Misplaced Pages

#462537

67-446: The village's first single-person chair lift was opened in 1938 with the first chair lift on Mont Chéry in 1954. Les Gets is situated on the col between Taninges and Morzine , at the western edge of the Portes du Soleil ski area. Les Gets contains a museum of Mechanical Music and hosts a festival of Mechanical Music bi-annually. This has been running for 25 years. During this period

134-460: A cable car or ropeway , is a means of cable transport in which cabins , cars , gondolas , or open chairs are hauled above the ground by means of one or more cables . Aerial lift systems are frequently employed in a mountainous territory where roads are relatively difficult to build and use, and have seen extensive use in mining. Aerial lift systems are relatively easy to move and have been used to cross rivers and ravines. In more recent times,

201-435: A strand . Several strands are wound around a textile core, their twist oriented in the same or opposite direction as the individual wires; this is referred to as Lang lay and regular lay respectively. Rope is constructed in a linear fashion, and must be spliced together before carriers are affixed. Splicing involves unwinding long sections of either end of the rope, and then winding each strand from opposing ends around

268-652: A bridge connection between the adjacent cabins. The main advantage of the funifor system is its stability in high wind conditions owing to the horizontal distance between the two support ropes. Chairlifts are continuously circulating systems carrying chairs, which usually enable skiers to board without removing skis. They are a common type of lift at most ski areas and in mountainous areas. They can also be found at some amusement parks and tourist attractions. Detachable chairlifts usually move far faster than fixed-grip chairlifts, typically 5 m/s (16.4 ft/s) compared with 2 to 2.5 m/s (6.6 to 8.2 ft/s). Because

335-402: A digestif, although the exact constitution of this medicinal drink varies as many residents produce their own. There are many restaurants ranging from the family-friendly and reasonably priced to fairly top-end. They mostly specialise in local savoyard cuisine. Les Gets has many pubs and bars. In the summer, there are all kinds of evening activities in the centre of town, ranging from discos to

402-407: A force is the rate at which it does work , and is given by the product of the driving force and the cable velocity) . In most localities, the prime mover is required to have a backup drive; this is usually provided by a Diesel engine that can operate during power outages. The purpose of the backup is to permit clearing the rope to ensure the safety of passengers; it usually is much less powerful and

469-404: A passenger missing a ski, or otherwise unable to efficiently unload, such as patients being transported in a rescue toboggan . These uses are the chief purpose for a visible identification number on each carrier. Aerial ropeways always have several backup systems in the event of failure of the prime mover. An additional electric motor, diesel or gasoline engine—even a hand crank—allows movement of

536-478: A series of chairs . They are the primary on-hill transport at most ski areas (in such cases referred to as 'ski lifts'), but are also found at amusement parks and various tourist attractions. Depending on carrier size and loading efficiency, a passenger ropeway can move up to 4,000 people per hour, and the fastest lifts achieve operating speeds of up to 12 m/s (39.4 ft/s) or 43.2 km/h (26.8 mph). The two-person double chair, which for many years

603-403: A single haul cable is looped round twice. Funitels combine a short time between successive cabins with a high capacity (20 to 30 people) per cabin. A funifor is a type of cable car with two support ropes and a haul rope, looped around. Each system is composed of a single cabin shuttling back-and-forth. Many installations are built with two parallel, but independent, lines. The funifor design

670-404: A ski industry vernacular . A one-person lift is a "single", a two-person lift is a "double", a three-person lift a "triple", four-person lifts are "quads", and a six-person lift is a "six pack". If the lift is a detachable chairlift, it is typically referred to as a "high-speed" or "express" lift, which results in an "express quad" or "high-speed six pack". The capacity of a lift is constrained by

737-464: Is a fusion of a gondola lift and a chair lift. The company Leitner refers to it as telemix , while Doppelmayr uses the term combination lift . An example is Ski Arlberg 's Weibermahd lift in Vorarlberg ( Austria ) which alternates between 8-person chairlifts and 10-person gondolas. In undeveloped areas with rough terrain, simple hand-powered cable-cars may be used for crossing rivers, such as

SECTION 10

#1732855675463

804-400: Is activated all power is cut to the motor and the emergency brake or bull-wheel brake is activated. In the case of a rollback, some lifts utilize a ratchet like system to prevent the bull-wheel from spinning backwards while newer installations utilize sensors which activate one or more bull-wheel brakes. All braking systems are fail-safe in that a loss of power or hydraulic pressure will activate

