Experiencing "Behind the wheel" "IZH-Planet-Sport". This promising name in advance promised a meeting with a motorcycle that combines the reliability and simplicity of the road "Planet" with completely new qualities - agility and lightness inherent in purely sports motorcycles. The study of the technical characteristics confirmed these expectations: the power of the single-cylinder engine is higher by as much as 14 forces, and the weight is 23 kilograms less. The long-awaited acquaintance took place under somewhat unusual circumstances. A program was being prepared on Central Television, and it was necessary to show the latest examples of motor vehicles. For this program, a motorcycle was sent from Izhevsk (as well as from other cities). We saw him - and fell in love at first sight. Why wait for spring and then go to Izhevsk, drive the car from there, if it is already here? This thought seemed reasonable to everyone. With the consent of the management of the plant, the editorial board of "Za Rulem" received it immediately after the telecast. It is clear that it was not specially prepared for us. The motorcycle was in the most "ordinary" version, moreover, without a separate lubrication system. But just this made it possible to compare it later with a car equipped with such a system. The first meeting took place on January 13th. The day was frosty, about fifteen degrees, with a wind. Freed from packaging and preservation, the motorcycle stood in the snow and seemed like a Christmas tree toy, only very large. Its slender and austere outlines, skillfully selected proportions, bright yellow color of the gas tank and side box lids in combination with chrome rims, mud guards, and polished engine surfaces left an impression of harmony and unity of composition. But this pleasant impression was not the main thing. We were really worried about starting the engine - after all, the motorcycle spent the whole night on the street. And from the letters we knew: many complained about a difficult start. And at first the fear seemed to be confirmed. The motorcycle "sneezed" once or twice and fell silent. An inverted plug (A7.5US) was wet. Then we decided to put a "hotter" candle - A8U. After that, the engine started on the first try. With this candle one of us drove about 600 kilometers in winter. She never refused, the motorcycle started up equally willingly in any weather (of course, there was a copper gasket under the head, which reduced the compression ratio during the running-in period). The motorcycle accelerated vigorously, leaving JAVA behind. The maximum speed allowed by the factory for the first run-in period - 90 km / h - with this plug was achieved and maintained painlessly. I must say that on other candles - the Czechoslovak PAL 14-7 and 14-8, the German BOSH-225, the engine started up just as confidently and easily. But on the colder ones (that is, with a large glowing number) - BOSH-265 and the English candle "Champion-5", with which we experimented, there were misfires - they were sometimes "thrown". On a warm engine, these candles worked perfectly in all ranges. Winter driving is not the greatest pleasure. But it sometimes allows interesting observations to be made. Once - it was at the end of February - in the afternoon plentiful sleet fell. And by the end of the day it began to freeze. Ice appeared on Moscow streets. And we had to drive about 20 kilometers. More than once or twice during this road, when cornering and when braking at traffic lights, it seemed that a motorcycle was about to be “scorched” into powder. And yet, the suspension, loaded by the driver, the passage iromi with 20 kilograms of luggage, "did not flow", "did not break through" even once. But the muffler got pretty bad. However, troubles with him began earlier. Although it is suspended from the frame at the rear on rubber bushings, vibrations did not spare him: in the second thousand kilometers, the nut turned away, the bolt was lost. I had to replace them. At the fourth thousand, this story repeated itself. At the fifth thousand, it was decided to clean the acoustic filter of the muffler. But it turned out to be not so easy to take it out - it burned tightly. I had to unscrew the nuts, remove the liner cap and drive along the shaky road "IzhPLANETASPORT" The crew will slip. " But he was confident on the road. When it was time for clean, dry roads, the stability of the motorcycle was no longer surprising. We are accustomed to the fact that it can be "laid" on the asphalt as you like - it is always manageable and stable. This can be explained not only by the sufficient rigidity of the frame and wide swingarm, but also by the good suspension. The front fork travel is large enough, and it never "pushed" all the way. The same can be said for the rear shock absorbers. However, passengers make an amendment to their overall assessment: they could be softer. The design of the shock absorbers is successful, they are easy to disassemble, they are quite simple and effective, they are easily adjusted for the required load - you just need to turn the lever to one of three fixed positions. The operation of the entire suspension as a whole was tested in a variety of conditions: on good asphalt, and on cobblestones, and on a country road. She passed a difficult exam when the motorcycle's mileage approached eight thousand. It so happened that we drove about 350 kilometers on a broken dirt road, in places covered with large rubble (almost boulders), in some places. The appearance of a new motorcycle model always arouses interest. And if, moreover, this model means a milestone in the domestic motorcycle industry, then such an interest is all the more understandable and justified. And we were not at all surprised when, immediately after entering the IZH-Planetysport roads (it was described in No. 1 of the magazine for 1974 and No. 9 for 1975), numerous letters began to come to the editorial office. To respond to such emails, we conduct tests for which the factories provide us with machines. Let's make a reservation right away: editorial tests do not duplicate factory tests, but are aimed at evaluating the motorcycle from the point of view of an ordinary consumer, whose requests emerge from readers' letters. Here we will tell you how the new Izhevsk motorcycle went through trial operation. A few kilometers - the insert separated from the muffler, it was removed. The factory instruction advises cleaning after 9 thousand kilometers. We think this figure should be reduced, at least for the convenience of the operation. The huge cigar of the muffler, as already mentioned, got the most on the Kazan-Izhevsk road. She touched large stones, hooked the end of the edges of the pits, scratched the road at bends. And there is nothing to say about the hook of the central stand, pressed from the bottom to the muffler - in the end it was simply bent back. Of course, such an