A traditional tandem bicycle. The tandem bicycle or twin is a form of bicycle (occasionally, a tricycle) designed to be ridden by more than one person. The term tandem refers to the seating arrangement (fore to aft, not side-by-side) instead of the number of riders. John and Juliet. ...
John and Juliet. ...
Image File history File links No higher resolution available. ...
Image File history File links No higher resolution available. ...
A type of touring bicycle Bicycle touring is a leisure travel activity which involves touring, exploring or sightseeing by bicycle. ...
A bicycle rack is a device to which a bicycle can be securely attached to prevent theft. ...
For other uses, see Bicycle (disambiguation). ...
Antique tricycle 19th century tricycle used in Iran A tricycle (often abbreviated to trike) is a three-wheeled vehicle. ...
Look up Tandem in Wiktionary, the free dictionary. ...
History
Originally tandems were built by welding two bicycle frames together to form a two-person bicycle.[citation needed] Patents related to tandem bicycles date from the late 1800s.[1] Modern technology has improved component and frame designs, and many tandems are as well-built as modern high-end road and off-road bikes. Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. ...
For other uses, see Bicycle (disambiguation). ...
Performance While a tandem has double the pedalling power with only slightly more frictional loss in the drivetrain, it has about the same wind resistance as a single bike. High performance tandems may weigh less than twice as much as a single bike, so the power to weight ratio can be similar to that of a single bike and rider. Tandems can reach relatively high speeds, especially downhill and on flat to rolling terrain. They are not necessarily slower on climbs, but are perceived as such, in part due the need for a high level of coordination between the riders, especially if the physical abilities of the two riders are very different, requiring compromises in cadence or effort level. Note: This page needs to be cleaned up to be brought into conformance with the Manual of Style. ...
In physics, power (symbol: P) is the rate at which work is performed or energy is transferred. ...
Power-to-weight ratio is a measure commonly used when comparing various vehicles (or engines), including automobiles, motorcycles and aircraft. ...
Cadence in cycling is the number of revolutions of the cranks per minute. ...
Terminology On conventional tandems, the front rider steers the bicycle and is known as the captain, pilot, or steersman; the rear rider is the stoker, navigator, or rear admiral. On most tandems the two sets of cranks are mechanically linked by a timing chain and turn at the same rate.
Uses Tandem bicycles are often used in competitions such as the Paralympics with blind and visually impaired cyclists riding as stokers with fully-sighted captains. Silver 2004 The Paralympic Games are an elite multi-sport event for athletes with a disability. ...
This article is about the visual condition. ...
Low vision is alternatively a general term used to describe lowered visual acuity, and a specific legal term in Canada and the United States used to designate someone with vision of 20/70 or less in the better eye with correction. ...
 Independent tandem cycle. Image File history File links Metadata Size of this preview: 800 × 600 pixelsFull resolution (1280 × 960 pixel, file size: 344 KB, MIME type: image/jpeg) File historyClick on a date/time to view the file as it appeared at that time. ...
Image File history File links Metadata Size of this preview: 800 × 600 pixelsFull resolution (1280 × 960 pixel, file size: 344 KB, MIME type: image/jpeg) File historyClick on a date/time to view the file as it appeared at that time. ...
Variations - Independent pedaling
Some designs such as the DaVinci allow independent pedaling through the use of multiple freewheels. In another design, the rear rider steers and propels the rear wheel with pedals, and the front rider propels the front wheel with both hands and feet.[2] - Seating arrangements
- The Opus Counterpoint is an example of a tandem steered by the rear rider who sits upright while the front rider rides in a recumbent position.
- Recumbent tandem tricycles are also gaining popularity throughout the world.
- Tricycles
Tandems are also available as tricycles; the conventional tandem trike has a small but devoted following in the United Kingdom, and is available in one-wheel and two-wheel drive designs. Download high resolution version (900x649, 119 KB)a recumbent tandem bicycles File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...
Download high resolution version (900x649, 119 KB)a recumbent tandem bicycles File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...
Tandem recumbent bicycle manufactured by BikeE A recumbent bicycle is a variety of bicycle which places the rider in a seated or supine position (rarely, in a prone position). ...
Tandem recumbent bicycle manufactured by BikeE A recumbent bicycle is a variety of bicycle which places the rider in a seated or supine position (rarely, in a prone position). ...
Antique tricycle 19th century tricycle used in Iran A tricycle (often abbreviated to trike) is a three-wheeled vehicle. ...
