VINTAGE RC DUBRO #2112 ~ 2X6MM SOCKET HEAD CAP SCREWS SHCS ~ SET OF 4

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eBay VINTAGE RC DUBRO #2112 ~ 2X6MM SOCKET HEAD CAP SCREWS SHCS ~ SET OF 4 PARTS ARE BRAND NEW IN FACTORY BAG (AS SHOWN) *DETAILED PICTURES PROVIDED – WHAT YOU SEE IS WHAT U GET* *INTERNATIONAL SHIPPING DONE THROUGH EBAY GLOBAL SHIP* *HAPPY BIDDING!!!* manufacturers of radio controlled cars, trucks and accessories. Associated Electrics is now owned by Thunder Tiger Corporation from Taiwan. The company is usually referred to as Team Associated. Early history[edit] The company was founded in 1964 by Roger Curtis and Lee Yurada, technicians at the Douglas Aerophysics Laboratory in nearby El Segundo, California. Slot cars were at the height of their popularity in Southern California at the time, so Curtis and Yurada decided to open a slot car track as a side business. Their experience in fabricating aircraft parts soon led them into producing slot car parts and accessories. So successful was the venture that it turned into a full-time business which they named Associated Electrics. The new company specialized in the manufacturing of a full line of slot car parts, chassis and accessories. The business had grown by 1969 and was located in a small building in Paramount. Personal issues arose between Curtis and Yurada, leading Curtis to approach early RC racer Gene Husting in hopes that Husting would buy Yurada’s share of Associated. The popularity of slot cars was on the wane, but Husting was certain that radio control would flourish as the technology grew. Almost as if in anticipation of the fact, Associated had just introduced a 1:8-scale gas-powered racer, the RC1. Designed by Mike Morrisey, it soon became the most successful car on the circuit. Husting agreed to the buyout in 1970. Still a small business, Associated had only six employees: Husting, Curtis, Husting’s wife Midge, and three others. Radio control takes off[edit] In 1971, Associated moved to Santa Ana, California where they began production of the Husting-designed Associated RC100. In 1977, the first IFMAR race at Pomona’s Thorp Raceway (later to become the Ranch Pit Stop, temporary home of Team Losi) saw the first five places swept by the RC100. Industry develops along with the RC12[edit] Associated would double in size thanks to Roger’s next design, the 1:12-scale RC12 electric onroad racer, debuted in 1978. Simpler and far less expensive than the gas powered RC100, the RC12 is credited for much of the hobby’s growth as a sport. Expansion into Reedy electric motors[edit] As electric racing continued to grow, 1980 would see one of Associated’s most important partnerships come to fruition when electrical engineer and avid R/C racer Mike Reedy joined Associated. Reedy’s development of Yokomo-based motors and carefully matched battery packs led Associated’s dominance of electric racing. Reedy-powered cars are credited with 28 IFMAR World Championships to date, the most of any R/C motor manufacturer. The RC10 generates a new phase of expansion[edit] Early model RC10 buggy. Roger Curtis’s 1984 design of a serious 1:10-scale electric offroad car not only led to explosive growth within the company, but within the world of R/C racing as well. This new vehicle was the now-famous Associated RC10 buggy. Built on a 6061 aircraft alloy chassis, the new car was, unlike its Japanese counterparts of the time, a serious offroad racing machine. Another 1-2-3 IFMAR sweep would follow in 1985 at the first IFMAR 1:10 Electric Off-Road World Championship. The RC10, possibly more than any R/C vehicle before or since, is credited with making the single biggest impact on radio control racing. The success of the RC10 forced Associated to move to a larger facility, which they found in Costa Mesa in 1987. That same year, former Yamaha technician and professional R/C racer Cliff Lett joined Associated to head the research and development department. This department, consisting of Lett, Roger Curtis and Husting’s son, Curtis, were responsible for the RC10 cars that won the IFMAR World Championships in 1989 in Australia, and in 1991 in Detroit. The success of the RC10 coupled with other cars of the time, namely the RC12LW, the RC10L, RC10LSS and the RC10T kept production going for five years and prompted the necessity of extending their building in Costa Mesa. Gene Husting helped develop cars for Associated until 2000, when he retired. He is responsible for the lineup up to the RC10B3, RC10T3, TC3 and GT RTRs. Five years after his retirement, the company introduced an entirely new line of offroad racers with the introduction the 1:18 scale electric RC18T and RC18MT miniature trucks. In 2006, with 27 IFMAR victories in all, Team Associated is the world’s « winningest » RC car manufacturer. Reedy motors, a division of Associated, has powered 28 IFMAR World