ingenious case is easy to manufacture. But it's not for nothing that the car has the word "sport" in its name. And that low-slung, straight and thick muffler limits her options. Even just a country road becomes undesirable for the car. And there is nothing to say about the real rough terrain. Probably, in the new versions of IZH-PS it is worth raising the rear part of the muffler. Technology is technology, but there is also a need (by the way, as far as we know, designers are already developing a new muffler) .:. "; We started the story about the editorial IZH-PS with the chassis. To finish with this topic, it remains to say a few words about the brakes, wheels and the rear chain. Brakes have always caused us admiration. The rear brake is soft, elastic. The front brake is very strong. and sharper. To this you have to get used to, the Wheels in general did not cause any comments. We tightened the spokes no more often than on other motorcycles. But the open chain is already a serious question. On this occasion, almost everyone who wrote to the editorial office about “Planetsport.” More often than not, the statements boiled down to one thing: an open chain is bad, this is a step back. Significant mileage on dusty roads - the chain adjustment reserve was already exhausted by eight thousand. In general, this is a large mileage for motorcycles of this type, and it would suit the owners of IZH-PS if chains could always be bought in a store. But that's another topic. When at the beginning we said that IZH-Planeta-Sport marks a milestone in its field, we meant two major innovations: this serial motorcycle uses a 12-volt electrical system (instead of a 6-volt one) and a separate lubrication system. Talk about separate lubrication next time. In the meantime, about electrical equipment. The transition to 12 volts has been brewing for a long time, We are not inclined to be so categorical. Of course, a closed chain is more durable. Of course, it requires less maintenance. But this is essentially where its advantages end. Getting rid of bulky casings, rubber covers and their pipes on the engine, the designers significantly gain in weight, which is very important on machines of this type. In addition, a more powerful engine wears out the chain incomparably faster, and you need to constantly and very carefully monitor its tension. And this is easier to do if the circuit is open. The instructions say that you need to control the tension every 500 kilometers. Let us confirm from ourselves - this is not an exaggeration. One of us missed only once and paid immediately: the chain came off. It's good that the speed was not great, everything ended well. iK by the way, the same instruction advises to boil the chain in graphite grease after 3000 kilometers. This should also be heeded. With proper care and use on good roads, the chain will last around 10,000 kilometers. In our case, it is a very dynamic driving in the city, winter operation has now become simply necessary. With the increased speed and traffic intensity, the lighting technology of road motorcycles lagged far behind the requirements of the day. But even their weak headlights and half-blind taillights at night after 2-3 hours "pumped out" the battery, and the generator power was so low that it could not "feed" even one headlight ... 100 watt alternator. It feeds the battery through the rectifier. And together they more than supply energy to a 45-watt high beam lamp, a powerful taillight, and direction indicators, an ignition, and a few more lamps. Only a motorcyclist can appreciate what a relief it is to drive on a well-lit road at night instead of sneaking into the dark. I remember that a long steep descent began, we were driving with low beam. A well-defined beam illuminated the roadside well. When we turned on the high beam, a bright white spot fell on the opposite slope and outlined the road to the smallest detail. It was not only pleasant, it reduced many times the danger when driving at night. For 8 thousand kilometers, only one defect was found in the electrical equipment: the screen installed in front of the lamp fell off. He fell on the reflector and pretty much spoiled it, while we figured out why the light was different and what rattles in the headlight. Let's note one design flaw: the new, central switch (ignition lock) is even more accessible to dashing people than even the old Izhevsk one. This is serious, because the motorcycle is not equipped with any anti-theft devices, and even if the prudent owner of the car decided to disconnect the battery, remove the fuse, nothing would have changed. After all, the battery compartment is closed with a lid, which is pressed by the most ordinary lamb. We have one of the lambs lost on the move from vibration. I had to replace it with an ordinary screw. And since we are talking about this, we recall: you need to follow the fasteners on the machine in both directions. Among the letters with which we had to get acquainted, there were quite a few of those whose authors claimed: the motorcycle is not at all adapted for long-distance tourist trips: it is impossible to install a trunk on it (the rear lamp interferes), a wind shield. Well, reasonable comments. A motorcycle is a companion of youth, a "synonym" for long-distance roads. And on a long journey you cannot do without luggage. We tried to equip our motorcycle with both a shield and a trunk. Both were done in haste, before the road. But a practical test showed that the trunk fulfills its functions. By the way, on the roads we also met "sports planets" with purchased, slightly altered luggage racks. The windscreen protects well against wind, dust and rain. Already the first trips showed that this dramatically reduces fatigue - because now the oncoming air flow does not press on the driver. And this is good for the engine - one can judge how it works by its noise (before they were not heard). In conclusion, I would like to answer one more question that often occurs in letters: why shouldn't a sidecar be used with such a powerful motorcycle? One of us had a chance to visit the Izhevsk machine-building plant to go through the workshops where Planetusport is made. He saw how a frame is welded from individual elements, how it is straightened in special conductors. But the most important thing is that he saw how this frame, rigidly fixed in the device, was sent to the oven and subjected to heat treatment, hardened. If before that it was obvious that the design of the frame itself, as lightweight as possible, was not designed for operation with a side trailer, then after visiting the plant it became clear that I thought it was impossible to weld any brackets to it, as the instructions say. The last, most serious question remains - about the engine. But that is the topic of the next article. B. DEMCHENKO, master of sports, E. KONOP, engineer, L. OVSIEVICH, engineer Photo by L. Ovsievich