- More than two riders
Tandems can have more than 2 riders — tandem refers to the arrangement of the riders one behind the other rather than the number of riders. Bicycles for three, four, or five riders are referred to as "triples" or "triplets", "quads" or "quadruplets", and "quints" or "quintuplets" respectively. One such familiar to UK TV viewers was the "trandem" ridden by The Goodies. Originally a 2-man tandem with an extra "dummy" seat attached, a full 3-man version was built for them by Raleigh. Look up Tandem in Wiktionary, the free dictionary. ...
This article discusses the Goodies trio and the origins of their comedy TV series For information about the television series, see The Goodies (TV series) The Goodies are a trio of British comedians (Tim Brooke-Taylor, Graeme Garden and Bill Oddie), who created, wrote, and starred in a surreal British...
The Raleigh Bicycle Company is an English bicycle manufacturer originally based in Nottingham in central England. ...
Tandem specific components Due to the additional stresses caused by multiple riders and higher weight, tandems typically require stronger components than ordinary bicycles. - Crankset
The modern tandem has a unique and specific drive train. The captain's crank typically have the chain ring on the left side while the stoker have chain rings on both cranks. The stoker's left crank will be fitted with a similarly sized chain ring as that on the left side crank of the captain thereby connecting their pedal strokes in synch. The stoker's right side traditionally appears as that of a standard single person diamond frame bicycle. A Shimano Deore crankset, drive-side showing crank arm, spider, three chainrings and chainring guard // The crankset, or chainset, is the component of a bicycle drivetrain that converts the reciprocating motion of the riders legs into rotational motion used to drive the chain, which in turn drives the rear...
Synchronization (or Sync) is a problem in timekeeping which requires the coordination of events to operate a system in unison. ...
- Stoker handlebars and stem
Stoker handle bars are typically connected to a stoker stem that is clamped around the captain's seatpost. The stoker handlebars are typically bull horns or very wide drop bars with "stoker pegs" instead of brake levers. Drop handlebars on a racing bicycle allow the rider a variety of positions for aerodynamics and comfort. ...
The stem is the component on a bicycle that connects the handlebars to the steer tube of a bicycle. ...
The seatpost (silver) connects the saddle to the frame (red) A bicycle seatpost or seatpin is an adjustable tube that extends upwards from the bicycle frame to the saddle. ...
- Wheels
Because of the extra weight and stresses generated by the tandem, the wheels tend to be beefier with higher spoke count and heavier rims. The rear wheels tend to run a wider hub/axle to allow the right-side hub flange to be further right of wheel center and thus reduce the total dish of the wheel. Santana tandems use a 160mm wide axle which allows a wheel that is completely "dishless". Other modern tandems use a 145mm wide axle. For the Marcel Duchamp sculpture, see Bicycle Wheel. ...
A spoke is one of some number of rods radiating from the center of a wheel (the hub where the axle connects), connecting the hub with the round traction surface. ...
Rear hubs may also be threaded on the left side to allow the use of an Arai Drum Brake
- Arai drum brake
The Arai drum brake is used during long down hill descents where a typical rim brake (and many disk brakes) would overheat and fail (rim brakes melt tires, disk brake rotor warping or parts melting). The drum of the brake screws onto the left side of the tandem hub, which must be threaded for the drum. The shoe plate slips over the axle and a small toe from the shoe plate engages with the bicycle frame to prevent the plate from turning. The tension on the drum brake is typically controlled using a friction shifter like a BARCON or similar. The brake is designed to be left ON during the descent to maintain a steady speed and the standard brakes can be used to slow when approaching a momentary sharper turn. Linear-pull brake on rear wheel of a mountain bike Bicycle brake systems are used to slow down, or brake a bicycle. ...
- The Eccentric
Many tandems use an eccentric that is placed in the captain's bottom bracket shell. The eccentric is used to adjust the tension of the timing chain. Cheaper tandems use a small adjustable roller which adds more weight and friction and a potential point of failure to the system. Example of using eccentric on steam engine In mechanical engineering, an eccentric is a wheel that rotates on an axle that is displaced from the focus of the circle described by the wheel; in other words, a mechanical motion that can operate either as a cam or a crank, depending...
A square-taper cartridge bottom bracket. ...