871-479: Is an area known as "The Bowl" into which numerous ski runs and chairlifts feed. Also in this area are the resort's most easily accessible black runs: 'Yeti', accessed via the resort's slowest chairlift, La Rosta, and Myrtilles accessed by the Grains d'Or Express. Mont Chéry hosts the majority of black runs, also having numerous red runs, with just one blue and no green pistes. It is the "locals'" mountain, Les Chavannes being

938-399: Is connected to the cable with a steel cable grip that is either clamped onto or woven into the cable. Clamping systems use either a bolt system or coiled spring or magnets to provide clamping force. For maintenance or servicing, the carriers may be removed from or relocated along the rope by loosening the grip. Also called a retention bar or safety bar , these may help hold passengers in

1005-465: Is largely limited to smaller chairlift installations, otherwise the AC motor would need to be significantly oversized relative to the equivalent horsepower DC motor. The driveshaft turns at high RPM , but with lower torque . The gearbox transforms high RPM/low torque rotation into a low RPM/high torque drive at the bullwheel. More power is able to pull heavier loads or sustain a higher rope speed (the power of

1072-457: Is not used for normal operation. The secondary drive connects with the drive shaft before the gear box, usually with a chain coupling. Some chairlifts are also equipped with an auxiliary drive, to be used to continue regular operation in the event of a problem with the prime mover. Some lifts even have a hydrostatic coupling so the driveshaft of a snowcat can drive the chairlift. Carriers are designed to seat 1, 2, 3, 4, 6, or 8 passengers. Each

1139-437: Is useful for children—who do not fit comfortably into adult sized chairs—as well as apprehensive passengers, and for those who are disinclined or unable to sit still. In addition, restraining bars with footrests reduce muscle fatigue from supporting the weight of a snowboard or skis, especially during long lift rides. The restraining bar is also useful in very strong wind and when the chair is coated by ice. Some ski areas mandate

1206-566: Is usually constructed of transparent acrylic glass or fiberglass. In most designs, passenger legs are unprotected; however in rain or strong wind this is considerably more comfortable than no canopy. Among more notable bubble lifts are the Ramcharger 8 at Big Sky Resort , North America's first high speed eight pack; and the longest bubble lift in the world is the American Flyer high speed six pack at Copper Mountain . To maintain safe operation,

1273-668: The French language name of télécabine is also used in an English language context. Gondola lifts are also used for urban transportation. Examples include the Singapore Cable Car , Metrocable (Medellín) , Metrocable (Caracas) , Mi Teleférico ( La Paz ), and London Cable Car . Gondola lifts which feature one stationary 'support' rope and one haul rope are known as bi-cable gondola lifts, while lifts that feature two support ropes and one haul rope are known as tri-cable gondola lifts. Examples include Ngong Ping Skyrail ( Hong Kong ) and

1340-633: The J-bar , the two most common skier transports at the time—apart from mountain climbing . His basic design is still used for chairlifts today. The patent for the original ski lift was issued to Mr. Curran along with Gordon H. Bannerman and Glen H. Trout (Chief Engineer of the Union Pacific RR) in March 1939. The patent was titled "Aerial Ski Tramway,' U.S. patent 2,152,235 . W. Averell Harriman , Sun Valley's creator and former governor of New York State , financed

1407-535: The Peak 2 Peak Gondola (Canada). A funitel differs from a standard gondola lift through the use of two overhead arms, attached to two parallel haul cables, providing more stability in high winds. The name funitel is a blend of the French words funiculaire and telepherique . Systems may sometimes be referred to as "double monocable" (DMC), where two separate haul cables are used, or "double loop monocable" (DLM) where

SECTION 20

#1732855675463

1474-408: The Portes du Soleil . Lift passes can be purchased for Les Gets and the neighbouring area of Morzine, or for the wider Portes du Soleil. Combined, Morzine and Les Gets have around 50 lifts across several distinct ski areas. Lift passes for Mont Chéry (at one side of Les Gets) can also be purchased for that area only. The ski area consists mainly of blue and red runs (beginner and intermediate). There