In the Soviet Union, motorcycles of their own production were especially in demand and were popular, so some factories produced several models that later became legends. Izh Planet Sport is considered one of them.

The model was positioned as a Soviet sports motorcycle with excellent technical characteristics. While the USSR was conquering the Czech motorcycle production, Izh Planeta Sport was gaining momentum, becoming an excellent competitor to Java. This sports horse was produced from 1873 to 1984, and during this time the Izhmash plant produced more than one thousand models that have survived to this day.

Pros:

• one of the fastest Soviet motorcycles;
• stylish appearance;
• light weight;
• comfortable stand;
• versatile and comfortable fit.

Minuses:

• will not fit as the first motorcycle;
• has a lot of noise;
• push-pull system
• there are problems with the front brake.

Specifications Izh Planet Sport

During the entire production period, the manufacturer tried to make the motorcycle as good as possible, so it was regularly upgraded. Thus, the characteristics of the Izh Planet Sport motorcycle are all different, but the main parts have remained unchanged.

The main length of the motorcycle was 207 cm, the width, depending on the modification, was from 79 to 81 cm, and the height was the same everywhere - 91 cm. The motorcycle received an excellent engine, which sometimes gives excellent dynamic data. With only 1 cylinder and 2-stroke operation, Planet Sport will be able to deliver a maximum speed of up to 140 km per hour. Agree, the "Sport" prefix in the model is just the way, given this speed. If you drive on the highway. Average fuel consumption is 3.5 liters per 100 km, when driving in the city, the figure can increase to 7 liters. The motor has three-channel blowing, which is a very good feature for a similar model. The main modifications of the motorcycle were equipped with a 350 cubic centimeters engine, but it was also possible to see a 500 cubic meter sports planet.

With quality yet simple brakes and quality rubber, the bike has an excellent stopping distance. At a speed of 60 km / h, the planet will stop after 16 meters, while driving at a speed of 30 km / h, this distance will be reduced to 7 meters.

Review and history of Izh Planet Sport

Already in the first years of production, Izh gained incredible popularity, the motorcycle was universal and could be operated both on a city road and on long journeys not only on the highway, but also off-road. Even today, this model is considered one of the best among Izha, hundreds of copies are still in use. Many people will be interested in the history of the motorcycle, and it is worth noting that when the model was released, the compatriots had a slight shock, because in the presence of motorcycles at that time, this was the fastest. It so happened that the external design of the planet sport was not the same as its brothers, the designers took samples from Japanese motorcycles of the 60s, such as the Yamaha 350R5 or Kawasaki A1 Samurai.

tuning Izh Planet Sport

Soon, the great popularity of Izh Planet Sport forced the Izhmash plant to start exporting to other countries, and as a result, the motorcycle was used in the Netherlands, Finland and the UK. Even there, he was able to seriously compete with imported well-known brands. The initial price of a motorcycle in the Soviet Union started at 1,050 rubles, but the manufacturer soon rounded it up to 1,000. Of course, in those days it was a lot of money, but this did not stop people, they wanted this sports "bike".

