Jamis Bicycles is an American distributor of bicycles, designed in the USA and built in China and Taiwan. Jamis was acquired in 1990 by G. Joannou Cycle Co.. It is headed by Carine Joannou, chief executive of G. Joannou Cycles since taking over the family business when her father died in 1981. Jamis Bicycles was based in Florida, it introduced the Earth Cruiser, a beach cruiser, in 1979. In 1980, it made the Boss Cruiser, featuring a Cheeks saddle. Jamis sold its Boss Explorer comfort bicycle in 1981, combining the Boss Cruiser and early mountain bikes. In 1983, Jamis launched Jamis Lightfoot and Jamis Roughneck; the first Jamis Dakar in 1985 was a race-ready bicycle from the factory. The Dakar is still sold. In 1988, Jamis introduced the their first road bikes. In 1991, Jamis introduced Coda and Tangier hybrid-style bikes with an upright seating position and 700c tires. Jamis sold the Dragon, its mountain bike, in 1993, featuring a fillet-welded, hand-polished tube frame, Rock Shox front suspension, XTR drivetrain and Ultegra Hubs.
It made its first full-suspension bike in 1995. The off-road Dragon and on-road Eclipse were the first American-made production bikes to have Reynolds 853 tubing on their frames. In 1998, Jamis made the Diablo, with a molded-carbon monocoque frame, its Dakota mountain bike won the Bike of the Year Award from Mountain Biking. In 2000, Jamis won Bike of the Year again for bicycles under $800 with its Dakar Sport. 1998 - Bicycling Magazine's Editor's Choice award for innovative products - Jamis Diablo 1998 - Bicycling Magazine's Bike of the Year Award - Jamis Dakota 2000 - Mountain Biking magazine's Bike of the Year under $800 - Jamis Dakar Sport 2001 - Mountain Biking magazine's Bike of the Year $800 – $1500 - Jamis Dakar Comp 2004 - Bicycling Magazine as The Best Buy for a Comfort Road Bike - Jamis Coda Sport 2005 - Bicycling Magazine’s Editor’s Choice awards for Best Value Full-Suspension Mountain Bike - Jamis Dakar XLT 2005 - Bicycling Magazine’s Editor’s Choice awards for Best Value Enthusiast Road Bike - Jamis Quest 2006 - Bicycling Magazine's Editor's Choice Award as the Best Full Suspension Mountain Bike under $1000 - Jamis Diablo 7×7 2008 - Bicycling Magazine's Editor's Choice Award for Best Enthusiast Road Bike - Jamis Xenith Pro 2009 - Bicycling Magazine's Editor's Choice Award for Best Recreational Road Bike - Jamis Ventura Elite 2010 - Bicycling Magazine's Editor's Choice Award for Best Recreational Road Bike - Jamis Xenith Comp 2011 - Bicycling Magazine's Editor's Choice Award for Best Flat Bar Road Bike - Jamis Coda Sport 2013 - Bicycling Magazine's Editor's Choice Award for Best Recreational Road Bike - Jamis Icon Elite 2013 - Bicycling Magazine's Editor's Choice Award for Best Value 29" Hardtail Mountain Bike - Jamis Dragon 29 Sport 2014 - Bicycling Magazine's Editor's Choice Award for Best Recreational Road Bike - Jamis Icon Elite 2014 - Bicycling Magazine's Editor's Choice Award for Best Women's Flat Bar Road Bike - Jamis Allegro Elite Femme Jamis Bikes Homepage Bicycling Magazine Mountain Biking Magazine Jamis Bikes Canada - Official sales and distribution for Canada
Bike Friday is a brand of high performance travel and folding bicycle made by Green Gear Cycling of Eugene, United States. The company builds tandem bicycles, cargo bikes, bicycles that adjust to different sizes, custom bicycles for people with short stature; the Bike Friday travel bike emphasizes riding characteristics rather than foldability. It packs into a suitcase and "rides like your best bike" according to Ed Pavelka, former senior editor of Bicycling magazine; the company history says they sought to invent a packable bicycle that rode well over serious distances, loaded or unloaded, to save airline baggage fees. The range includes tandems, road and touring models, a freight bicycle, a bicycle that adjusts in sizing; each fits into two standard suitcases that can be converted to a towable trailer. Most Bike Fridays are built to order, all are built in their Eugene factory. List of companies based in Oregon ^ Richard Ballantine, Richard's 21st-Century Bicycle Book, Overlook Press, ISBN 1-58567-112-6 Official website The Folding Society, Buyer's Guide Folding bike comparison chart
Bicycle suspension is the system, or systems, used to suspend the rider and bicycle in order to insulate them from the roughness of the terrain. Bicycle suspension is used on mountain bikes, but is common on hybrid bicycles. Bicycle suspension can be implemented in a variety of ways, any combination thereof: Front suspension Rear suspension Suspension seatpost Suspension saddle Suspension stem Suspension hubBicycles with only front suspension are referred to as hardtail and bicycles with suspension in both the front and rear are referred to as dual or full suspension bikes; when a bicycle has no suspension it is called rigid. Bicycles with only rear suspension are uncommon although the Brompton folding bicycle is equipped with rear only suspension. Although a stiffer frame is preferable, no material is infinitely stiff and therefore any frame will exhibit some flexing. Bicycle designers intentionally make frames in such a way that the frame itself can absorb some vibrations. Besides providing comfort to the rider, suspension systems improve traction and safety by helping to keep one or both wheels in contact with the ground.