Champions. R&D manager and world-class driver Cliff Lett broke the RC land speed record of more than 111 mph (179 km/h) with a heavily modified Associated RC10L3 touring car at Irwindale Speedway on January 13, 2001. A modified RC10 with an off-the-shelf Parma International 1963 Chevrolet Corvette body was used in the famous chase scene in the 1988 motion picture, The Dead Pool. In it, Clint Eastwood as Dirty Harry is being pursued through the streets of San Francisco, California by a highly explosive bomb disguised as an RC car. The « bomb » was actually driven by IFMAR world-champion race driver Jay Halsey. The car was in fact an electric; the sounds of a nitro-powered engine were added in post-production. New Ownership[edit] In 2000, Gene Husting took the decision to retire and sold his share to Roger Curtis.[1] In 2005, Curtis took semi-retirement and sold Associated Electrics to Thunder Tiger, a Taiwanese RC model manufacturer.[2] Thunder Tiger expressed hope that the buyout of Associated would make it the fourth largest RC model merchant in the world, following the three leaders at that time (in order) Tamiya, Kyosho, and Futaba/O.S. Engines.[3] Off shoots & Conversions[edit] Team Associated cars have inspired various conversion from small companies. Several offroad buggies have been developed from the TC3 chassis, most notably the TC3 ‘o’, the Durango range, and recently (and most successfully) JConcepts with their BJ4 and Worlds-winning BJ4 ‘Worlds’. All these cars are based around the TC3’s solid transmission, which uses two bevel-geared differentials (or « diffs »), with a prop shaft connecting them. On the BJ4, JConcepts used AE diff cases and diffs, and modified the shaft to include a slipper unit. Since then, JConcepts has updated the BJ4 to the Worlds-winning ‘Worlds’ edition. In Summer 2006, JConcepts « turned the drawings over to Team Associated, which took over and fine-tuned the design for fit and finish » (RC Driver magazine, Dec. 2007). The Associated B44 debuted at the 2007 EP Off-Road World Championships, where it not only qualified on top, but took all three podium positions. X-Factory, creators of the X-5 4WD Team Losi conversion, released the X-6 conversion kit which converts the B4 Buggy into a mid-motor 4×2 cell configuration chassis. In the onroad scene, the Associated RC12 series of cars have long been a base for other manufacturers. The unique front suspension from the RC12L3 (and updated on the RC12L4) has become industry standard and is now featured on the majority of competitive 1:12-scale racing chassis. Radio-controlled cars (or RC cars for short) are miniature model cars or trucks that can be controlled from a distance using a specialized transmitter or remote. The term « RC » has been used to mean both « remote controlled » and « radio controlled », where « remote controlled » includes vehicles that are controlled by radio, infrared or a physical wire connection (the latter is now obsolete). Common use of « RC » today usually refers only to vehicles controlled by radio, and this article focuses on radio-controlled vehicles only.[1] Cars are powered by various sources. Electric models are powered by small but powerful electric motors and rechargeable nickel-cadmium, nickel metal hydride, or lithium polymer cells. There are also brushed or brushless electric motors – brushless motors are more powerful and efficient, but also much more expensive than brushed motors. Most fuel-powered models use glow plug engines, small internal combustion engines fueled by a special mixture of nitromethane, methanol, and oil (in most cases a blend of castor oil and synthetic oil). These are referred to as « nitro » cars. Recently, exceptionally large models have been introduced that are powered by small gasoline engines, similar to string trimmer motors, which use a mix of oil and gasoline. Electric cars are generally considered easier to work with compared to fuel-driven models, but can be equally as complex at the higher budget and skill levels. Both electric and nitro models can be very fast, although electric is easier to upgrade and more versatile. In both of these categories, both on-road and off-road vehicles are available. Off-road models, which are built with fully functional off-road suspensions and a wide tire selection, can be used on various types of terrain. On-road cars, with a much less robust suspension, are limited to smooth, paved surfaces. There are also rally cars, which fall somewhere between on-road and off-roadand can be driven on gravel, dirt or other loose surfaces. In the past decade, advances in « on-road » vehicles have made their suspension as adjustable as many full scale race cars, today. Toy-grade RC cars[edit] Radio controlled vehicle toy 1:24 Range Rover Sport replica developed by Rastar with hidden antenna. Toy-grade RC cars are typically manufactured with