As for the more detailed technical characteristics of the model, the manufacturer made a real breakthrough in the production of motorcycles in the USSR. If you see the letter "M" in the Planet number, your iron horse has the function of separate lubrication of the motor, and this is a unique invention. But it is worth noting that this function is only present in 1974 models.

Engine Izh Planet Sport

As you know, the Izhmash plant produced other models of the planet, but all of them had weak characteristics at that time. Planet Sport became the most powerful planet at that time, having received 349 cc. volume and 32 horses. The only part taken from foreigners was the Mikuni carburetor, which belonged to Japanese engineers. Soon they took more electrical equipment and optics from them. As a result, with such not weak characteristics and a weight of 135 kg, the planet received 237 hp. for 1 ton of weight. The result was excellent dynamic performance - the motorcycle developed 100 km / h in just 11 seconds. Soon, the new modifications were significantly changed, the manufacturer decided to abandon imported elements, and installed a Soviet speedometer and electrical equipment. There was also a modification with a K-62M carburetor of its own production, but with it the motorcycle produced only 28 hp.

Appearance Izh Planet Sport

In the photo you can see that in appearance the motorcycle was completely unique and did not have basic similarities with other Izhmash models. Planet Sport was more like its Japanese competitors, but still had a number of distinctive characteristics. For example, in the photo Izh Planet Sport you can see a huge 14-liter fuel tank with a special design. Like most models of the time, the planet received a large round headlight and a solid seat.

In those days, the motorcycle had several unofficial names, including "Dog" and "Sportak". If you see a similar model in excellent condition today, you should know that it is a great rarity and the price of the planet today can reach 1,000 dollars.

Video Izh Planet Sport

Ever since Soviet times, the Izh Planet Sport motorcycle has been deservedly considered one of the most unique not only in the country, but also in the world. Let's take a closer look at some of its features.

The history of the motorcycle IZH Planet Sport

In the period from 1974 to 1985, the Izhevsk plant produced the model " Planet Sport 350". Both in its structure and design, it was very different from previous motorcycle models, being a medium-class vehicle. The main category of people that the creators of the Sport 350 were guided by were tourists and simply leisure lovers, since the high cross-country ability of the motorcycle allowed it easily pass on a variety of road surfaces.

The exterior design of the motorcycle was also quite unusual. It is impossible not to note its clear similarity with motorcycles made in Japan. times of the sixties. Due to all its obvious advantages and technical component, in certain years IZH motorcycles were supplied to a number of socialist countries, where it was able to compete with such well-known manufacturers as Java and MZ.

From June to September 1975, the first five hundred experimental models were released, which were then sold at a price of 1200 rubles. After their success in the automotive market, mass production was established and until the end of 1985 the Izh Planet motorcycle was tightly held on the assembly line. The Izh Planet Sport motorcycle fell in love with most of the population of our country, but the very first models were most appreciated. After many years of operation, their cost could increase significantly.

As for the main technical components, the Izh Planet motorcycle distinguished itself here. Its parts were practically unique, since other Izh motorcycle models had completely different parts. The Sport model was the first to use a separate lubrication system for the engine. The engine was equipped with a Japanese Mikuni carburetor, thanks to which such a high power was achieved.

Technical characteristics of the motorcycle Izh

• Engine displacement: 340 cm3
• Piston diameter: 76mm
• Power: 6700 rpm (32 hp)
• Dry weight of motorcycle: 135 kg
• Power-to-weight ratio: 237 hp / ton
• Acceleration to 100 km / h in 11 seconds

As you can see, the characteristics of the Izh Sport motorcycle, especially for its time, were incredibly high. For the first released the batch used Japanese electrical equipment of the Denso brand. It was in view of the installation of such equipment that requirements of a completely different level began to be imposed on Soviet machine building.

In addition, the first batch had a 3.0 by 19 front wheel. The power of subsequent models produced was reduced to 28 horsepower, since Soviet-made carburetors had a smaller diffuser.

Recent changes in the history of Izh Planet Sport

1979 made some, not the best, changes in the creation of motorcycles. Manufacturers sought to completely get rid of foreign parts and parts that were of higher quality than domestically produced parts. The price of spare parts for motorcycles has been reduced accordingly.