As early as 1885, the Whippet brand of safety bicycle was notable for its use of springs to suspend the frame. Front suspension is implemented using a telescopic fork; the specifics of the suspension depend on the type of mountain biking the fork is designed for and is categorized by the amount of travel. For instance, manufacturers produce different forks for cross-country, downhill and enduro riding which all have different demands for amount of travel, durability and handling characteristics. Telescopic suspension forks have become sophisticated; the amount of travel available has increased. When suspension forks were introduced, 80–100 mm of travel was deemed sufficient for a downhill mountain bike; this amount of travel is now common for cross-country disciplines, whereas downhill forks offer 200 mm of travel for handling the most extreme terrain. Other advances in design include adjustable travel, allowing riders to adapt the fork's travel to the specific terrain. Many forks feature the ability to lock out the travel.
This eliminates or drastically reduces the fork's travel for more efficient riding over smooth sections of terrain. The lockout can sometimes be remotely controlled by a lever on the handlebars via a mechanical cable, or through electronics; as with all shock absorbers it consists of two parts: a spring, a damper. The spring may be implemented with a steel or titanium coil, compressed air, or an elastomer. Different spring materials have different spring rates which have a fundamental effect on the characteristics of the fork as a whole. Coil-sprung forks keep an constant spring rate throughout their travel; the spring rate of air-sprung forks however increases with travel. Titanium coils are much lighter but much more expensive. Air-sprung forks are lighter still. Air springs work by using the characteristic of compressed air to resist further compression; as the spring itself is provided by the compressed air rather than a coil of metal it is much lighter. Another advantage of this type of fork design is that the spring rate can be adjusted by changing the air pressure within the fork.
This allows a fork to be tuned to a rider's weight. To achieve this in a coil sprung fork, one would have to swap out different coils with different spring rates; however air pressure controls both spring rate and preload at the same time, requiring air forks to have additional systems to adjust preload separately, adding to its complexity. Another disadvantage of air-sprung forks is the difficulty in achieving a linear spring rate throughout the fork's action; as the fork compresses, the air held inside is compressed. Towards the end of the fork's travel, further compression of the fork requires greater force; this gives the fork its progressive feel. Increasing the volume of the air inside the spring reduces this effect but the volume of the spring is limited by the need to be contained within the fork; the use of two air chambers within the system has allowed a more linear feel to air suspension, this is achieved by having a'reserve' chamber that becomes connected to the main chamber when it reaches a certain amount of compression.
Once achieved, a valve opens and makes the chamber larger. By linking the two, the force needed to compress the air in the chambers is reduced which reduces the exponential spring rate feel traditionally associated with air systems when approaching the end of the suspension's travel; the amount of preload on coil-sprung forks can be adjusted by turning a knob on top of one of the fork legs. Air sprung designs have various ways of dealing with preload. Several systems have been designed to influence preload, such as separately pressurizing different chambers, or systems that automatically set sag after changing the air pressure. A damper is implemented by forcing oil to pass through one or more small orifices or shim stacks. On some models the damper may be adjusted for rider weight, riding style, terrain, or any combination of these or other factors; the two components are separated by housing the spring mechanism in one of the fork's legs and the damper in the other. Without a damper unit the system would rebound excessively and would give the rider less control than would a rigid fork.
To prevent wa
Columbia Manufacturing Inc.
Columbia Manufacturing Inc. is a company located in Westfield, Massachusetts that manufactures chairs and other materials. In the education industry, it is best known for making the desk chair Model 114, used all over the nation. Founded in 1877, it was once owned by Pope Manufacturing Company and was the brand that manufactured bicycles for the company. After Pope filed for bankruptcy in 1915, Columbia continued on to manufacture bicycles in Westfield; as of the 2010s, Columbia-branded bicycles are marketed by Columbia Bicycles, a subsidiary of Ballard Pacific. Company website
A folding bicycle is a bicycle designed to fold into a compact form, facilitating transport and storage. When folded, the bikes can be more carried into buildings, on public transportation, more stored in compact living quarters or aboard a car, boat or plane. Folding mechanisms vary, with each offering a distinct combination of folding speed, folding ease, ride, weight and price. Distinguished by the complexities of their folding mechanism, more demanding structural requirements, greater number of parts, more specialized market appeal, folding bikes may be more expensive than comparable non-folding models; the choice of model, apart from cost considerations, is a matter of resolving the various practical requirements: a quick, easy fold, a compact folded size, or a faster but less compact model. There are bicycles that provide similar advantages by separating into pieces rather than folding. Military interest in bicycles arose in the 1890s, the French army and others deployed folding bikes for bicycle infantry use.
