Soviet motorcycles today are considered valuable transport, because back then they produced really high-quality and fast equipment. The Izh Jupiter 5 motorcycle is considered one of these legends of the USSR.
The Izhevsk plant produced several models, including Planet 5 and others. But Jupiter 5 was remembered primarily for its unpretentiousness on roads and maneuverability. With its small dimensions, the model was able to achieve low fuel consumption.
pros
- powerful engine;
- sharp at start;
- spare parts for Izh Jupiter 5 are inexpensive and available;
- soft suspension;
- low cost;
- has 2 cylinders.
Minuses
- weak front fork;
- requires good ignition settings;
- high fuel consumption;
- Motorcycles today require frequent repairs.
Engine
Engine type - two-stroke, single-cylinder Displacement, cm cubed - 346 Cylinder diameter, mm - 72 Piston stroke, mm - 85 Compression ratio - 7.8 - 8.2 Maximum power, kW - 14.7 Maximum power, l. With. — 20 Lubrication system — together with fuel Ignition system — battery Rotation speed of the crankshaft at maximum power, rpm. — 4850 Carburetor — K-62I Fuel used — gasoline with an octane number of at least 76 Air cleaner — contact oil.
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Motorcycle appearance
When the Jupiter 5 model came out, its design was already well-known, because it was inherited from the Jupiter 4 motorcycle. But soon the Izh Planet 5 appeared on sale, and the developers saw that they could borrow several design elements.
The first modification had a square-shaped dashboard, which consisted of several indicators, an ignition switch and a speedometer. But soon its appearance was redesigned, and instead of one dashboard there were two. On the first part they placed warning lamps, and on the second part they decided to put a speedometer.
The design of the fuel tank has also been slightly redesigned, with rubber pads on the knees and the shape of the tank itself has become slightly different. Accordingly, in the new modifications of the Moto Izh Jupiter 5, it received a different, longer seat that ended at the brake light. This innovation is still considered stylish and modern.
During the Soviet era, creating high-quality and impressive equipment was as easy as shelling pears, because the country had all the resources for this. Thus, the Izhevsk plant produced a motorcycle that is capable of carrying a load of up to 500 kg. Just imagine what could be carried on this transport!
Being a workhorse, the motorcycle had a fairly sporty appearance and excellent top speed. With a power of 25 hp. the motorcycle could accelerate to 120 km/h. This is a completely standard indicator, because another representative of the Dnepr could give a maximum speed of 110 km/h. In severe frosts down to 30 degrees, the unit started up perfectly, which cannot be said about the current new products. Unfortunately, many owners complain of frequent engine breakdowns due to their long lifespan.
Power transmission
Double-row bushing chain Gear ratio from the engine to the clutch - 2.17 Clutch - multi-plate in an oil bath Gearbox - four-speed From the gearbox to the rear wheel - closed bush-roller chain Gear ratio from the gearbox to the rear wheel - 2.33 Shift - foot lever Gearboxes box ratio: at first speed - 3.17 at second speed - 1.81 at third speed - 1.26 at fourth speed - 1.0 General gear ratios: at first - 16.03 at second - 9.16 at third - 6.37 in fourth gear - 5.05.
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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.
Adjustment data in millimeters - mm
Gap between breaker contacts - 0.4 - 0.6 Gap between spark plug electrodes - 0.6 - 0.75 Free play at the end of the clutch lever - 5 - 10 Free play at the end of the handbrake lever - 10 - 20 Free play at the end foot brake lever -10 – 25 Free play of throttle and corrector cables – 1 – 2 Ignition timing to t.m.t. — 3.0 — 3.5 Rear wheel drive chain slack — 20 — 30 Air pressure in tires, MPa: front — 0.15+0.01 rear — 0.21+0.01.