Already in April 1975, on the basis of the Planet Sport, so popular and loved by people, the production of new models was launched:

• sports Izh M-15
• cross Izh-K-15

"Dog" - this is the nickname Soviet motorcyclists awarded Planet Sport. It was popular and in demand over the years, thanks to which it was repeatedly subjected to engine tuning. The Psa cylinder was sharpened, as a rule, under the CheZet or M-412 Moskvich piston.

This was the way Planet Sport 500 was born. It can be called a truly great work of art by the Soviet tuners.

Video: Izh Planet Sport motorcycle review

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IZH Planet Sport - a road bike of the middle class, designed for tourist and sports trips on roads with different surfaces, alone or with a passenger. Produced by the Izhevsk Machine-Building Plant from 1974 to 1985.

The motorcycle was very unlike its brothers, both externally and in design. Externally, the Izh-PS was very similar to Japanese motorcycles of the mid-60s (for example, Suzuki T250 Super Six 1966, Yamaha 350R5 1970, Kawasaki A1 Samurai 1966). Due to the high technical level of design and workmanship, Izh Planet Sport were exported to many socialist countries, where they successfully competed with Java and MZ motorcycles. Although the serial production of the motorcycle began in 1974, the first 500 motorcycles were sold in the USSR from June to September 1975, at the time of the start of production the motorcycle cost about 1200 rubles. The motorcycle lasted on the assembly line until 1985, after which it was discontinued. Among Soviet motorcyclists, the Izh-PS of the first years of production were most highly valued, which were expensive even at the age of ten.

The technical "stuffing" (with the exception of little things) was completely original and significantly differed from other IZH models. For the first time in the USSR, a separate engine lubrication system was used. The engine with a working volume of 340 cm³ (piston diameter - 76 mm) was equipped with a Japanese Mikuni carburetor, which allowed it to develop 32 hp. at 6700 rpm. Thus, the "loner" with a dry weight of 135 kg had a specific power of 237 hp / ton (insanely popular in the USSR Jawa-350/634 had a specific power of 141 hp / ton). Thanks to this, the motorcycle had high dynamic qualities - the acceleration time to 100 km / h did not exceed 11 seconds. The engine was secured to the frame with rubber cushions, a technical innovation of the period. The first batches of Planet Sport were equipped with Japanese Denso electrical equipment, thanks to which, for the first time on a Soviet motorcycle, the UNECE requirements for lighting technology were met. The front wheel was different in size 3.0x19.

Later releases of "Planet Sport" were equipped with a domestic K-62M carburetor with a smaller diffuser diameter, due to which the maximum power dropped to 28 hp. They can be distinguished from the early Japanese by their longer rear wing and slightly curved exhaust pipe, which was originally straight. By 1979, Planet Sport gradually got rid of imported components, deteriorating the quality of the main parts.
On the basis of "Planet-Sport" in April 1975, the production of sports motorcycles for the multi-day enduro "Izh M-15" and the cross modification "Izh-K-15" began.
Soviet motorcyclists gave the IZH Planet Sport motorcycle the nicknames "Dog" (from the abbreviated IZH PS), "Sportak". Due to the unusually high quality, it was said that Planet-Sport was intended for export to the USA.
It was on this motorcycle that many were engaged in the most real motor "tuning" - they bored the cylinder under the M-412 piston or under the piston group of the cross 500-cc "Chesetta". The power increased by one and a half times, but the resource was reduced to one season (the standard IZH-Planet Sport could withstand 50-60 thousand kilometers without noticeable wear of the main components).

Technical characteristics:
General data (in brackets - data for versions since 1979)
Motorcycle base 1350 (1390) mm
Length 2050 (2070) mm
Width 730 (810) mm
Height 1100 (1150) mm
Ground clearance 145 (135) mm
Dry weight 135 (145) kg
Maximum speed 140 (130) km / h
Fuel consumption:
at a speed of 60 km / h 3.5 l / 100 km
at a speed of 100 km / h 6.5 l / 100 km
Acceleration time to 100 km / h 11 sec
Braking distance at a speed of 60 km / h 12 m
Cruising range of about 400 km

Engine:
Engine type two-stroke, with three-channel purge
Number of cylinders 1
Cylinder diameter 76 mm
Piston stroke 75 mm
Displacement 340 cc
Compression ratio 9.5-10.5 (8.7-9.2)
Rated engine power at 5600-6700 rpm 32 (28) hp
Engine torque at 5200-5800 rpm
Separate lubrication system (together with fuel 1:25)
Cooling system with oncoming air flow
Supply system
Air filter dry, with paper element
Carburetor "Mikuni" (K-62M)
Cone diameter 32 mm
Productivity of the main jet 190 cc / min