In 1900, Mikael Pedersen developed for the British army a folding version of his Pedersen bicycle that weighed 15 pounds and had 24 inch wheels. It was used in the Second Boer War. In 1941, during the Second World War, the British War Office called for a machine that weighed less than 23 lb and would withstand being dropped by parachute. In response, the Birmingham Small Arms Company developed a folding bicycle small enough to be taken in small gliders or on parachute jumps from aircraft; this British WWII Airborne BSA folding bicycle was rigged so that, when parachuted, the handlebars and seat were the first parts to hit the ground. BSA abandoned the traditional diamond bicycle design as too weak for the shock and instead made an elliptical frame of twin parallel tubes, one forming the top tube and seat stays, the other the chainstay and down tube; the hinges were in front of the bottom bracket and in the corresponding position in front of the saddle, fastened by wing nuts. The peg pedals could be pushed in to avoid snagging and further reduce the space occupied during transit.
From 1942-1945, the British WWII Airborne BSA folding bicycle was used by British & Commonwealth airborne troops and some infantry regiments. The bicycle was used by British paratroopers and second-wave infantry units on the D-Day landings and at the Battle of Arnhem; the 1970s saw increased interest in the folding bike, the popular Raleigh Twenty and Bickerton Portable have become the iconic folders of their decade. It was, the early 1980s that can be said to have marked the birth of the modern, compact folding bicycle, with competing tiny-footprint models from Brompton and Dahon. Founded in 1982, by inventor and physicist Dr. David Hon and his brother Henry Hon, Dahon has grown to become the world's largest manufacturer of folding bikes, with a two-thirds marketshare in 2006. Folding bikes come with a wider range of adjustments for accommodating various riders than do conventional bikes, because folding bike frames are only made in one size; however and handlebar stems on folders extend as much as four times higher than conventional bikes, still longer after-market posts and stems provide an greater range of adjustment.
While folders are smaller in overall size than conventional bicycles, the distances among the center of bottom bracket, the top of the saddle, the handlebars - the primary factors in determining whether or not a bicycle fits its rider - are similar to those of conventional bikes. The wheelbase of many folding designs is very similar to that of conventional, non-folding, bicycles; some manufacturers are producing folding bikes designed around folding systems that allow them to use 26" wheels, e.g. Dahon, KHS, Tern Bicycles. Advantages of smaller wheels include potential for more speed, quicker acceleration, greater maneuverability, easier storage. For example, the A-bike has tiny wheels and folds a bit smaller. Bikes with smaller than 16" wheels are called portable bicycles; these forgo the performance and easy ride benefits of their larger counterparts, acquiring characteristics similar to those of an adult folding kick scooter. Nonetheless, regardless of how each bike folds, the result is easier to transport and store than a traditional bicycle.
Folding mechanisms are variable. Half- or mid-foldMany folding frames follow the classic frame pattern of the safety bicycle's diamond frame, but feature a hinge point allowing the bicycle to fold in half. Quick-release clamps enable lowering steering and seat columns. A similar swing hinge may be combined with a folding steering column. Fold designs may use larger wheels the same size as in non-folders, for users prioritizing ride over fold compactness. Bikes that use this kind of fold include and Montague, Tern. Vertical FoldInstead of folding horizontally, this style of bike has one or two hinges along the main tube and/or chain and seat stays that allow the bike to fold vertically; the result leaves the two wheels side by side but is more compact than a horizontally hinged design. The Brompton and Dahon Qix D8 both feature vertical folding. Triangle hingeA hinge in the frame may allow the rear triangle and wheel to be folded down and flipped forward, under the main frame tube, as in the Bike Friday, Brompton Mezzo Folder, Swift Folder.