a focus on design coupled with reducing production costs. Where as a hobby-grade car has separate electronic components that are individually replaceable if they fail, toy grade cars are typically made with cheaper components that are harder to find as spare parts, and a single electronic circuit board integrated into the design of the vehicle. Although hobby-grade enthusiasts may look down on toy-grade RC cars, their maintenance is much easier than that of the hobby-grade models since number of components is drastically smaller, and parts can be harvested at almost no cost from any RC toy car of the similar size. Performance is generally much less than hobby-grade cars, but can be upgraded by adding hobby-grade parts. Stock toy-grade cars are equipped with weaker motors and are powered by alkaline or NiCad batteries which means their top speed is usually only 5–15 mph (8–24 km/h). Cheaper ones lack any form of a suspension and the ones that do feature a suspension have very primitive or rudimentary designs. Steering is typically not proportional (with only three positions: straight, full left, and full right) and there is typically no proportional « throttle » either, with stopped and full power usually being the only options. Most toy-grade cars are primarily marketed toward children, although some older enthusiasts enjoy tinkering with them and improving them. Many toy-grade cars also have highly detailed scale body shells, which are often adapted for use on hobby-grade vehicles to give them a more scale appearance. Hobby-grade radio control models[edit] In recent years, hobby-grade « ready-to-run » (or « RTR ») models have become readily available from major manufacturers of radio-controlled cars, attracting many hobbyists who would otherwise not have purchased a kit car. Vehicles of this type need little or no final assembly and in most cases, the bodies are shipped painted and trimmed. Safety inspection of the product to ensure correct operation is essential, as injury to operators or bystanders from disassembling vehicles is possible. A number of cars and trucks are presently available only in ready-to-run form. The growing popularity of the RTR vehicle has prompted many manufacturers to discontinue production of kit vehicles. High-spec racing vehicles are generally still available or sold only as kits, and companies like Thunder Tiger, Losi, HPI, Traxxas and Tamiya sell kit and RTR versions with the benefits of a kit version being in upgraded parts or lower costs, respectively. Hobby grade vehicles can cost much more, ranging from $90 to over $2000. Ready-to-run. As the name suggests, are pre-assembled models ready for immediate use. They reach to speeds of about 80 miles per hour (130 km/h), with some modified versions capable of reaching 95 miles per hour (153 km/h).[2] There are versions that run on both batteries and nitro. Kit. Kit vehicles are sold as a box of individual parts, and must be assembled before driving. Although they require more skill to get running than an RTR vehicle, a relatively easy kit (such as those from Tamiya) is a good way to learn more about working on RC cars. Many kits are very easily modified with a wide variety of available parts. There are also « ARTR » or Almost Ready To Run models, which come mostly assembled but require a small amount of extra work before running.[3] Electric models[edit] A yellow RC Camaro SS Electrically powered models utilize mechanical or electronic speed control units to adjust the amount of power delivered to the electric motor. The power delivered is proportional to the amount of throttle called for by the transmitter – the more you pull the trigger, the faster it goes. The voltage is « pulsed » using transistors to produce varying output with smooth transitions and greater efficiency. Electronic speed controllers use solid state components to regulate duty cycle, adjusting the power delivered to the electrical motor. In addition, most electronic speed controllers can use the electric motor as a magnetic brake, offering better control of the model than is possible with a mechanical speed control. Mechanical speed controllers use a network of resistors and switch between them by rotating a head with an electrode around a plate that has electrical contacts. Mechanical speed controllers are prone to being slow to react because they are actuated by servos, waste energy in the form of heat from the resistors, commonly become dirty and perform intermittently, and lack a dedicated braking ability. They appear only in vintage RC models, and are now essentially obsolete. Most electric cars up to recently used brushed motors but now many people are turning to brushless motors for their higher power output and because they require much less maintenance. They are rated either in relative turns or Kv. The Kv number tells how many RPM the motor will turn