1541-639: The Roosevelt Island Tramway in New York City , as well as the Portland Aerial Tram . A gondola lift consists of a continuously circulating cable that is strung between two or more stations, over intermediate supporting towers. The cable is driven by a bullwheel in a terminal, which is connected to an engine or electric motor . Multiple gondola cabins are attached to the cable, usually with detachable grips, enabling them to slow down in

1608-499: The tuin used in Nepal. A material ropeway or ropeway conveyor is an aerial lift from which containers for goods rather than passenger cars are suspended. These are usually monocable or bicable gondola lifts . Material ropeways are typically found around large mining concerns, and can be of considerable length. The COMILOG Cableway , which ran from Moanda in Gabon to Mbinda in

1675-464: The "Pot de Bienvenue" (a welcome drink) on a Monday evening. A lot of emphasis is given to children's entertainment, such as wooden games set out in the street, street performers and a carousel. Live bands regularly perform on the semi-permanent stage in the centre of the village, attracting both locals and tourists. In the summer, Les Gets hosts many downhill mountain biking events. There are two distinct downhill mountain bike areas, one on each side of

1742-442: The 17th century for crossing chasms in mountainous regions. Men would traverse a woven fiber line hand over hand. Evolutionary refinement added a harness or basket to also transport cargo. The first recorded mechanical ropeway was by Venetian Fausto Veranzio who designed a bicable passenger ropeway in 1616. The industry generally considers Dutchman Adam Wybe to have built the first operational system in 1644. The technology, which

1809-456: The 1990s are infrequently fixed-grip. Existing fixed-grip lifts are being replaced with detachable chairlifts at most major ski areas. However the relative simplicity of the fixed-grip design results in lower installation, maintenance and, often, operation costs. For these reasons, they are likely to remain at low volume and community hills, and for short distances, such as beginner terrain. Aerial lift An aerial lift , also known as

1876-458: The area is ESF (L'Ecole du Ski Francais), which has a building situated at the foot of the slopes, adjacent to Les Gets Village itself. There is an open-air ice skating rink in the centre of the village. Chair lift An elevated passenger ropeway , or chairlift , is a type of aerial lift , which consists of a continuously circulating steel wire rope loop strung between two end terminals and usually over intermediate towers, carrying

1943-410: The bar must be swung up, out of the way. The physics of a passenger sitting properly in a chairlift do not require use of a restraining bar. If the chairlift stops suddenly (as from use of the system emergency brake), the carrier's arm connecting to the grip pivots smoothly forward—driven by the chair's inertia—and maintains friction (and seating angle) between the seat and passenger. The restraining bar

2010-463: The boarding area. This ensures the correct, safe and quick boarding of all passengers. For fixed grip lifts, a walkway can be designed so that it moves at a slightly slower speed than the chairs: passengers stand on the moving walkway while their chair approaches, hence easing the boarding process since the relative speed of the chairlift will be slower. Aerial passenger ropeways were known in Asia well before

2077-446: The brake. Older chairlifts, for example 1960s-era Riblet Tramway Company lifts, have a hydraulic release emergency brake with pressure maintained by a hydraulic solenoid. If the emergency brake/stop button is depressed by any control panel, the lift cannot be restarted until the hydraulic brake is hand-pumped to proper operating pressure. Some installations use brittle bars to detect several hazardous situations. Brittle bars alongside

Les Gets - Misplaced Pages Continue

2144-402: The bullwheel. This prevents the potentially disastrous situation of runaway reverse operation. The rope must be tensioned to compensate for sag caused by wind load and passenger weight, variations in rope length due to temperature and to maintain friction between the rope and the drive bullwheel. Tension is provided either by a counterweight system or by hydraulic or pneumatic rams, which adjust

2211-441: The cable moves faster than most passengers could safely disembark and load, each chair is connected to the cable by a powerful spring-loaded cable grip which detaches at terminals, allowing the chair to slow considerably for convenient loading and unloading at a typical speed of 0.75 m/s (2.5 ft/s), a speed slower even than fixed-grip. Chairs may be fitted with a "bubble" canopy to offer weather protection. A hybrid lift

2278-403: The chair in the same way as a safety bar in an amusement park ride. If equipped, each chair has a retractable bar, sometimes with attached foot rests. In most configurations, a passenger may reach up and behind their head, grab the bar or a handle, and pull the restraint forward and down. Once the bar has swung sufficiently, gravity assists positioning the bar to its down limit. Before disembarking,

