IZH Planet 2 - technical specifications, description of the motorcycle

Russian motorcyclesIZH motorcycles

More than forty years have passed since the release of the last IZH Planet 2, and motorcycles of this model are still cruising the roads of the former USSR.

Moreover, they are well preserved and are in great demand, especially among creative restoration or tuning enthusiasts and motorcycle fans.

The average road bike, called Planet 2, was produced for six years (1965 - 1971).

Over the years, just under 250 thousand copies were produced .

The second generation of the Planet family was intended for driving on a variety of roads.

The car gained particular popularity among domestic hunters, mushroom pickers, fishermen, as well as residents of rural areas, since it was difficult to find an alternative.

Design and reliability

IZH Planet 2, as evidenced by the number in the model name, became the second motorcycle in the Izhevsk Planet series.

It differs from the “ancestor” of the family in greater comfort and power of the power unit , as well as an updated, more modern (for that period of time) design.

Thus, Planet 2 received a signature paint job, a muffler and wheel rims covered with decorative chrome, a polished crankcase cover, as well as brake covers and a carburetor casing with a layer of hammer enamel.

The motorcycle seat has become wider and more comfortable. Its finishing is made of colored textinite.

The second generation model is designed in such a way that its repair does not require special or specific tools , conditions or equipment.

The mechanics are quite simple and straightforward , and spare parts are produced in abundance.

IZh Planet 2 owes its excellent cross-country characteristics to good traction at low speeds, high suspension and competent gearbox design.

Among other things, the owners of the bike unanimously declare the highest reliability of the engine and its amazing durability. This is confirmed by the manufacturer, who provided a warranty for a mileage of 15 thousand kilometers or a year and a half of operation.

Tuning options

This motorcycle provides great opportunities for modifications. As a rule, tuning an Izh motorcycle concerns the following components:

• Engine;
• Ignition;
• Gear box;
• External tuning.

In general, Izh Planet 4 12 volts is quite simple. This allows even less experienced craftsmen to remake it. First, you need to determine what you want to get in the end. In many cases, modifications are made to all components of the motorcycle. But, this is quite labor-intensive.

It is often easier to simply rework one or two nodes that will give you the desired effect. The most popular is engine tuning. Also, in many cases, owners change the equipment visually, making it almost unrecognizable.

Planet 2 and Jupiter 2

The appearance of the representatives of the second generation of the Jupiter and Planet families, produced by the Izhevsk Machine-Building Enterprise, is almost identical .
The main difference between these motorcycles is the design of the power units.

So, the Planet 2 engine has one cylinder, while the Jupiter 2 engine is equipped with two.

The crew parts of both vehicles are unified. One-piece (welded) tubular frames are similar, but the motor mounting points are different, so the motors of the models cannot be swapped.

The Jupiter frame in the front part is equipped with a bracket for a stroller, which the Planet does not have.

Both motorcycles marked “2” are equipped with new designs of bearings and protective seals , as well as economical “K-36Zh” carburetors.

For each model, the manufacturer included additional spare parts in the form of a tire pressure gauge and a spare clutch cable.

The average person could distinguish Jupiter 2 from Planet 2 by the emblem on the gas tank of each model.

The Honda X 11 is the first bike to combine sporting and touring characteristics.

Seeing this wonderful motorcycle for the first time, it is difficult to remain indifferent to its appearance:

Differences by year of production

Changes were constantly made to the design of the motorcycle. Some were associated with the desire to improve technology. Others were caused by demands from industry management to reduce production costs. Raising 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. To make the picture clearer, we will indicate the main changes, dividing them by year:

• 1975 The front fork was lengthened by 2.5 mm, changing the size of the corrugations installed on it and the upper yoke. Instead of a cylinder head with fan fins, the Izh Planet Sport engine receives a GC with more conventional, linearly arranged cooling fins. Switches and a number of electrical components, although they remained imported, were from another manufacturer. The Mikuni AEX carburetor was gradually replaced by the Mikuni VM32-89 carburetor. The thickness of the spokes was increased (from 3.5 to 4 mm) and the wall thickness of the front brake drum.
• 1976 Instead of foreign-made headlights, they use domestic ones, FG137. The situation is similar with the speedometer. If previously the motorcycle was equipped with a part from Pannonia T5, now it is being replaced by the domestic modification SP-102. Shock absorbers no longer have top covers. The end of the muffler pipe is bent upward. The design and fins of the cylinder are slightly changed.
• 1977 The motorcycle is fully equipped with domestic outdoor lighting devices. The shape of the rear wing changes. The design of the engine crankcase is changing. Specifically, the mounting points, since the power unit begins to be rigidly attached to the frame, abandoning the shock-absorbing rubber bushings. The new type air filter now occupies the entire seat space, which is why the voltage regulator relay is moved under the fuel tank. The main characteristics of Izh Sport remain at the same level.
• 1978 The Mikuni carburetor gives way to the domestic model K62M. Of the imported electrics, only Japanese turn signals remain. An anti-theft lock appears.
• 1979 Replacement of the SP102 speedometer with SP102A and Japanese turn signals with domestic ones (only for the domestic market). The pendulum is extended 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 the Izh Sport also increases, reaching 155 kg in this modification.
• 1980 The speedometer cable and gearbox are made not to fit a blade, as before, but to fit a square. The intake design is slightly modified. The lids of tool boxes now feature aluminum nameplates rather than stickers.

During the production process, the Izh Planet Sport motorcycle underwent such a significant number of changes that this could not but affect its characteristics. The installation of a domestically produced carburetor led to a noticeable deterioration in the technical characteristics of the engine. Power decreased from 32 to 28 hp. With.

The adjustments made to the design are also associated with discrepancies in the sources answering the question of how much the Izh Planet Sport weighs. Dry mass indicators range from 135 to 155 kg. It is not surprising that fans of two-wheeled vehicles especially value cars from the first years of production.

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

Specifications

The middle class of the IZH Planet 2 model is confirmed by both the engine characteristics and the overall dimensions of the bike, which are:

• Length - 213.0 cm;
• Width - 78.0 cm;
• Height - 102.5 cm;
• Base - 143.0 cm;
• Ground clearance - 13.5 cm.

The dry weight of the motorcycle is 155 kilograms, and the wheel size is 3.25-19.

Design features

At one time, IZH Planet 2 had very modern parameters.

The “heart” of the motorcycle was a two-stroke single-cylinder 346 cc air-cooled engine , the power of which reached 15 horsepower (4.2-4.6 thousand rpm).

This unit runs on a fuel mixture of gasoline and oil, which comes by gravity from an 18-liter tank.

Braking system - drum . The gearbox is a two-way, four-speed design that transmits rotation to the rear wheel via a chain.

The softness of movement is ensured by the original shock absorption system:

• The front fork is telescopic with a spring-hydraulic shock absorber;
• The rear fork is pendulum with a hydraulic shock absorber.

As already mentioned, the Planet 2 frame is an all-metal tubular structure.

The deep fenders of the motorcycle are also made of metal, since plastic was practically not used then.

Detailed information about the IZH Planet 2 power unit can be found in the following table.

One of the most remarkable models of the domestic motorcycle industry is IZH Junker, review and characteristics of the model.

The model of this domestic motorcycle was developed in 1974, and at that time it was a unique concept.

Main advantages

Motorcycles IZH Jupiter -5 were quite simple in design and did not require large maintenance costs. Today there are many who want to criticize this technique without regard to the times, but the model was in great demand among the population. She is not forgotten even now. On the secondary market only, on Avito websites, more than 2,000 units of equipment are offered for sale every day. The main reasons for its popularity are:

• Maintainability and simplicity of design.
• The presence of a semi-automatic clutch.
• Smooth ride, comfortable movement.
• Can be used with or without a side trailer.
• Good car dynamics without a side trailer.
• Durable welded tubular frame.
• Reliable and simple gearbox.
• Powerful alternator, good light.
• Confident engine starting in any weather conditions.

This is not an exhaustive list of the outstanding qualities of the machine.

