Yezdi Roadking

Last updated
Yezdi Roadking
Manufacturer Ideal Jawa
Also calledRoadking
Production1978-1996
PredecessorYezdi Oilking
Class Standard Motorcycle
Engine 250 cc (15 cu in) Air-cooled, 2-stroke, single cylinder, dual exhaust
Ignition type Contact Breaker (until 1992), Electronic CDI (1993-1996)
Transmission 4-speed
Suspension Front: Telescopic - Hydraulic Travel - 130 mm, Rear: Hydraulic Shock Absorbers Travel - 100 mm
Brakes Front 160 mm Twin Cam double leading shoe
Rear 160 mm Single Cam Single leading shoe
Tyres Tyres 3.25 x 16 x 4 ply (front & rear), Rims :1.86 x 16 (front & rear)
Wheelbase 1,350 mm (53.1 in)
DimensionsL: 2,000 mm (78.7 in)
W: 750 mm (29.5 in)
H: 1,100 mm (43.3 in)
Weight134 kg (dry)
144 kg (wet)
Fuel capacity16 L (3.5 imp gal; 4.2 US gal)
RelatedYezdi Oilking, Yezdi Monarch

The Yezdi Roadking was a motorcycle produced in India by Ideal Jawa Ltd, Mysore from 1978 to 1996. [1] It was based on the CZ 250 motocross (type 980.5) ridden by Jaroslav Falta to the runner-up spot in the 1974 motocross world championship. It was sold under the brand name Yezdi. The bike won several Indian rallies and road races. The bike had a 250 cc engine with dual exhausts and a semi-automatic clutch and Jawa/CZ's trademark integrated gear shifter/kick-starter. [2]

Contents

Origins

The Yezdi Roadking was the successor of the short-lived Yezdi Oilking. [3] The Oilking was the first motorcycle in India to attempt to move away from pre-mixed fuel to a separate oil lube system via an oil pump. The box-like shape on the left hand cover housed the oil pump. Unfortunately this system had a very high failure rate resulting in piston seizures. This resulted in the discontinuation of the Oilking and the birth of the Roadking. The Roadking though, still retained the protuberance on the left engine cover that housed the oil pump in the Oilking. The Yezdi Roadking was based on the 1974 CZ 250 Falta, where the original bore and stroke of 70 mm × 64 mm (2.76 in × 2.52 in) was retained, but detuned for lower power than its Motocross original. The engine block is smaller than and different from the Yezdi Classic/Model B in appearance. Also the CZ original had a "Porcupine" cylinder head, which was used only in the initial models; the cylinder head later reverted to regular straight fin design. The cylinder block (Type 980.5) was from CZ. Just like in the older Jawa 353 Kyvacka and the Yezdi Model B, the Roadking also came with an original Tesla (Czechoslovakian) headlight bulb as standard.

Frame

The frame is a single frame of motocross origin and was built out of square tube. The fork was more pronounced with a higher rake angle and came with adjustable shock absorbers. Rims were 16 inches. The motocross and ice racing origin frame and proper weight balance made handling very easy and agile compared to its rivals in India.

Engine

The cylinder block was carried over from the CZ 250 motocross, which had an over-square stroke ratio. Carburetors were either Jikov (tickler choke) or Pacco, wherein the former was exclusively for the Roadking while the latter was used for the Classic D250 model. The spark plugs were cold and the bike also featured a semi-automatic clutch, where a mechanism by the name cam and roller connected to the clutch push rod to engage/disengage the clutch which is unique to this and other Yezdi/Jawa models. The cam and roller is mechanically coupled to the gear selector thereby eliminating the need for a hand-clutch while engaging the gears. The motorcycle featured dual exhaust ports with dual silencers akin to most Jawa motorcycles, but unlike the CZ 250 on which it was based, which featured a single exhaust port. Another unique feature of the bike was that the kick-starter and the gear shared the same shaft as with all Jawa/CZ/Yezdi motorcycles. Once the gear rod is reversed it doubles as a kicker and once started it automatically returns to the original position.

Models

CB unit models

An early Yezdi Roadking CB Unit Model Yezdi Roadking India.jpg
An early Yezdi Roadking CB Unit Model

The bike was silently launched in India in the late 1970s by Ideal Jawa. It had a prominent fuel tank and was finished in signature Jawa maroon and sometimes in black and gold pinstripe, priced slightly higher than the Classic and CL II models. The troublesome contact breaker ignition was replaced in 1993 with an electronic CDI unit. Until 1989, Roadkings had a provision for adjusting the front fork dampers.