2345-443: The chairlift's control system monitors sensors and controls system parameters. Expected variances are compensated for; out-of-limit and dangerous conditions cause system shutdown. In the unusual instance of system shutdown, inspection by technicians, repair or evacuation might be needed. Both fixed and detachable lifts have sensors to monitor rope speed and hold it within established limits for each defined system operating speed. Also,

2412-419: The chairlift, it is preferable to strike the safety gate—that is, it should not be avoided—and stop the lift than be an unexpected downhill passenger. Many lifts are limited in their download capacity; others can transport passengers at 100 percent capacity in either direction. The boarding area of a detachable chairlift can be fitted with a moving walkway which takes the passengers from the entrance gate to

2479-401: The core. Sections of rope must be removed, as the strands overlap during the splicing process. Every lift involves at least two terminals and may also have intermediate supporting towers. A bullwheel in each terminal redirects the rope, while sheaves (pulley assemblies) on the towers support the rope well above the ground. The number of towers is engineered based on the length and strength of

2546-464: The cost-effectiveness and flexibility of aerial lifts have seen an increase of gondola lift being integrated into urban public transport systems. A cable car ( British English ) or an aerial tramway , aerial tram ( American English ), uses one or two stationary ropes for support while a separate moving rope provides propulsion. The grip of an aerial tramway is permanently fixed onto the propulsion rope. Aerial trams used for urban transport include

2613-644: The detached carriers through the terminals. Aerial lifts have a variety of mechanisms to ensure safe operation over a lifetime often measured in decades. In June 1990, Winter Park Resort performed planned destructive safety testing on Eskimo , a 1963 Riblet Tramway Company two-chair, center-pole fixed grip lift, as it was slated for removal and replacement with a high-speed quad Poma lift. The destructive testing attempted to mimic potential real-life operating scenarios, including tests for braking, rollback, oily rope, tree on line, fire, and tower pull. The data gleaned from this destructive safety testing helped improve

2680-404: The height of some towers to improve clearance over a road. Passenger loading and unloading is supervised by lift operators. Their primary purpose is to ensure passenger safety by checking that passengers are suitably outfitted for the elements and not wearing or transporting items which could entangle chairs, towers, trees, etc. If a misload or missed unload occurs—or is imminent—they slow or stop

2747-406: The lift to prevent carriers from colliding with or dragging any person. Also, if the exit area becomes congested, they will slow or stop the chair until safe conditions are established. The lift operators at the terminals of a chairlift communicate with each other to verify that all terminals are safe and ready when restarting the system. Communication is also used to warn of an arriving carrier with

Les Gets - Misplaced Pages Continue

2814-420: The minimum and maximum rope tension, and speed feedback redundancy are monitored. Many—if not most—installations have numerous safety sensors which detect rare but potentially hazardous situations, such as the rope coming out of an individual sheave. Detachable chairlift control systems measure carrier grip tension during each detach and attach cycle, verify proper carrier spacing and verify correct movement of

2881-411: The most common, though AC motors and AC drives are becoming economically competitive for certain smaller chairlift installations. DC drives are less expensive than AC variable-frequency drives and were used almost exclusively until the 21st century when costs of AC variable-frequency drive technology dropped. DC motors produce more starting torque than AC motors, so applications of AC motors on chairlifts

2948-417: The motive power ( prime mover ), the rope speed, the carrier spacing, the vertical displacement, and the number of carriers on the rope (a function of the rope length). Human passengers can load only so quickly until loading efficiency decreases; usually an interval of at least five seconds is needed. The rope is the defining characteristic of an elevated passenger ropeway. The rope stretches and contracts as

3015-414: The position of the bullwheel carriage to maintain design tension. For most chairlifts, the tension is measured in tons . Either Diesel engines or electric motors can function as prime movers. The power can range from under 7.5 kW (10 hp ) for the smallest of lifts, to more than 750 kW (1000 hp) for a long, swift, detachable eight-seat up a steep slope. DC electric motors and DC drives are

