles. Bowerman then cooked some rubber in his waffle iron and glued it to the bottom of a pair of shoes, which he later gave to athletes to test. The athletes came back with great reviews and the sneakers were well received in the market.
The patented outsole revolutionized running by offering better traction in a lighter-weight, more durable shoe.
In 2003 American spent on average 50 dollars on a pair of sports shoes. Companies sponsor most top athletes. This means that they are paid a fortune to wear the company's products during a sporting competition.
The Olympics is the biggest sporting event in the world attracting worldwide television viewers. This offers an ideal opportunity for sports companies to get their products seen. As well as being finely honed athletes and sports people, athletes are now fantastic marketing tools for the sport shoe companies. Wouldn't it be interesting if all the athletes in this year's Olympics had to wear plimsolls, the only choice they could make would be the colour, black or white?
We'd see the real Olympic champions then.
About the Author
You may not always agree with my writings but I hope to inform.
Harwood E Woodpecker
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Brush Research 1/2 Flex-Hone®. Each $15.83 Manufacturer: Brush Research. Each. 90 day warranty on material and workmanship Customers also search for: Discount Brush Research 1/2" Flex-Hone®, Buy Brush Research 1/2" Flex-Hone®, Wholesale Brush Research 1/2" Flex-Hone®, BC1218, Brake Repair Tools |
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Brush Research BRMBC10MM 10mm 180 Grit Flex Brake Cylinder Hone $29.11 Boron Carbide abrasive. 8 Oal. Size: 0.394 . 10mm 180 Grit Flex Brake Cylinder Hone. Sold Individually. |
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Brush Research Brake Rotor Flex Hone. Each $37.39 Manufacturer: Brush Research. Each. Features Benefits: Lowers harmonic vibrations. Harmonic vibration at the pad-rotor interface is a prime cause of friction induced braking noise. The Flex-Hone for Rotors reduces high pitched "squeal" and "groan" cau |
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Brush Research 11mm 180 Grit Silicon Carbide Flex-Hone®. Each $12.74 Manufacturer: Brush Research. Each. 90 day warranty on material and workmanship Customers also search for: Discount Brush Research 11mm 180 Grit Silicon Carbide Flex-Hone®, Buy Brush Research 11mm 180 Grit Silicon Carbide Flex-Hone®, Wholesale Brush Resea |
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Brush Research Mfg BRMGB334 3.75 95mm Standard Duty Flex Hone $53.35 33/4 (95mm) Standard Duty Flex Hone. Restores cross hatch and finishes engine cylinder bores. Standard duty flexhones. 131/2 overall length. |
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Brush Research Mfg BRMGB418 4.13 105mmStandard Duty Flex Hone $58.23 Brush 41/8 (105mm)Standard Duty Flex Hone. Restores cross hatch and finishes engine cylinder bores. Standard duty flexhones. 131/2 overall length. |
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Brush Research Mfg Flex-Hone for Brake Rotors (Medium Grit) $43.95 Flex-Hone for rotors utilizes the patented Flex-Hone technology to produce the ideal surface finish on automotive and motorcycle disc brake rotors, automotive fly wheels and clutch plates More rotors per hone than abrasive pads Lowers harmonic vibrations Produces a non-directional pattern Ideal for a new and returned rotors and flywheels |
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Brush Research Mfg Flex-Hone for Brake Rotors (Fine Grit) $43.95 Flex-Hone for rotors utilizes the patented Flex-Hone technology to produce the ideal surface finish on automotive and motorcycle disc brake rotors, automotive fly wheels and clutch plates More rotors per hone than abrasive pads Lowers harmonic vibrations Produces a non-directional pattern Ideal for a new and returned rotors and flywheels |
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Brush Research Flex Hone for Rotors. Each $40.27 Manufacturer: Brush Research. Each. Customers also search for: Discount Flex Hone® for Rotors, Buy Flex Hone® for Rotors, Wholesale Flex Hone® for Rotors, ToolWeb, Honing Tools |
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Brush Research Mfg 4'' to 3?'' (101mm) Heavy Duty Flex Hone $74.95 For restoring cross hatch in cylinder and finishing cylinder after boring/honing Heavy duty flex-hone has larger abrasive area compared to standard duty 13?" overall length |
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Brush Research Mfg 4?'' to 4?'' Heavy Duty Flex Hone $78.95 For restoring cross hatch in cylinder and finishing cylinder after boring/honing Heavy duty flex-hone has larger abrasive area compared to standard duty 13?" overall length |
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Brush Research Mfg 3?'' to 3?'' (89mm) Heavy Duty Flex Hone $60.95 For restoring cross hatch in cylinder and finishing cylinder after boring/honing Heavy duty flex-hone has larger abrasive area compared to standard duty 13?" overall length |
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Brush Research Mfg 3?'' to 3'' (83mm) Heavy Duty Flex Hone $58.95 For restoring cross hatch in cylinder and finishing cylinder after boring/honing Heavy duty flex-hone has larger abrasive area compared to standard duty 13?" overall length |
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Brush Research Mfg 3?'' to 3?'' (95mm) Heavy Duty Flex Hone $64.95 For restoring cross hatch in cylinder and finishing cylinder after boring/honing Heavy duty flex-hone has larger abrasive area compared to standard duty 13?" overall length |
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Brush Research Mfg 4?'' to 4'' (108mm) Heavy Duty Flex Hone $73.95 For restoring cross hatch in cylinder and finishing cylinder after boring/honing Heavy duty flex-hone has larger abrasive area compared to standard duty 13?" overall length |
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1 3/8" 180 Grit Flex Brake Cylinder Hone .. $20.52 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical stru |
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2 1/2" 180 Grit Flex Brake Cylinder Hone .. $24.41 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder. The FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical str |