Transmission:
Primary transmission by helical gears
Multi-plate clutch in oil bath
Transmission four-speed
Foot gear shifting
Reverse gear open, sleeve-roller chain
Gear ratio of a primary gear 2.18
Reverse gear ratio 2.47
Gearbox ratios:
1st gear 3.17
2nd gear 1.81
III gears 1.26
IV gear 1.0

Chassis:
The frame is tubular, welded, closed, heat-treated (!)
Front suspension rodless telescopic fork
Suspension travel 155 mm
Rear suspension pendulum
Suspension travel 90 mm
Tire sizes:
front wheel 3.00-19 ″
rear wheel 3.50-18 ″
Shoe brakes
Brake drum diameter:
front wheel 190 mm
rear wheel 170 mm

Electrical equipment:
On-board network voltage 12 V
Generator IZH GP-1, three-phase, alternating current
Generator voltage 14 V
Generator power 100 W
Accumulator battery 6MTS-9
Voltage regulator IZH RN-1 (BPV 14-10)
Spark plug A-23

Refueling tanks and fuels and lubricants:
Fuel tank 14 l, AI-93 gasoline
Oil tank 1.5 l, oil MS-20

The appearance in 1974 of the Izh Planet Sport motorcycle on the domestic market became a sensation. Fans of motorcycles had the opportunity to purchase a Soviet motorcycle, which in its characteristics is comparable to imported cars of this class. At that time, it could well be put on a par with such models as the Yamaha 350 R5 or Kawasaki A1 Samurai.

The high technical characteristics of the Izh Planet Sport 350 allowed it to successfully compete with the products of Czech motorcycle specialists, various modifications of Jawa and CZ. But the domestic industry turned out to be ill-prepared for the production of products requiring a high technological culture.

Despite all the efforts of the staff of the Izhevsk Motorcycle Plant, their brainchild retained many childhood illnesses, and in 1984 it was removed from the assembly line under the pretext of low profitability.

The history of Izh Planet Sport is a clear example of the fact that the creation of any technically complex product is inextricably linked with the technological capabilities of the industry and the level of training of production personnel. But, despite a number of existing design flaws, the model produced in the amount of 215,210 pieces left a deep mark in the hearts of those who like to race on good asphalt on two wheels.

Specifications Izh Planet Sport

For 1974, the bike looked very modern. Painted in a bright orange color, which became the trademark for cars of this family, it stood out in the stream and was the envy of many Soviet citizens who had a driving license of category "A". But it was not only about the beautiful style. The technical characteristics declared for Izh Planet Sport were also matched to the design. In 1974 they looked like this:

• Dimensions (length / width / height) mm - 2070/790/1150.
• The wheelbase is 1390 mm.
• Operational ground clearance - 135 mm.
• Weight (dry) - 135 kg.
• The engine is a single-cylinder, two-stroke, with three channels and five purge ports.
• Engine displacement - 340 cc cm.
• Cylinder diameter and the piston stroke is 76 × 75 mm.
• Rated power - 32 l. from. at 6700 rpm min and compression ratio 10.5: 1.
• Lubrication supply - separate.
• Cooling - air.
• Combustible mixture formation system - carburetor, with an inlet diameter of 32 mm.
• On-board network - 12 V.
• Brakes - drum, with a front drum diameter of 190 mm and a rear drum - 170 mm.
• Transmission - four-speed, with a foot switch. There is a reverse gear.
• Maximum declared speed - 140 km / h.

Speaking about the history of the creation of the bike, it should be noted that the chief designer of the project, Vasily Ivanovich Panov, developing the new Izh Sport 350, used technical solutions that proved to be good on sports motorcycles created together with MAMI specialists:

• Engine with separate lubrication system,thanks to which the units of the power unit withstood high loads, and fuel consumption in economy mode was reduced to 4.5 liters per 100 km.
• Closed framefrom a tubular profile, heat-treated after weld seams.
• Shock absorbing rubber pads, on which the power unit was attached to the frame. This reduces vibrations and increases operating comfort.
• Suspension of modern design. The front wheel has a telescopic fork. Rear wheel suspension - pendulum type.

The technical characteristics obtained on Izh Planet Sport 350 were achieved, not least thanks to the careful fitting of parts. Due to the lack of the necessary technology, this adjustment sometimes had to be done manually.