Tandem specific riding techniques - Stoker starts clipped in while captain holds bike upright
For those who can get accustomed to the stoker always being clipped in, the distinct advantage to this technique will become obvious when trying to start at the foot of a bridge or on a hill. If the tandem team does not practice this, then they often reserve this type of start for when they are faced with a bridge or hill. This technique allows the stoker to apply continuous power as the captain steadies the bike during the initial take off. This reduces the risk of the bike toppling over due to starting on an incline. The stoker will continue to pedal as the captain attempts to get the foot used for steadying the bike clipped into the pedal. - In-phase cranks vs out-of-phase cranks
Some tandem riders arrange their cranks so that they are 90 degrees out of phase, the "4 banger arrangement". They argue that this produces a smoother power stroke, or that it reduces stress on the drive train because the point of maximum power is reduced to roughly half and distributed over the chain rings. Users of the traditional "two banger" approach say coordination between riders is better with the cranks in phase.
Tandem bicycle manufacturers Since the market for tandem bicycles is significantly smaller than the market for single bikes, there are far fewer tandem bicycle manufacturers than single-bicycle manufacturers. There are a few builders who specialize in tandems, as well as single-bike makers who offer tandem models. Current tandem bicycle manufacturers include: Bohemian Bicycles is a Tucson, Arizona based bicycle manufacturing business. ...
The Cannondale Bicycle Corporation is a major American bicycle manufacturer, headquartered in Bethel, Connecticut USA and manufactured in Bedford, Pennsylvania USA. The company was founded in 1971 by Joe Montgomery to manufacture backpacks and bags for camping and later bicycle trailers for bicycle touring. ...
Co-Motion is a bicycle manufacturing company in Eugene, Oregon. ...
A KHS mountain bike KHS Bicycles is a bicycle manufacturer founded in 1974 with main operations in the United States and Taiwan, but are distributed in over 30 countries. ...
The Trek Bicycle Corporation is a major American bicycle and component manufacturer. ...
Three human powered vehicles: the Gossamer Albatross II and two bicycles. ...
For other uses, see Bicycle (disambiguation). ...
A Torker Unicycle A unicycle is a one-wheeled human powered vehicle. ...
Antique tricycle 19th century tricycle used in Iran A tricycle (often abbreviated to trike) is a three-wheeled vehicle. ...
A modern touring quadricycle - a 2007 model Rhoades Car 4W2PCP Coupe two seater Rhombus layout quadricycle (1886) Coventry Rotary quadricycle (1885) A Quadricycle is a four-wheeled human-powered vehicle. ...
A velomobile or bicycle car is a human-powered vehicle, enclosed for protection from weather and collisions. ...
Kick scooter A kick scooter or push scooter is a small, 2 or more-wheeled platform that is propelled by a rider pushing off the ground. ...
“Roller Skater†redirects here. ...
A standard skateboard An old-school skateboard A skateboard is a four wheeled platform used for the activity of skateboarding. ...
The Trikke works by shifting body weight. ...
It has been suggested that Canadian canoe be merged into this article or section. ...
Look up kayak in Wiktionary, the free dictionary. ...
Rowing in the Amstel River by a student rowing club. ...
Cross-country skiing (aka XC skiing) is an adventure and fitness activity as well as a competitive winter sport popular in many countries with large snowfields, primarily in Europe and Canada. ...
Modern skates Ice skates are boots with blades attached to the bottom, used to propel ones self across ice surfaces. ...
// Kicksled on ice Kicksled is a translation of the Swedish and Norwegian sparkstötting, commonly called spark. Some other possible translations are kicker and chair-sled. The kicksled is a small sled consisting of a chair mounted on a pair of flexible metal runners which extend backward to about twice...
Three human powered vehicles: the Gossamer Albatross II and two bicycles. ...
See also A betchak and its driver wait for a fare in Bandung, Indonesia Rickshaw in Hamburg. ...
Two-wheel truss-frame trailer Image:BOB trailer. ...
Two people enjoying a Sociable The Sociable or Buddy Bike is a bicycle that supports two riders who sit side by side. ...
A modern touring quadricycle - a 2007 model Rhoades Car 4W2PCP Coupe two seater Rhombus layout quadricycle (1886) Coventry Rotary quadricycle (1885) A Quadricycle is a four-wheeled human-powered vehicle. ...
Trailer bike (also known as trailer cycle, Trailerbike, Trail-a-bike, and other trademarked names) is a one-wheeled bicycle trailer designed to carry one or more small riders in positions that closely resemble that of a bicycle rider. ...
Antique tricycle 19th century tricycle used in Iran A tricycle (often abbreviated to trike) is a three-wheeled vehicle. ...
References - ^ Patent Pending Blog: Tandem Bike, 1891. Retrieved on 2007-03-08.
- ^ MY INVENTION;LOVELY BIKE (2007). Retrieved on 2007-9-24.
Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the 21st Century. ...
is the 67th day of the year (68th in leap years) in the Gregorian calendar. ...
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