Such a flip hinge may be combined with a folding front
A portable bicycle is a bicycle, designed to be small and light enough for easy carrying. It is dismantled to make a convenient bundle and the frame has a folding action to facilitate this; the design of a portable bicycle involves a trade-off between ease of carrying and ease of riding. The first popular bicycles were the large penny-farthings; the pioneering inventor, W. H. J. Grout of Stoke Newington, invented a portable version in which the large front wheel could be dismantled into four pieces so that they would fit into a carrying bag. In the 1890s, Captain Gérard of the 87th Regiment of French Infantry was an advocate of bicycles for military use. To enable his troops to operate in rough terrain, he devised a bicycle which could be folded in two and carried on the soldiers' backs; the first time the Gérard portable bicycle was used, it "gave complete satisfaction and justified all expectations". The bicycles were manufactured by Charles Morel. In 1919, Charles Haskell Clark of New York City filed a patent for a portable bicycle, easy to carry onto trains or street cars.
Additional advantages of small wheels, described in the patent, were the reduced interference with skirts and the ability to dodge in and out among the crowd. The December 1919 issue of Scientific American had an article describing Mr. Clark's "city bicycle"; the riding performance of portable bicycles is challenged by the need to make the bike as small and as light as possible. Rider body weight and size, road conditions have a strong impact on design and on performance. Portable bicycles intended for the East Asia market can be designed for riders lighter than 80 kg and shorter than 174 cm. Northern Europe and America require designs for riders up to 120 200 cm. City roads are smoother in Asian cities, but the bicycle has to be able to ride in crowded city sidewalks. Many European city streets are paved with cobblestone, so portable bicycles marketed in Europe need to cope with such a pavement; the smaller the diameter of a bicycle wheel, the higher the rolling friction and the rougher the ride, a challenge for portable bicycles as well as for kick scooters.
New technological solutions are being studied to offer the same rolling friction at smaller wheel diameters. The point at which a folding bicycle can be considered a portable bicycle is not defined, depends on the user. A benchmark for portability are the Brompton Bicycles, medium-size bicycles that fold well and are the world's most numerous built on a single design. A bicycle easier to carry. Many portable bicycles fold in less than 20 seconds. Above these figures the risk is that the bicycle is too heavy for easy carrying, or takes an inconveniently long time to fold. Folding and unfolding has to be easier than is needed for ordinary full-size folding bicycles, because portable bicycles are used for shorter trips than full-size folding bikes. Frequent uses for a portable bicycle include: last mile scooting from a far away parking lot city district riding subway or bus station shuttle family fun pit bike short distance travelBicycles can reduce fossil fuel emissions by shortening or eliminating car trips, by extending the reach of public transportation as part of a mixed-mode commute.
Portable bicycles can be used by children and so can be kept for a lifetime. Many portable bicycles have been commercially available.
Felt Racing is an American bicycle brand based in Irvine, California. Felt produces road, track, electric bicycles, cruiser bikes. All design is completed in the USA and the majority of production comes from Asia; the company has a strong reputation in the time trial/triathlon bike area. Area and for several years provided bicycles to UCI teams in the Tour de France. Felt still supports several professional level race teams including Hincapie Racing and Team Twenty 16. Felt was founded by Jim Felt in early 1994. Felt nearly disappeared from the domestic market following a fallout with Answer after a 7-year relationship; the brand was relaunched in 2001 as an independent company. On February 3, 2017, Rossignol Group announced the acquisition of Felt Bicycles; the announcement noted that Felt had grown to $60 million in revenue at the time of sale, though terms of the acquisition were not disclosed. Felt has developed several unique bicycle technologies. For its time trial/triathlon bikes, Felt has developed the Bayonet Fork, which utilizes an external steerer in front of the head tube for additional stiffness and aerodynamic efficiency.
Felt has developed the Equilink suspension system for its full-suspension mountain bikes. Felt extensively utilizes wind tunnel and computational fluid dynamics modeling in its frame design process. Felt has issued a recall of 2009 Felt model B12, B16 and S32 road bicycles because the fork steer tube can break, causing the rider to lose control and suffer injuries. In 2007 Felt sponsored the Slipstream–Chipotle bicycle team. In 2009, Felt signed a three-year agreement to supply frames to the Garmin–Slipstream team. On August 28, 2010, Garmin–Transitions announced it was switching working agreements from Felt Bicycles to Cervelo bikes and change its name to Garmin–Cervélo for the 2011 season. Felt chose not to exercise its option with the Boulder-based cycling team after a four-year working agreement; the Cervélo TestTeam folded and some riders moved to Garmin–Cervélo. From 2012 to 2013 Felt Bicycles was the bicycle sponsor for Argos–Shimano with team rider Marcel Kittel winning four stages of the 2013 Tour de France.
In 2014 Felt became the bike sponsor to the US Continental team, Hincapie Sportswear Development Team. The US Women’s track cycling team won a silver medal riding Felt bicycles at the 2016 Olympics in Rio. Daniela Ryf Mirinda Carfrae Sarah Hammer Tim DeBoom Felt Racing Felt Bicycles - USA web site Felt Bicycles - Canada web site Felt Bicycles - European web site Felt Bicycles - International web site