The motorcycle has the highest level of maintainability. The shortage of spare parts of that time has given way to their abundance today. Any components can be purchased through online stores or in markets at affordable prices. With a small set of tools, a motorcycle of the simplest design can easily be rebuilt on the road. Replacing parts of the cylinder-piston group can be done without any problems directly in the field. More complex repairs involving removal and complete disassembly of the engine are possible in a garage without the involvement of large specialists or special tools.

The motorcycle is equipped with a semi-automatic clutch, which greatly facilitates the driver’s work. Gear shifting is possible without squeezing the clutch lever on the steering wheel. The clutch release mechanism is activated automatically when you press the gear shift foot. Before pressing the foot, it is advisable to release the gas - the switching will occur smoothly, without jerking the transmission. No other domestic motorcycle has such a system.

The machine is characterized by a smooth ride in single mode and with a side trailer. Riding a well-maintained motorcycle is a pleasure. The driver's position is comfortable and ergonomic. The passenger in the side trailer feels comfortable, protected from the flow of oncoming air and dust by a high transparent plastic reflector and a soft, durable awning made of leatherette. The trailer wheel has a spring-hydraulic shock absorber, which effectively absorbs uneven road surfaces.

A motorcycle with the index Izh Jupiter-5K-01 can be used with or without a side trailer. Operation of a motorcycle with a trailer is possible only if there is a corresponding mark in the technical passport when registering with the traffic police. When installing a trailer, the final drive gear ratio is changed by installing a smaller diameter drive sprocket with 16 teeth. At the same time, the engine traction force increases significantly due to an increase in the number of crankshaft revolutions. A 19-tooth drive sprocket is installed on a single motorcycle, increasing the speed capabilities of the motorcycle.

Without a side trailer, the machine has good dynamic capabilities. The two-cylinder engine quickly picks up speed and is capable of accelerating the car from a parking lot to 100 km/h in 12 seconds. This figure is 0.5-1.0 seconds better than that of the most advanced car at that time, the VAZ-2109, or the popular imported Java-350 motorcycle.

The motorcycle is assembled on a durable tubular frame, which is simply impossible to damage if used correctly. The side trailer has its own, no less durable frame, made of thick-walled steel pipes.

The gearbox is assembled in the same housing with the engine and has its own crankcase compartment. The unit is powerful, reliable, always working without problems throughout the entire service life of the motorcycle. There is an inspection hatch on the side cover of the clutch drive mechanism to check the oil level in the clutch housing and gearbox.

Electrical equipment operates from a powerful modern 12 V alternating current generator. Alternating current is converted to direct current by a diode bridge. All old problems associated with the operation of 6-volt DC generators installed on previous machines have been eliminated. The electrical system has become significantly more reliable. The headlight has halogen optics, which produces a fairly powerful stream of light.

The engine starts reliably at any time of the year due to the installation of an emergency start system that supports starting with a weakly charged battery.

Estimated cost

For obvious reasons, it is almost impossible to purchase a brand new IZH Planet 2 motorcycle, but it is quite possible to buy an old machine with a solid mileage or a well-restored bike with modern analogue parts.
On the Russian secondary car market, this model (depending on condition) is offered at a price from 10,000 to 30,000 rubles.

The cost depends on the condition, year of manufacture and mileage of the motorcycle.

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Weaknesses of the IZH-P5 engine

• Air filter;
• Cylinder-piston group;
• Transmission.

More details about the weak points of the IZH-P5 power unit...

Air filter. To prevent dust from entering the engine, frequent washing and oiling of the filter element is required. Installing a paper filter would reduce the time spent on engine maintenance during maintenance and would improve the quality of cleaning the air supplying the carburetor.

The CPG wears out after 20,000-25,000 km due to the lack of water cooling.

Transmission. Over the years, due to wear and tear, the gears switch off on their own and adjustment does not eliminate the problem. In this case, it is necessary to overhaul the gearbox and replace worn out parts.

Motorcycle modifications

There was only one main factory modification of the Izh Sport, on the basis of which several specific subtypes of the motorcycle were made - for cross-country races, for long trips over rough terrain and for ice racing. The first is popularly called Izh PS Cross, although the correct name is Izh K-15. The enduro version is called Izh M-15. Both are now very difficult to find for sale in decent condition.