per volt. However, the ability of the system to put out power is dependent on the quality of the batteries used, wires and connectors supplying power. Due to their power, brushless motors are also used in bigger monster trucks and 1/8 nitro-powered buggies that have been converted to electric. High quality brushless systems can be much more powerful than nitro and can accomplish feats such as standing backflips when installed in a monster truck, most notably the HPI Savage Flux. Some 1/5 scale gas to electric conversions are in production but are uncommon due to high price. A new (2012) form of electric r/c racing is MAGracing. Small 1/32 scale cars and powered by rechargeable batteries and steering and speed are controlled by r/c. Extra steering guidance is provided by steel wires hidden in the track surface enabling more accurate steering than is attainable with free running r/c cars. Tracks can therefore be much narrower and smaller making the system suitable for ‘in home’ racing. Cars can be driven back onto the track after an ‘off’, using reverse if necessary, so that track marshals are not required. Nitro powered models[edit] A Traxxas T-Maxx nitro powered off-road monster truck without body. Nitromethane nitro powered models utilize a single servo for throttle and braking control; rotation of the servo in one direction will cause the throttle on the carburetor to open, providing more air and fuel mixture to the internal combustion engine. Rotation of the servo in the other direction causes torque to be applied to a linkage and cam which causes friction with the braking material. The brake is commonly located on the driveshaft or spur gear in some cases and applies stopping power only to the driven wheels. Some models will also use an additional servo to control a transmission box, enabling the vehicle to drive in reverse. Fuel engine sizes most often range between 0.12–0.35 cubic inches (2.0–5.7 cm3). This is due to restrictions by the main sanctioning bodies for radio-controlled racing. Many « outlaw » engines are manufactured larger than these, mainly intended for vehicles which will not be used in sanctioned races and therefore do not need to comply with these regulations. Engine size is related to the class of car; 1/10 scale on and off-road vehicles usually are equipped with .12–.18 cubic inch engines, with 1/8 scale vehicles using .21–.32 cubic inch engines. There are exceptions, with many Schumacher and Thunder Tiger/Team Associated RC models being good examples of unusually large engines coming as standard equipment on certain models. An Ofna Hyper 8 Pro 1:8-scale nitro-powered racing buggy. Fuel-powered engines allow model cars to reach moderate speeds unmodified. Maximum power is generally achieved at medium to high speeds, and a slightly slower throttle response than electrically powered vehicles is to be expected due to clutching and lack of torque. Electric motors effectively produce instantaneous torque, whereas nitro engines, like full-sized gasoline engines, take time for the engine to spool up and for the clutch to engage. Nitro- (and fuel) powered cars may be refueled and returned to action in a few seconds, as opposed to electrics which require removal of the body shell and battery fasteners to replace a discharged battery. Nitro cars are cooled some by air, some by the oil mixed in with the fuel and may be run continuously with no need to take breaks for cooling down assuming they are properly tuned. Nitro-powered cars operate like full-sized fuel vehicles more than their electric counterparts do, making use of a two stroke engine rather than an electric motor. The sound of the engine noise is a main selling points to nitro enthusiasts, even though brushless electric equivalents are generally faster and do not require special fuel. However, their exhaust contains unburned oil, which usually ends up coating the chassis. This, in turn, requires more cleaning than an electric-powered equivalent. Cleaning is usually achieved by the use of compressed air nozzles and solvents (such as denatured alcohol). Tuning a fuel-powered vehicle requires learning to maintain optimum performance and fuel economy, and to minimize engine wear and overheating, even in ready-to-run vehicles. Running a nitro-fuel motor without tuning or tuning improperly can hurt performance in rich conditions, and cause severe damage in lean conditions. Traxxas Nitro Sport Because of their ability to be driven for longer periods of time and the use of burning fuel, mechanical wear in nitro vehicles is generally greater than in electric vehicles. In addition, the increased weight of fuel-powered vehicles generally lead to higher speed collisions, causing greater damage to the collided vehicles, and a greater degree of safety concerns needs to be taken into account. Maintenance such as cleaning of the air filter and