Features of design and production

The domestic industry was not able to provide the manufacturer with components of the required quality, and their supplies from abroad went with great creak. For several batches of machines of early years of production, it was possible to break through the purchase of foreign-made components. The lucky ones who purchased Izh Planet Sport in 1974 - 1976 received cars at their disposal, equipped with:

• Japanese electronic and electrical components.
• Headlight optics from Pannonia or Hella, and for countries with left-hand traffic - Lucas.
• Spark plugs PAL or Magneti-Marelli.
• Accumulators of foreign production.

All this allowed not only to improve the parameters of the machine, but also to provide a high culture of weight. As already noted, the early modifications of the Izh Planet Sport had a weight of only 135 kg, and the power-to-weight ratio was 237 liters. from. for 1 ton. For comparison, the same figure for the JAWA 350/634 reached only 141 liters. from.

As a result, the model of the Izhevsk plant accelerated to hundreds of less than 11 seconds, and the real maximum speed of the Izh Planet Sport was significantly higher than the 140 km / h indicated in the passport. Despite the impressive dynamic qualities and the prefix "sport" in the name, the new generation Izh Planet was a road bike.

Its landing made it possible to travel long distances, withstanding the hardships of the Russian off-road. True, there was an unpleasant drawback. When the rider was too light, the front fork would flutter when accelerating at high speeds. With a sufficient weight of the rider or if there was a passenger behind him, this effect was not observed.

Differences by year of release

Changes were constantly made to the design of the motorcycle. Some were associated with the desire to improve technology. Others were prompted by demands from industry leaders to reduce production costs. To raise the price of Izh Planet Sport 350 above 1000 rubles was not allowed by the prices set for competitors' products.

For example, JAWA 350/634 cost 1080 rubles, and CZ-350 - 980 rubles. For clarity of the picture, we indicate the main changes, dividing them by year:

• 1975 year. The front fork was lengthened by 2.5 mm by changing the size of the corrugations installed on it by the upper crosshead. Instead of a cylinder head with fan-shaped fins, the Izh Planet Sport engine receives a HZ with more familiar, linearly arranged cooling fins. The switches and a number of electrical components, although imported, were from another manufacturer. The Mikuni AEX carburetor was gradually replaced by the Mikuni VM32-89 carburetor. The spoke thickness was increased (from 3.5 to 4 mm) and the wall thickness of the front brake drum.
• 1976 year. Instead of foreign-made headlights, they use domestic, FG137. The situation is similar with the speedometer. If earlier the motorcycle was equipped with a part from Pannonia T5, now it is being replaced by the domestic modification of the SP-102. Shock absorbers are no longer fitted with upper covers. The end of the muffler pipe is folded up. The design and fins of the cylinder are slightly modified.
• 1977 year. The motorcycle is fully equipped with domestic outdoor lighting devices. The shape of the hind wing changes. The design of the crankcase is being changed. Specifically, the attachment points, since the power unit begins to be rigidly attached to the frame, abandoning the shock-absorbing rubber bushings. The new air filter now takes up the entire seat space, which is why the voltage regulator relay is moved under the fuel tank. The main characteristics of Izh Sport remain the same.
• 1978 year. The Mikuni carburetor gives way to the domestic K62M model. Of the imported electrics, only Japanese turn signals remain. An anti-theft lock appears.
• 1979 year. Replacing the SP102 speedometer with SP102A and Japanese turn signals with domestic ones (only for the domestic market). The pendulum is lengthened by 480 mm. Accordingly, the base of the motorcycle increases (up to 1440 mm) and its overall length (up to 2150 mm). The weight of Izh Sport also increases, reaching 155 kg in this modification.
• 1980 year. The cable and speedometer gearbox are made not for the blade, as before, but for the square. The design of the intake is slightly changed. On the lids of the toolboxes now flaunt not stickers, but aluminum nameplates.

During the production process, the Izh Planet Sport motorcycle has undergone such a significant number of changes that this could not but affect its characteristics. Installing a domestically produced carburetor led to a tangible deterioration in the technical characteristics of the engine. Power dropped from 32 to 28 hp. from.

With the adjustments made to the design, there are also inconsistencies in the sources that answer the question of how much Izh Planet Sport weighs. Indicators of dry weight range from 135 to 155 kg. There is nothing surprising in the fact that fans of two-wheeled vehicles especially appreciate cars of the first years of production.

They are better manufactured and equipped, and have higher dynamic characteristics. Towards the end of production in the passport of Izh Planet Sport, the speed was indicated not 140, but only 135 km / h. Fuel consumption has increased.