3082-686: The project. Mont Tremblant , Quebec opens in February 1938 with the first Canadian chairlift, built by Joseph Ryan. The ski lift had 4,200 feet of cable and took 250 skiers per hour. The first chairlift in Europe was built in 1938 in Czechoslovakia (present-day Czech Republic ), from Ráztoka, at 620 m (2,034 ft), to Pustevny, at 1,020 m (3,346 ft), in the Moravian-Silesian Beskids mountain range. New chairlifts built since

3149-588: The rope and prevent it from falling if it should come out of the track. They are designed to allow passage of chair grips while the lift is stopping and for evacuation. It is extremely rare for the rope to leave the sheaves. In May 2006, a cable escaped the sheaves on the Arthurs Seat, Victoria chairlift in Australia causing four chairs to crash into one another. No one was injured, though 13 passengers were stranded for four hours. The operator blamed mandated changes in

3216-403: The rope to eventually unload passengers. In the event of a failure which prevents rope movement, ski patrol may conduct emergency evacuation using a simple rope harness looped over the aerial ropeway to lower passengers to the ground one by one. A steel line strung alongside a mountain is likely to attract lightning strikes. To protect against that and electrostatic buildup, all components of

3283-410: The rope, worst case environmental conditions, and the type of terrain traversed. The bullwheel with the prime mover is called the drive bullwheel ; the other is the return bullwheel . Chairlifts are usually electrically powered, often with Diesel or gasoline engine backup, and sometimes a hand crank tertiary backup. Drive terminals can be located either at the top or the bottom of an installation; though

3350-421: The safety and construction of both existing as well as the next generation of chairlifts. As mentioned above, there are multiple redundant braking systems. When a Normal Stop is activated from the control panel, the lift will be slowed and stopped using regenerative braking through the electric motor and the service brake located on the highspeed shaft between the gearbox and electric motor. When an Emergency Stop

3417-447: The sheaves detect the rope coming out of the track. They may also be placed to detect counterweight or hydraulic ram movement beyond safe parameters (sometimes called a brittle fork in this usage) and to detect detached carriers leaving the terminal's track. If a brittle bar breaks, it interrupts a circuit which causes the system controller to immediately stop the system. These are small hooks sometimes installed next to sheaves to catch

SECTION 50

#1732855675463

3484-614: The ski area on the other side of the village. A bus connects the two sides, however it takes just as long as it does to walk. The snowpark has kickers, a spine, rails, boxes, a boarder cross and new for 2007–08 was a large air bag. The park is fairly small and served by a two-man chairlift. Les Gets has an area of the mountain for children only, le Grande Cry. This has two button lifts and several runs, all themed around trappers and Native Americans. They hold weekly treasure hunts for children. Many companies offer ski lessons for adults and children, private and public. The main company operating in

3551-456: The stations to facilitate safe boarding. Fixed grip variants exist, although these are considerably less common. Lifts with a single cable are sometimes referred to as "mono-cable" gondola lifts. Depending on the design of the individual lift, the capacity, cost, and functionality of a gondola lift will differ dramatically. Because of the proliferation of such systems in the Alpine regions of Europe ,

3618-455: The strands such as a broken wire, pitting caused by corrosion or wear, variations in cross sectional area, and tightening or loosening of wire lay or strand lay. If passengers fail to unload, their legs will contact a lightweight bar, line, or pass through a light beam which stops the lift. The lift operator will then help them disembark, reset the safety gate, and initiate the lift restart procedure. While possibly annoying to other passengers on

3685-407: The streets are closed off and barrel organs or orgues fill the streets with mechanical music. Many of the organ grinders come from other European countries, such as Germany and Holland. Traditional Savoy dishes are central to Les Gets cuisine. These include tartiflette , a dish of potatoes "au gratin" with reblochon cheese and lardons. A traditional liqueur, génépi , is also often drunk as

3752-460: The summer of 1936. Prior to working for Union Pacific, Curran worked for Paxton and Vierling Steel, also in Omaha, which engineered banana conveyor systems to load cargo ships in the tropics. (PVS manufactured these chairs in their Omaha, NE facility.) Curran re-engineered the banana hooks with chairs and created a machine with greater capacity than the up-ski toboggan ( cable car ) and better comfort than

3819-417: The system are electrically bonded together and connected to one or many grounding systems connecting the lift system to earth ground. In areas subject to frequent electrical strikes, a protective aerial line is fixed above the aerial ropeway. A red sheave may indicate it is a grounding sheave. In most jurisdictions, chairlifts must be load inspected and tested periodically. The typical test consists of loading