general chassis cleaning, replacement of worn clutch parts, proper after-run lubrication (necessary for storage) and maintenance of other motor-related items such as glow plug replacement makes for a more frustrating experience for first time RC users. In addition, nitro motors typically require rebuilding or replacement after 2–8 gallons (7–30 liters) of fuel run through them, due to loss of compression, which can be accelerated by poor tuning and overheating. It is also possible to seriously damage the engines by over-revving them with no load or ingestion of dirt into the carburetor. As such, nitro-powered vehicles are by nature expensive to maintain. Gasoline-powered models[edit] Gasoline-powered vehicles, also known as « fuelies » or « gassers », run on a mix of gasoline and oil. They cost much more (usually $800–$3000 RTR) than nitro and electric cars. They are also much bigger, usually scale 1/6 or 1/5 usually referred to as Large Scale, and therefore require much more space to run. They do not usually have as high top-end speeds (compared to nitro and some electrics) but have much power and do not require much fuel to run. Over time the cost of a gas-powered car can be less than some nitro-powered vehicles, because of the high cost of nitro fuel and buying new nitro engines to replace worn-out ones. In addition, gas-powered motors rarely if ever require tuning and have a very long lifespan. These gas-powered vehicles really pertain to the individual who is more interested in scale than imagination. These large scale models have been popular in Europe for over a decade with brands like FG Modelsport, MCD, Elcon, N-R-P and have become popular in the US thanks to companies like HPI Racing and Losi producing affordable high quality models locally. In Europe there are sanctioned EFRA races that compete both in on-road cars as well as off-road cars to determine National Champions as well as European Champions, in the US ROAR has yet not picked up these as official classes. Accessories and Upgrades[edit] Most RC models generally require the purchase of additional accessories. For electrical vehicles, battery packs and a suitable charger are needed to power the car and are seldom included. A soldering iron and supplies are often necessary to build high-performance battery packs or install upgraded electronics with low-resistance connectors. A Li-Polymer battery with a hard case is popular for RC cars, with the most common voltages being 7.4 V or 11.1 V. LiPo batteries are known to be explosive if mistreated, so some enthusiasts still use NiMH batteries instead, which are less powerful but safer. For nitro-powered vehicles, a glow plug heater and fuel are needed to start the engine, as well as 4 AA size batteries, or a rechargeable six-volt, five-cell battery pack to power the on board electronics. Nitro vehicles also require a means of cranking the engine over, which can be achieved using a pull-start, starter box, battery operated rotostart, or by an electric drill. The Traxxas nitro rc cars come with a hand start up system, that revs the engine and starts it up. It doesn’t require a pull start system. Relatively expensive model fuel, spare glow-plugs, and after-run oil are also needed. Gasoline-powered vehicles require only a receiver battery pack and a means to start the engine, usually the included pull-start. Hobby-grade vehicles almost always require 8 AA size batteries to power the transmitter, though some can use rechargeable transmitter pack or simply rechargeable AAs. A large industry of aftermarket manufacturers produce upgrade or hop-up parts for hobby-grade cars. Upgrades range from mere improvements to the longevity of R/C car parts, to all-out performance enhancements. Some hobbyists create their own upgrades for sale via classifieds and online forums. Hobbyists choose to upgrade hobby-grade cars from plastic stock parts to aluminium parts to increase strength and the steering angle of the car. Principle of operation[edit] Main article: Radio control A Traxxas Electric Rustler – A Rear Wheel Drive Stadium Truck (without body). Radio-controlled cars use a common set of components for their control and operation. All cars require a transmitter, which has the joysticks for control, or in pistol grip form, a trigger for throttle and a wheel for turning, and a receiver which sits inside the car. The receiver changes the radio signal broadcast from the transmitter into suitable electrical control signals for the other components of the control system. Most radio systems utilize amplitude modulation for the radio signal and encode the control positions with pulse-width modulation. Upgraded radio systems are available that use the more robust frequency modulation and pulse code modulation. Recently however, 2.4 GHz frequency radios have become the standard for hobby-grade R/C cars. The radio is wired up