Oilking

Yezdi OilKing Yezdi Oilking.jpg
Yezdi OilKing

During the late 1970s, another model known as Oil King was also launched which featured an oil pump for the 2T mix with petrol but later production ceased due to rampant issues with fuel pump failure. The prominent protrusion on the left hand side gearbox housing was the original location of the pump. Though the model was discontinued, the engine casing found its way into the Roadking and hence all Roadkings have this protrusion even though the oil pump is not included.

CDI unit models

In 1993, in an effort to increase fuel efficiency and to solve starting problems the CB or contact breaker ignition units were replaced with CDI electronic ignition units. The livery was also changed. Fuel efficiency was increased by 30%, however the motorcycle's competitors were getting better and with rising fuel prices the sales plummeted until finally it ceased operations in 1996.

Monarch

Yezdi Monarch Yezdi Monarch.jpg
Yezdi Monarch

At the 1996 Auto Expo, Yezdi displayed a model which used the Yezdi 350 Twin frame & fuel tank, and the Roadking engine. The rims were 18 inch as opposed to the regular 16 inch. However, it sold only in few numbers. Although some attribute its low sales volume to the company's need to get rid of the surplus Yezdi 350 frames that remained in the factory after the Twin was discontinued.

Indian Motorsports

In road races at Sholavaram, the Roadking ran in its own 250 cc class, while in the Indian open class category its main rival was Royal Enfield Bullet and later the much more powerful Rajdoot 350. Power was usually increased to 25+ bhp or beyond for Group E categories where the engine was bored up till 300 cc and over-engineered in stock trim. Among prominent racers were C.K. Chinnappa and Somender Singh. In rallies, N. Jagadeeswara Reddy won many rallies until 1980. Then racing couple Jagat and Anita Nanjappa and Thirumal Roy won several victories before switching to the Rajdoot Yamaha RD350. During the early 1990s FMSCI, the sporting federation of India banned two-wheelers above 120 cc from rallies thus ending the Roadking's run in motor sports.

Powergliders

The Roadking engines were a favorite among the hang-glider manufacturers in India. A Coimbatore based manufacturer headed by late motor racing driver and constructor, S. Karivardhan manufactured and exported several Power gliders using Roadking engines with modified aluminum heads, K & N filters and sleeved bore.

Further developments

As a result of power glider efforts, during 1996 Somender Singh, a former Ideal Jawa road and rally racer developed a more refined engine, made from aluminium as opposed to the usual cast-iron, with increased power and fuel efficiency which was featured in Car & Bike magazine. The design was never put into production even though it ended up with Ideal Jawa.

These motorcycles were also used by various police forces around the world, examples being Guatemala, Sri Lanka, Egypt, Turkey etc.

Related Research Articles

<span class="mw-page-title-main">KTM</span> Austrian motorcycle and sports car manufacturer

KTM is an Austrian motorcycle, bicycle and motorsports brand which traces its foundation in 1934 as Kronreif & Trunkenpolz Mattighofen. Today, Pierer Mobility AG operates as the manufacturer of KTM branded motorcycles; whereas KTM Fahrrad AG operates as the manufacturer of KTM branded bicycles.

<span class="mw-page-title-main">Velocette</span> English motorcycle manufacturer, 1904–1971

Velocette is a line of motorcycles made by Veloce Ltd, in Hall Green, Birmingham, England. One of several motorcycle manufacturers in Birmingham, Velocette was a small, family-owned firm, selling almost as many hand-built motorcycles during its lifetime as the mass-produced machines of the giant BSA and Norton concerns. Renowned for the quality of its products, the company was "always in the picture" in international motorcycle racing from the mid-1920s until the 1950s, culminating in two World Championship titles and its legendary and still-unbeaten 24 hours at over 100 mph (161 km/h) record. Veloce, while small, was a great technical innovator and many of its patented designs are commonplace on motorcycles today, including the positive-stop foot shift and swinging arm rear suspension with hydraulic dampers. The business suffered a gradual commercial decline during the late 1960s, eventually closing in February 1971.

<span class="mw-page-title-main">Yamaha FJ</span> Type of motorcycle

The Yamaha FJ1100 and FJ1200 are sport touring motorcycles that were produced by Yamaha between 1984 and 1996.

<span class="mw-page-title-main">Jawa Moto</span> Czech motorcycle & machinery company

JAWA is a motorcycle and moped manufacturer founded in Prague, Czechoslovakia in 1929 by František Janeček, who bought the motorcycle division of Wanderer. The name JAWA was established by concatenating the first letters of Janeček and Wanderer. In the past, especially in the 1950s, JAWA was one of the top motorcycle manufacturers and exported its 350 model to over 120 countries. The best known model was the 350 Pérák, and in the 1970s the 350 Californian. It appeared in typical black and red coloring from the US to New Zealand. After 1990 a significant loss of production occurred. A successor company was formed in 1997 in Týnec nad Sázavou, continuing the name as JAWA Moto.