3886-418: The tension exerted upon it increases and decreases, and it bends and flexes as it passes over sheaves and around the bullwheels . The fibre core contains a lubricant which protects the rope from corrosion and also allows for smooth flexing operation. The rope must be regularly lubricated to ensure safe operation and long life. Various techniques are used for constructing the rope. Dozens of wires are wound into

3953-415: The top-drive configuration is more efficient, practicalities of electric service might dictate bottom-drive. The drive terminal is also the location of a lift's primary braking system. The service brake is located on the drive shaft beside the main drive, before the gearbox. The emergency brake acts directly on the bullwheel. While not technically a brake, an anti-rollback device (usually a cam) also acts on

4020-453: The tourist side. There are several spots for off-piste skiing and snowboarding, including to the sides of 'Yeti', the long black run off Chamossiere and one a short hike from the top of the Ranfoilly lift. The latter has been rated as one of the best off-piste powder bowls in Europe (although there is very often a medium chance of avalanches). The snowpark is located on Mont Chéry, which is on

4087-515: The uphill chairs with bags of water (secured in boxes) weighing more than the worst case passenger loading scenario. The system's ability to start, stop, and forestall reverse operation are carefully evaluated against the system's design parameters. Load testing a new lift is shown in a short video. Frequent visual inspection of the rope is required in most jurisdictions, as well as periodic non-destructive testing. Electromagnetic induction testing detects and quantifies hidden adverse conditions within

SECTION 60

#1732855675463

4154-604: The use of safety bars on dangerous or windy lifts, with forfeiture of the lift ticket as a penalty. Vermont and Massachusetts state law also require the use of safety bars, as well as most Ontario and Quebec in Canada. Restraining bars (often with foot rests) on chairlifts are more common in Europe and also naturally used by passengers of all ages. Some chairlifts have restraining bars that open and close automatically. Some lifts also have individual canopies which can be lowered to protect against inclement weather. The canopy, or bubble,

4221-566: The village. The downhill mountain bike run on Mt Chéry has been used in the Mountain Bike World Cups in 1996, 1998, 1999, 2000, 2002, 2003, 2019, 2020, 2021 and in the Mountain Bike World Championships in 2004 and 2022. Les Gets has an 18-hole par 70 golf course 5,264 metres (17,270 ft) long, which overlooks Mont Blanc . In the winter it forms part of the pistes . Les Gets is a linked ski resort within

4288-559: Was developed by the Italian manufacturer, Hölzl, which later merged with Doppelmayr Italia. Today, the design is therefore patented by Doppelmayr Garaventa Group . At the top of each track, the haul rope loops back to the bottom instead of looping over to serve the other track, as would occur with a normal aerial tramway . This is shown in the diagram below. This feature allows for a single cabin operation when traffic warrants. The independent drive also allows for evacuations to occur by means of

4355-618: Was further developed by the people living in the Alpine regions of Europe, progressed rapidly and expanded due to the advent of wire rope and electric drive. World War I motivated extensive use of military tramways for warfare between Italy and Austria. The world's first three ski chairlifts were created for the ski resort in Sun Valley, Idaho in 1936 and 1937, then owned by the Union Pacific Railroad . The first chairlift, since removed,

4422-517: Was installed on Proctor Mountain, two miles (3 km) east of the more famous Bald Mountain , the primary ski mountain of Sun Valley resort since 1939. One of the chairlifts still remains on Ruud Mountain, named for Thomas Ruud a famous Norwegian ski racer. The chairlift has been preserved with its ski jump and original single chairs as it was during WWII. The chairlift was developed by James Curran of Union Pacific's engineering department in Omaha during

4489-543: Was the workhorse of the ski industry, can move roughly 1,200 people per hour at rope speeds of up to 2.5 m/s (8.2 ft/s). The four person detachable chairlift ("high-speed quad") can transport 2,400 people per hour with an average rope speed of 5 m/s (16.4 ft/s). Some bi- and tri-cable elevated ropeways and reversible tramways achieve much greater operating speeds. A chairlift consists of numerous components to provide safe efficient transport. Especially at American ski areas, chairlifts are referred to with

#462537