to either electronic speed controls or servomechanisms (shortened to « servo » in common usage) which perform actions such as throttle control, braking, steering, and on some cars, engaging either forward or reverse gears. Electronic speed controls and servos are commanded by the receiver through pulse width modulation; pulse duration sets either the amount of current that an electronic speed control allows to flow into the electric motor or sets the angle of the servo. On these models the servo is attached to at least the steering mechanism; rotation of the servo is mechanically changed into a force which steers the wheels on the model, generally through adjustable turnbuckle linkages. Servo savers are integrated into all steering linkages and some nitro throttle linkages. A servo saver is a flexible link between the servo and its linkage that protects the servo’s internal gears from damage during impacts or stress. History[edit] On-road racing model on a carpet surface track. A 1:8 four-wheel drive off-road racing buggy in action Early commercial products[edit] Several early commercially viable RC cars were available by mid-1966, produced by the Italian company El-Gi (Elettronica Giocattoli) from Reggio Emilia. Their first model, a 1:12 Ferrari 250LM was available in the UK in December 1966, through importers Motor Books and Accessories, St. Martins, London, and early in 1967 through Atkinson’s model shop in Swansea. This model was followed by El-Gi’s 1:10 Ferrari P4, first shown at the Milan Toy Fair in early 1968. R/C cars became possible around this time solely because of the development of ‘proportional’ radio control. Previously all radio was of the ‘bang/bang’ variety, i.e. steering was either left, center, or right and speed was either stop or go. This was usable for aircraft or boats but not for cars. In the mid-late 1960s a British company, Mardave, based in Leicester, began to produce commercially viable RC Cars. Their first cars were nitro- or gas-powered cars sold in the local area in the early 1970s. In the early 1970s several commercial products were created by small firms in the US. Most of these companies began as slot car companies and with the wane in popularity of that genre moved into the R/C field. Among these were Associated Electrics, Thorp, Dynamic, Taurus, Delta, and Scorpion. These early brubs were 1/8 scale nitro-powered (then called gas) aluminum flat pan cars powered by a .21 or smaller engine. The bodies for these cars were made of polycarbonate (the most popular made of Lexan). The most popular engine was the K&B Veco McCoy. The primary sanctioning body for races for these cars was Remotely Operated Auto Racers (ROAR). In 1973-74, Jerobee, a company based in Washington State, created their 1/12 nitro car using a Cox .049 engine. Over 54,000 were sold « Ready to Run » W/Radio control system of which 25K were made by EK Product od Texas and the balance by JoMac when they bought the company from Rocket Research Corp. Several aftermarket companies created parts for this car including clear Lexan bodies, heat sinks, and larger fuel tanks. This scale evolved into 1/12 scale electric racing when Associated Electrics created the RC12E in 1976-77. Jerobee became Jomac and created their own electric kit called the Lightning 2000 that won the « ROAR » National Championships in 1981& 82 for 6-Cell Modified and 82 the 6-Cell Production classes. The Lightning 2000 was designed by Don McKay and Jon Congdon. By the late 1970s, interests in 1/12 scale electric racing began to grow as 1/8 scale IC racers, the sole racing category at the time, needing to race throughout the winter as an alternative to their impractical IC cars began to race 1/12 cars, therefore a winter national series was developed. As a result, the series grew into popularity as a large number of scratchbuilt cars started to appear in these meetings. Again, electric r/c cars were enabled by one revolutionary development, that of the nicad rechargeable battery. Prior to the mid-1970s, batteries were either heavy lead acid or expensive throw away dry cells. In 1976, the Japanese firm Tamiya, which was renowned for their intricately detailed plastic model kits, released a series of elegant and highly detailed, but mechanically simple electric on-road car models that were sold as « suitable for radio control ». Although rather expensive to purchase, the kits and radio systems sold rapidly. Tamiya soon began to produce more purpose-built remote-controlled model cars, and were the first to release off-road buggies featuring real suspension systems. It was this progression toward the off-road class that brought about much of the hobby’s popularity, as it meant radio-controlled cars were no longer restricted to bitumen and smooth surfaces, but could be driven virtually anywhere. The first true Tamiya off-road vehicles were the Sand