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2 1/4" 180 Grit Flex Brake Cylinder Hone .. $23.55 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder, the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical str |
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3 1/2" 180 Grit Flex Engine Cylinder Hone .. $53.21 Manufacturer: Brush Research. Each. Features Benefits Size---3-1/2 ---(89mm) For any type and size of cylinder the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry |
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3 3/4" 180 Grit Flex Engine Cylinder Hone .. $56.51 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder, the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical str |
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3 1/4" 180 Grit Flex Engine Cylinder Hone .. $50.01 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder, the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical str |
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4 1/4" 180 Grit Flex Engine Cylinder Hone .. $60.49 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder, the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical str |
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2 3/4" 180 Grit Flex Brake Cylinder Hone .. $26.67 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder, the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical str |
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1 1/8" 180 Grit Flex Brake Cylinder Hone .. $17.38 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder, the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical str |
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3/4" 180 Grit Flex Brake Cylinder Hone .. $15.78 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder The FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical stru |
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5/8" 180 Grit Flex Brake Cylinder Hone .. $16.05 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical stru |
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7/8" 180 Grit Flex Brake Cylinder Hone .. $15.89 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical stru |
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5 1/2" 180 Grit Flex Engine Cylinder Hone .. $100.81 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder, the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical str |
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4 1/2" 180 Grit Flex Engine Cylinder Hone .. $66.36 Manufacturer: Brush Research. Each. Features Benefits: For any type and size of cylinder, the FLEX-HONE process (Superfinishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical str |
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Brush Research 3" 180 Grit Flex Brake Cylinder Hone. Each $31.79 Manufacturer: Brush Research. Each. Customers also search for: Discount 3" 180 Grit Flex Brake Cylinder Hone, Buy 3" 180 Grit Flex Brake Cylinder Hone, Wholesale 3" 180 Grit Flex Brake Cylinder Hone, ToolWeb, Honing Tools |
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Brush Research 3" 180 Grit Flex Engine Cylinder Hone. Each $49.3 Manufacturer: Brush Research. Each. Customers also search for: Discount 3" 180 Grit Flex Engine Cylinder Hone, Buy 3" 180 Grit Flex Engine Cylinder Hone, Wholesale 3" 180 Grit Flex Engine Cylinder Hone, ToolWeb, Honing Tools |
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CTA Rotors Flex Hone (Coarse) $59.95 Reduces brake noise caused by spiral grooves on the braking surface Ideal for new or re-turned rotors and flywheels Use at low speed only (500 ? 600 RPM) |
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CTA Rotors Flex Hone (Fine) $59.95 Reduces brake noise caused by spiral grooves on the braking surface Ideal for new or re-turned rotors and flywheels Use at low speed only (500 ? 600 RPM) |
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CTA Rotors Flex Hone (Medium) $59.95 Reduces brake noise caused by spiral grooves on the braking surface Ideal for new or re-turned rotors and flywheels Use at low speed only (500 ? 600 RPM) |
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Brush Research BURMFHC Flex Hone for Rotors $49.06 Lowers Harmonic Vibrations Harmonic vibration at the padrotor interface is a prime cause of friction induced braking noise. The FlexHone for Rotors reduces high pitched squeal and groan caused by a peaky rough turned finish. More Rotors Per Hone Lasts much longer than abrasive pads. NonDirectional Finish Spiral grooves on the braking surface are a prime cause of friction induced brake noise. Ideal for New Rotors too. Removes the cut torn and folded metal fragments from the surface. |
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Brush Research BURMFHM Flex Hone for Rotors Medium $49.06 Lowers Harmonic Vibrations Harmonic vibration at the padrotor interface is a prime cause of friction induced braking noise. The FlexHone for Rotors reduces high pitched squeal and groan caused by a peaky rough turned finish. More Rotors Per Hone Lasts much longer than abrasive pads. NonDirectional Finish Spiral grooves on the braking surface are a prime cause of friction induced brake noise. Ideal for New Rotors too. Removes the cut torn and folded metal fragments from the surface. Size: Medium. |
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Brush Research BRMRMFH120Z25 Brake Rotor Flex Hone $54.8 Features and Benefits: Lowers harmonic vibrations.A Harmonic vibration at the padrotor interface is a prime cause of friction induced braking noise.A The FlexHone for Rotors reduces high pitched squeal and groan caused by a peaky rough turned finish.A More rotors per hone lasts much longer than abrasive pads.A Nondirectional finish spiral grooves on the braking surface are a prime cause of friction induced brake noise. Ideal for new rotors tooA Removes the cut torn and folded metal fragments from the surface. |
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Brush Research BRMBC1218 Hone Brake Cylinder Flex 0.25 Inch 180 Grit $29.25 For brake cylinders 44; hydraulics valve guides. High quality components. Many designs available match your personal style. Satisfaction ensured. |