Engine Izh Planet Sport

The design of the power unit was very progressive for its time and made it possible to obtain high power (32 hp) from a working volume of 340 cubic meters. see. Its main features include:

• Cylinder, with sleeve made of special cast iron and jacketed in aluminum alloy. It was attached to the crankcase with four pins.
• Cylinder head with chamber combustion of a hemispherical shape. A candle and a decompressor were screwed into the HZ, simplifying the starting process.
• Three-channel purge system, which improved the filling of the cylinder with the working mixture.
• Non-separable crankshaftsupported by two roller (# 2505) and one ball (# 304) bearing.
• Needle bearings in the upper head of the connecting rod.
• Separate feed engine oil that entered the intake tract from a separate reservoir. The pump, driven by the crankshaft, is responsible for the pressure in the lubrication system.

Obviously, the developers of Izh Planet Sport paid special attention to the engine design and its maintainability, realizing how important the technical characteristics of the power unit are for a car of this class. Nevertheless, more than thirty years after the end of production, the owners of motorcycles of this model have certain problems.

Repair dimensions of the piston Izh Planet Sport

If today the legendary motorcycle gets to the new owner in unsatisfactory condition, it will not be easy to repair it. The greatest number of questions is raised on Izh Planet Sport engine repair. Initially, the resource of the power unit was small and amounted to about 30 thousand km. mileage.

True, the manufacturer has provided for the possibility of cylinder bore. Initially, the engine was equipped with pistons with three marking options and some difference in size.

Taking into account the cylinder bore for the overhaul size, overhaul pistons were produced:

Today, it is extremely difficult to acquire a piston of overhaul dimensions. Even new piston rings are in short supply. A possible way out of the situation is the installation of compression rings of the VAZ-2101 engine. We have to adjust them to the size of the piston and cut out semicircular notches at the joint of the lock for the fixing pin.

Tuning Izh Planet Sport

Changes to the design of a motorcycle are impractical for a number of reasons:

1. Resource of many nodes and the aggregates are small. For this reason, it is almost impossible to improve their performance without causing damage.
2. Refurbished to original states of Izh Planeta Sport 350 are valued significantly higher than its tuned versions.

Nevertheless, if you want, you can do something. Many athletes participating in cross-country or circuit races have modified the Izh Planet Sport engine, making various changes to its design. A frequently asked question is how many cubes can you increase the volume of the motor.

Tuning (boosting) the engine

While forcing the engine, the masters of sports teams reworked a lot, starting with the connecting rod and piston group, and ending with the exhaust system. The maximum that could be obtained by pressing the sleeve from the CZ 500 and using the piston coming with it in a pair is four hundred and a little cubic centimeters of the working volume.

But such a boost to the Izh Planet Sport engine requires serious professional skills and sophisticated equipment. The thin walls of a standard cast-iron sleeve pressed into an aluminum cylinder do not allow the engine to be bored up to 500 cubic meters.

The exhaust system is unable to cope with the increased volume of exhaust gases, and the thrust bearings are unable to cope with increased loads. All the talk that there was a factory version of the Izh Planet Sport 500 cubes is nothing more than a fairy tale. But cylinder bore isn't the only way to add power and agility to your bike.

DIY tuning

Installing a new carburetor is a proven way to improve the performance of the Izh Sport without making significant design changes. Over the years, Mikuni has released many new, more and more advanced models with a 32 mm diffuser.

Engine tuning can be done in other ways without affecting its mechanical components. The launch and stable operation of single-cylinder motors have always presented certain problems that can be solved by installing an electronic ignition on the Izh Planet Sport. Such kits are produced by several manufacturers at once, and their installation does not take much time.

Using BKSZ from power units of other modifications, one should be very careful. When mounting the ignition from the Minsk motorcycle to the Izh Planet Sport, one must remember that the crankshafts of the motors of these cars rotate in opposite directions. The wires from the coil to ground and the switch will have to be reversed. This redesign of the engine is quite justified.

How to set up the ignition of Izh Planet Sport

High-quality sparking improves the combustion of the combustible mixture, increasing power and reducing fuel consumption. That is why ignition adjustments must be carried out with great care. If the Izh Planet Sport engine was not modified, you can be guided by the data specified in the operating instructions:

• Distance between open breaker contacts - 0.35 - 0.55 mm.
• The gap between the contacts on the spark plug is 0.6 - 0.8 mm.
• The piston is not adjusted up to TDC by 2.5 - 4.2 mm. The 2.8 mm indicator is considered optimal for a new or recently moved motor.

By installing the ignition on Izh Planeta Sport in accordance with the specified parameters, you will achieve stable engine operation in all main modes.

Any other design changes should be made with utmost care. Within the framework of the technologies used in the development and production of Izh Sport, the technical characteristics of the car have almost reached their limit, and it is so easy to break the delicate balance.

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