But the existence of the Izh Planet Sport 500cc is just a widespread myth. People often tell stories that the IzhMash plant produced a 500 cc limited version, but this is not true. Garage craftsmen sometimes bored the engine to increase volume by installing pistons from CZ, but even in this case the volume did not reach 500 cm³, since the cylinder walls were too thin to allow such boring. The existence of a “reborn” Izh Planet Sport 2 with a 650 cm³ Rotax engine from BMW also belongs to the realm of myths. This “duck” with fake photos at one time alarmed the Internet, but, as it turned out, it was just someone’s joke.

Reasons for repair.

Complete disassembly of the Izh Planet 5 engine during repair work is carried out if damage or breakdown of the following elements occurs:

Failure of these parts can occur due to engine jamming, general severe wear, which is accompanied by increased noise during operation, as well as various knocking noises in the crankcase. In addition, repair of the Izh Planet engine with its complete disassembly is carried out when the crankshaft seals are worn out.

The presence of such a breakdown is indicated by the following points: difficult starting of the internal combustion engine, loss of power, increased smoke.

At the initial stage of production of power units, the reed valve on the Izh Planet 5 had certain technological shortcomings associated with low strength. Therefore, it quickly collapsed, its elements fell inside the cylinder, which required further disassembly and, in most cases, replacement of the Izh Planet 5 piston. After a certain time, the manufacturer eliminated this defect.

If, when operating the engine, all routine and technical maintenance procedures established by the manufacturer were observed, and appropriate technological materials and fluids were used, then it was operated for a long time, while maintaining its technical parameters.

Tools

Tools you will need:

1. Drill or screwdriver
2. Metal drill 4 - 5 mm
3. Flat file
4. Technical hair dryer
5. Mandrels. Plumbing fittings can be used as mandrels
6. Powerful flat head screwdriver
7. Open-end or socket wrench 14
8. Clamp
9. Hammer or mallet
10. Oil can or syringe
11. Sealant

Familiar problems

Reviews from owners indicate that, regardless of the version and year of manufacture, the Izh Planet-3 motorcycle had the same disadvantages:

• Engine vibration associated with its design features. Almost all single-cylinder engines suffer from this.
• Problematic electrical equipment. Almost identical to the Jupiter of the same years of production, the 6-volt wiring installed on Izh Planet-3 was not of very high quality. An insufficiently powerful generator created problems when driving at night.

Completely eliminating engine vibrations is almost impossible. Even serious engine tuning does not completely solve the problem. You have to put up with this feature of technology. As for electrics, motorcycle lovers who are interested in tuning Izh Planet-3 often ask the same questions:

• How to detect ignition system malfunctions?
• What to do if charging is lost?
• How to replace the relay regulator?
• Does it make sense to install electronic ignition?
• How to replace a failed generator?
• Where can I find the wiring diagram for Izh Planet-3 at 6 volts?
• How to install BSZ?

These questions are countless and it is simply impossible to answer them in one review article. This requires digging deeper. And therefore we will try to answer as briefly as possible.

1. Since the wiring diagram on Izh Planet-3 was repeatedly changed even depending on individual series, one cannot count on an exact match of its description. Sad but true.
2. Replacing electrical wiring, switching electrical equipment operating from 6 volts to 12 volts and installing contactless ignition are completely justified steps to improve the performance of a motorcycle. After such modernization, ignition installation is simplified, and engine operation becomes more stable. At the same time, you will know exactly how the electrical circuit of your Izh Planet-3 works!

But it’s clearly not worth getting down to business without the necessary skills or suitable tools. As for DIY tuning enthusiasts, for them the Izh Planeta-3 motorcycle is an unplowed field for activity. There is room to expand here. Go for it!

If you found the article useful and interesting, continue to expand your horizons by getting acquainted with the history and structure of popular technology. Find out what might be interesting about tuning Izh Jupiter-5, or what technical characteristics the Ant cargo scooter had. Stay on our website!

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