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Know Your Bike Frame by Alastair Hamilton

The bicycle is over 200 years old. It's evolution proceeded quickly when it was first invented, and the changes continue to this day.

The bicycle can trace its history back to Germany in the year 1817, when inventor Karl Drais developed a push bike - one without pedals.

Like any other invention there were actually quite a few contributors to the changing design over the years. Other inventors who contributed to the evolution of the bicycle are Scottish blacksmith Kirkpatrick MacMillan, Frenchmen Ernest Michaux and Pierre Lallement, and Englishman James Starley - whose bicycle design, with the extremely large front wheel and the extremely tiny rear wheel was called the "penny farthing." The "safety bicycle", with both wheels the same height in a "diamond frame" that is still in use today, came into use in 1885, and in 1888 rides became much more comfortable with the invention of the "pneumatic" tire by Scotsman John Boyd Dunlop.

Over One Hundred Years Later, Improvement Continues

Just over a hundred years later, the basic design of the bicycle has not changed, but improvements are nevertheless being made all the time. The "new age" materials now in use - aluminum, titanium and carbon fire - have enabled bicycles to be made just as sturdy as can be desired, but with the light weight which most people these days desire.

The diamond bicycle frame consists of a series of tubes: the main triangle which consists of the head tube, top tube, down tube and seat tube. The rear triangle consists of the seat tube, paired chain stays and seat stays.

What are bicycle frames made of? The metal they're made of is important, because a lot of factors have to be taken into account: the density of the metal will determine how heavy the bike is, the stiffness will affect the ride comfort and the control efficiency. There is always the danger of crashes so yield strength is important - how much force will permanently "deform" the metal? Also a consideration for crash-worthiness is the elongation capability of the metal. And then there's the fatigue limit and the endurance limit.

A great many bike frames are made from steel. It's got all the best qualities needed for a frame, but its major drawback is that it is very heavy.

Aluminum is very popular for use in bike frames, because of its very low weight. But the problem with aluminum is that it is very easy to bend it - and thus break it.

Titanium is rapidly becoming a popular material for bike frames. It's strong, and its light...and its very expensive. Only high-end bicycles are made with titanium.

Carbon fiber is a non-metallic material for making bicycle frames. It is light weight, resists corrosion, and can be formed into practically any shape desired. However, carbon fiber does have low impact resistance, so it's not so good for the mountain biker. And of course it's expensive also

Bicycle manufacturers are always experimenting with new materials, of course. Currently, the use of thermoplastics is being tested, as is that of magnesium.

There's great days ahead for the evolution of bicycling, so keep your helmet on and go full speed ahead!

Alastair Hamilton is the author of many resources about bicycle parts and bike frames. Read more at http://www.bikecyclingreviews.com

Article Source: http://www.earticlesonline.com/Article/Know-Your-Bike-Frame/97994

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Check out these fine shops that offer Bike Bicycle Tire products:


Fort Greenway Mountain Bike Tire


Fort Greenway Mountain Bike Tire


$10.99


Fort Greenway Mountain Bike Tire. Your connection to nearby neighborhoods, parks and other points of interest is a close as a local trail, road, fire road or greenway. And whatever pathway you choose, you can rest assured that the Fort Greenway bicycle tire will keep you rolling along in smooth comfort.

Fort Greenway-K Mountain Bike Tire


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Fort Metro-K Road and Mountain Bike Tires


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Fort Metro Road and Mountain Bike Tires


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Fort Metro Road and Mountain Bike Tires. This versatile Fort Metro bicycle tire is perfect for your early morning commute, a leisurely cruise around campus, that long distance tour you've been meaning to take or sweating it out on the indoor trainer!

Spin Doctor Steel Core Tire Levers


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Giro Phase Mountain Bike Bicycle Helmet


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Giro Xen Mountain Bike Bicycle Helmet


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Continental Traffic Mountain Bike Tire


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Continental Traffic Mountain Bike Tire. Cruise through traffic on the road or ride with confidence on the trail, thanks to this smooth and comfortable Mountain Bike tire.

Bell Delirium Mountain Bike Bicycle Helmet


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GORE BIKE WEAR Bicycle Helmet Cap


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2010 Bell Variant Mountain Bike Bicycle Helmet


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Fort Dartmoor Mountain Bike Tire


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Fort Dartmoor Mountain Bike Tire. With the Fort Dartmoor Mountain Bike Tire you can dart down the trail with greater speed and cornering confidence than ever before!

Geax Street Runner Mountain Bike Tire


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Geax Street Runner Mountain Bike Tire. Run the streets on your mountain bike with the Geax Street Runner Bike Tire, also great for the trainer.

Bell Influx Mountain Bike Bicycle Helmet


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Bell Influx Mountain Bike Bicycle Helmet. The fact that this is the world's best Bicycle Helmet value is kind of beside the point. With features like 18 massive vents, Fusion In-Mold Microshell, blade visor, GPS Fit System, channeled ventilation and Cam-Lock levers, the Influx is a great Mountain Bike Bicycle Helmet at any price.

Geax AKA Mountain Bike Tire


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Geax AKA Mountain Bike Tire. New for 2010, the Geax AKA Mountain Bike tire was born for ultimate traction. The tire's knobs penetrate the ground without digging or slowing the wheel. Conquer gravel, sand, or any other dry, compact terrain.

Giro Athlon Mountain Bike Bicycle Helmet


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Giro Athlon Mountain Bike Bicycle Helmet. If your mountain bike riding style involves a timing chip and number plate, then you'll be relieved to know that Giro has developed a competition-specific bike Bicycle Helmet just for you. Compact shape, 23 Wind Tunnel vents and low-profile P.O.V. visor maximize comfort and performance on the race course.

2012 Giro Athlon Mountain Bike Bicycle Helmet


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2012 Giro Athlon Mountain Bike Bicycle Helmet. If your mountain bike riding style involves a timing chip and number plate, then you'll be relieved to know that Giro has developed a competition-specific bike Bicycle Helmet just for you. Compact shape, 23 Wind Tunnel vents, low-profile P.O.V. visor and the new Roc Loc 5 retention system maximize comfort, fit and performance on the race course.

Giro E2 Mountain Bike Bicycle Helmet Slate Small


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Giro E2 Mountain Bike Bicycle Helmet Slate Small. Whether you're attacking the singletrack or cruising through the great wide open, the Giro E2 Mountain Bike Bicycle Helmet is a proven winner on the trail.

Continental Town and Country Mountain Bike Tire


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Continental Town and Country Mountain Bike Tire. The Continental Town and Country Bike Tire is the standard in 'townie' tires for commuting, touring or riding with the family.

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