<span class="mw-page-title-main">Honda Express</span> Type of motorcycle

The Honda Express or Honda NC50 is a scooter made by Honda between 1977 and 1983. Variants include the Express (NC50), Express II (NA50), Express SR (NX50) and Urban Express (NU50). All versions of the Express line are powered by an air-cooled 49 cc (3.0 cu in) two-stroke engine.

<span class="mw-page-title-main">Yamaha DT200</span>

The Yamaha DT200 is a dual-purpose motorcycle manufactured during the 1980s, 1990s, and continues into the 2000s (decade) by the Yamaha Motor Company. Though never imported into the US, the rest of the world, including Canada, received some of these models. The DT200LC began production in 1983bc. It also was very similar to the DT125LC. This model continued production until 1988.Then, in 1989 a totally new model was introduced, DT200R (3ET), as well as a similar DT125R. In Canada, the DT125LC/R was never imported.

<span class="mw-page-title-main">Ducati L-twin engine</span>

The L-twin is a naturally aspirated two-cylinder petrol engine by Ducati. It uses a 90-degree layout and 270-degree firing order and is mounted with one cylinder horizontal.

<span class="mw-page-title-main">Yamaha WR450F</span> Type of motorcycle

The Yamaha WR450F is an off-road motorcycle made by Yamaha Motor Company. It currently has a 450 cc (27 cu in) liquid-cooled single-cylinder engine. First offered in 1998 at 400cc, it shared many components and design concepts with the YZ400F motocross model. It is basically the racing YZ450F detuned slightly for more controllable power, with a headlight and lighting coil, softer suspension, a kickstand, lower noise specifications, larger radiators and lower emissions. The WR in the name indicates a wide-ratio gear box common to most enduro or trail bikes and stands in contrast to the close-ratio gearbox essential to a motocross racer. Over the years the WR has benefited from the advances made in the YZ motocross version gaining displacement and advancements such as an aluminum frame and improved suspension. Over much of its life the weight of the WR450F has remained fairly constant ranging from 244 to 249 pounds dry weight.

<span class="mw-page-title-main">Beta (motorcycle manufacturer)</span>

Beta is an Italian motorcycle manufacturer, specialising in off-road motorcycles. Beta is best known for their popular observed trials bikes. In 2005, they launched a range of enduro motorcycles using KTM engines. In 2010 they launched the new RR series, with a new engine made in-house. Beta motorcycles have been used by world trials champions such as Jordi Tarrés, Dougie Lampkin, Albert Cabestany and Enduro riders Steve Holcombe and Brad Freeman. Production in 2018 was expected to be in excess of 20,000 motorcycles, ranging in size from 50 cc to 480 cc.

<span class="mw-page-title-main">Yamaha YZ450F</span> Type of motorcycle

The Yamaha YZ450F is a four-stroke racing motocross bike built by Yamaha Motor Corporation. It was the successor to the previous YZ426F which was discontinued in 2003. It is credited by Cycle World and Dirt Rider magazines as the bike that started the four-stroke dirt bike revolution. The 2006 YZ250F and YZ450F were the first production motorcycles equipped with titanium suspension springs.

<span class="mw-page-title-main">Ideal Jawa</span> Indian motorcycle company (1960–1996)

Ideal Jawa (India) Ltd was an Indian motorcycle company based in Mysore, which sold licensed Jawa motorcycles beginning in 1960 under the brand name Jawa and from 1973 as Yezdi. The catchphrase for the bikes sold by the firm was "'Forever Bike, Forever Value". Jawa motorcycles were introduced in India in 1960 and they have a cult following to this present day. Production was carried out directly in India by Ideal Jawa India Ltd based out of Mysore. The Yezdi factory was located at Yadavagiri along the railway line which heads to Mysore Junction. The factory was inaugurated by the then Governor of Mysore State, Sri Jayachamaraja Wadiyar, Maharaja of Mysore in 1961.

Motorcycle components and systems for a motorcycle are engineered, manufactured, and assembled in order to produce motorcycle models with the desired performance, aesthetics, and cost. The key components of modern motorcycles are presented below.

<span class="mw-page-title-main">Yamaha RD500LC</span> Type of motorcycle

The Yamaha RD500LC is a high-performance, two-stroke sports motorcycle, also known as the RZ500 in Canada and Australia. A lightened but detuned version known as the RZV500R was developed for the Japanese home market. Strict United States Environmental Protection Agency regulations meant that the RZ500 was not available for sale in that country. Produced for a short period between 1984 and 1986 it has become a sought after collector's machine.