Scorcher and the Rough Rider, both released in 1979, and both based on realistic dune buggy designs. Tamiya continued to produce off-road vehicles in increasing numbers, featuring working suspensions, more powerful motors, textured off-road rubber tires and various stylized « dune buggy » bodies. They also produced trucks, such as the Toyota HiLux Pickup, that featured realistic three-speed gearboxes and leaf-spring suspension systems. All of these models were realistic, durable, easy to assemble, capable of being modified, and simple to repair. They were so popular that they could be credited with launching a boom in radio-controlled model cars in the early to mid 1980s, and provided the basis for today’s radio-controlled car market. Popular Tamiya models included the Grasshopper and the Hornet dune buggies as well as the Blackfoot and Clodbuster monster truck models. The earliest Tamiya models, particularly the early off roaders, are now highly sought after by vintage R/C collectors and can fetch prices of up to US$3000 on internet auction sites if still in mint, unbuilt form. Acknowledging their continued popularity, several of the early kits have even been re-released by Tamiya during 2005–2007, with a few alterations. A British firm, Schumacher Racing, was the first to develop an adjustable ball differential in 1980, which allowed nearly infinite tuning for various track conditions. At the time the majority of on-road cars had a solid axle, while off-road cars generally had a gear-type differential. Team Associated followed suit with the introduction of the RC100 1/8 scale gas on-road car, RC12 1/12 scale on-road electric car, and RC10 1/10 scale off-road electric racing buggy in 1984 (see below). Team Losi followed with the introduction of the JRX2 in 1988. Modern developments in radio controlled racing[edit] The successful RC Racing car, ‘Schumacher S.S.T.2000’ The image shows the car without body kit or battery pack installed to allow for a clearer view. In 1984, Associated Electrics, Inc. of Costa Mesa, California introduced the RC10 off-road electric racer; this model was a departure from ‘Associated Electrics’ regular line of nitromethane-powered on-road race cars. Designed as a high-grade radio controlled car, the chassis of the RC10 buggy was manufactured from anodised, aircraft-grade aluminium alloy. The shock absorbers were machined, oil-filled and completely tuneable; they were also produced from the same aluminium alloy. Suspension control arms were manufactured from high-impact nylon, as were the three-piece wheels. Optional metal shielded ball bearings were sometimes incorporated in RC10 wheels and transmissions. The RC10 transmission contained an innovative differential featuring hardened steel rings pressed against balls – which made it almost infinitely adjustable for any track condition. The RC10 quickly became the dominant model in electric off-road racing. In 1986, Schumacher Racing Products released their CAT (Competition All Terrain) vehicle, widely considered the best four wheel drive off-road « buggy » racer of the time. The CAT went on to win the 1987 off-road world championship. This car is credited for sparking an interest in four-wheel-drive electric off-road racing. Gil Losi Jr., whose family ran the « Ranch Pit Shop R/C » racetrack in Pomona, California, turned his college studies toward engineering, primarily in the field of injection molded plastics, leading to his foundation of Team Losi. When the JRX-2, the first Team Losi buggy, was released, it initiated a rivalry with Team Associated that continues to this day. Team Losi went on to secure a number of achievements, which included the industry’s first all-natural rubber tires, the first American-made four-wheel-drive racing buggy, and an entirely new class of cars, the 1/18-scale Mini-T off-road electrics. Although Losi and Associated seemed to dominate much of the American market, Traxxas, (another American company, famous for the T-MAXX and the REVO 3.3), and Kyosho (from Japan), were also making competitive two-wheel-drive off-road racing models.[4] Although Losi and Associated were close rivals in the US, Schumacher off-road models continued to be popular amongst European hobbyists. Electric and nitro cars have come a long way in terms of power. Electric cars have gone from non-rebuildable brushed motors and NiCad batteries to brushless motors and LiPo. Nitro cars have gone from small engines to huge .36-.80 engines that are used in big monster trucks. Telemetry in RC racing[edit] In the last few years one-way telemetry system has also been applied in RC racing car to get information by car’s sensors like Engine RPM Motor RPM Voltage Engine Temperature Motor Temperature The telemetry system is usually integrated in car’s receiver then transmit to the controller.

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