<span class="mw-page-title-main">Yamaha FZ750</span> Japanese motorcycle produced 1985 to 1991

The Yamaha FZ750 is a sports motorcycle produced by Yamaha Motor Corporation between 1985 and 1991. The FZ750 is notable for several reasons, perhaps the most radical being the 5-valve cylinder head with a radial arrangement. This became something of a Yamaha trademark. The FZ750 would be the first bike in the Genesis design concept.

<span class="mw-page-title-main">Royal Enfield Bullet</span> Motorcycle

The Royal Enfield Bullet was initially an overhead valve, single-cylinder, four-stroke motorcycle made by Royal Enfield in Redditch, Worcestershire, now produced by Royal Enfield (India) at Chennai, Tamil Nadu, India. A company originally founded by Madras Motors to build Royal Enfield motorcycles under the licence of India. The Royal Enfield Bullet has the longest and unchanged production run of any motorcycle having remained continuously in production since 1948. The Bullet marque is even older and has passed 75 years of continuous production. The Royal Enfield and Bullet names were derived from the British company which had been a subcontractor to the Royal Small Arms Factory in Enfield, London.

<span class="mw-page-title-main">BSA C15</span> British, 250 cc single cylinder motorcycle, produced by BSA in the 1960s

The BSA C15 was a 250 cc single-cylinder ohv motorcycle manufactured by the British company BSA from September 1958 until 1967, and was BSA's first four-stroke unit-construction bike. For most of that period, after the introduction of 'Learner Laws' in 1961, a 250 cc was the largest capacity solo machine that a learner could ride unaccompanied when displaying L-plates in the United Kingdom. A road-going Sports derivative was added in 1961, and off-road versions, for Trials and Scrambles, were also available in the range.

<span class="mw-page-title-main">Jawa 350</span> Motorcycle model

The Jawa 350 is a motorcycle, produced by Jawa Moto in Czechoslovakia since the 1930s until 1992 and in the Czech Republic until present. In the 1950s, with its two-stroke, air-cooled 343 cc engine it could reach speeds of 132 kilometres per hour (82 mph) and was exported into over 120 countries of the world.

<span class="mw-page-title-main">KTM 300</span> Series of off-road motorcycles made by KTM

The KTM 300 is a series of 2-stroke enduro / off-road motorcycles made by KTM. They are the Penton-inspired 1984 300 GS, the 300 DMX, the dirt only 300 MXC, European road legal 300 EXC and the US 300 XC (close-ratio), 300 XC-W and 300 SX (Motocross) versions. The KTM 300 is designed for difficult off-road conditions. The 300 EXC and the 300 XC-W have a small headlight, speedometer, tail-light and somewhat softer linkless PDS suspension. Starting in 2008 all 300's came with electric start. Since the early 2000s KTM has been offering the XC-W model in a special "Six-Days" or "ERZBERGRODEO" limited edition.

<span class="mw-page-title-main">Suzuki A100</span> Japanese motorcycle made beginning 1966

The Suzuki A100 is a Japanese motorcycle from the Suzuki Motor Corporation with production starting in 1966.Similar models were produced by Yamaha and Kawasaki with the YB100 & KH100 models, also with a single-cylinder two-stroke engine and rotary valve being examples.

<span class="mw-page-title-main">Ducati 450 R/T</span> SOHC motorcycle by Ducati

The Ducati 450 R/T (road/trail) is a 436 cc (26.6 cu in) single cylinder bevel drive desmodromic SOHC motorcycle produced by the Italian manufacturer Ducati from 1971 to 1974. Initially produced at the request of the American importers Berliner Motor Corporation as a motocross / enduro motorcycle offered exclusively to the American market, and only a few hundred machines were made of this type. It is the only off-road racing motorcycle to use desmodromic valves. An optional street equipment kit was available. From 1972 it was produced for the European Market as a street legal on/off road machine, which was sometimes known as the 450 T/S.

References

  1. "STAR OF MYSORE A NOBLE MAN FARROKH K. IRANI". iconsofindianbusiness.com. Retrieved 2024-02-07.
  2. Benipal, Zagrav (2020-02-22). "Return of the classics". www.tribuneindia.com. Retrieved 2024-02-07.{{cite web}}: CS1 maint: url-status (link)
  3. "Ideal Jawa Yezdi RoadKing price, specs, mileage, colours, photos and reviews". Bikes4Sale. Retrieved 2024-02-07.