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General overview of Izh "Planet-5"
| Options | Values | Notes |
| Weight | 158–165 kg | Average weight class according to the USSR classification. The weight of classic motorcycles produced today ranges from 70 to 250 kg |
| Maximum Load Weight | 170 kg, including 20 kg luggage | |
| Ground clearance (at maximum load) | 135 mm | |
| Wheels | spoked | |
| Distance between wheel axles | 145 cm | |
| Dimensions (roll bars, trunk, mirror and half-fairing are not taken into account) | ||
| Length | 220 cm | |
| Width | 81 cm | |
| Height | 120 cm | |
| Electric battery | 6MTS-9, 12 V, 9 Ah | |
| Electric generator | 7.107-3701010, single-phase, 90 W, 14 V | |
| Fuel consumption and motorcycle speed | ||
| Fuel tank capacity | 19 l | This gas tank capacity allows you to travel about 300 km without refueling along the way. Refill tanks are described in detail in the instruction manual. |
| Gasoline consumption (per 100 km) | 5–6 l | Modern motorcycles with similar characteristics consume 3 liters of fuel per 100 km. |
| Maximum driving speed | 120 km/h | Depends on the condition of the engine and other factors. The maximum speed of today's analogues is 100–140 km/h, and do not forget that they have a fifth gear. |
| Time to reach 100 km/h | 12–15 sec | |
| Brakes | ||
| Front and rear wheel brakes | mechanically driven drum | Currently, drum brakes are considered obsolete, and modern motorcycles are equipped with disc brakes - single or double. |
| Braking distances | 6.5 m – at 30 km/h 42.6 m – at 80 km/h | |
Other characteristics of the Izh Planet-5 motorcycle:
- possibility of hooking up a stroller
- possibility of installing a cargo trailer, luggage holder and knee pads
- presence of glove compartments on both sides of the seat
Indicators on the dashboard:
- turning on the turn signals
- presence of current from the battery
- high beam
- neutral
- place for the oil sensor - the sensor itself is not initially installed
Design
The motorcycle retained the crew part of the Izh-56 motorcycle, but had a completely new engine - a two-cylinder, two-stroke, with a vertical transverse in-line arrangement of cylinders, air-cooled with a return-loop double-jet purge, with the preparation of the working mixture in the carburetor and its ignition in the cylinder from an electric sparks. The carburetor is closed with special casings (with a metal valve for access during start-up), the air filter is a contact oil filter. The parts of the connecting rod and piston group (piston, connecting rod, piston rings, piston pin, retaining rings, bearing rollers of the lower end of the connecting rod) are unified with the corresponding parts of the K-175 motorcycle engine.
The two-arm foot shift pedal and kickstart pedal are located on the left side of the gearbox housing. Izh-Jupiter, like all subsequent two-cylinder models, was equipped with an automatic clutch release mechanism.
The speedometer drive, unlike the Izh-56, is from the front wheel.
The front sprung mud shield is attached on a cast bracket to the lower bridge of the front fork, which eliminates the possibility of it becoming clogged with dirt.
Rubber
Re: Rubber
Post by Detonator » Aug 21, 2012, 11:04 pm
Re: Rubber
Post by Dimons594 » Aug 22, 2012 1:25 pm
Re: Rubber
Post by zaya3123 » Aug 22, 2012 4:48 pm
Re: Rubber
Post by Detonator » 22 Aug 2012, 20:54
Re: Rubber
Post by Dimons594 » Aug 23, 2012 11:44 am
Re: Rubber
Post by zaya3123 » Aug 23, 2012, 4:25 pm
Re: Rubber
Post by Dimons594 » Aug 23, 2012 4:55 pm
Re: Rubber
Post by DELTA 45 » Sep 13, 2012, 10:41 pm
Re: Rubber
Posted by StefanJB » Jul 20, 2013, 10:06 pm
07/20/2013 the motor was assembled. tested on the road. The rubber fit snugly. When assembling the suspension, ONLY standard motorcycle parts were used, no modifications by welding, files, grinders, adding washers, etc. nothing was done, nothing rubs, everything is within acceptable limits, but in some places on the verge. Recommendations when installing the rear wheel 120/90 - R18: 1. adjust the mounting ear of the intermediate rear brake lever (the bushing on the right “horn” of the pendulum) slightly to the rear, about one centimeter, in this case you will have to replace the linkage between the intermediate lever and the pedal with a more long 2. keep an eye on the corrugations of the chain, the bottom one got caught during installation - the solution is to turn the corrugation around its axis (without removing the chain) 180 degrees, because corrugations, even new ones, have a slight longitudinal curvature. 3. the wheel has to be installed together with the snail - it won’t fit any other way. result of the experiment: I officially declare: the maximum tire size that can be installed on the rear wheel of an IZH Planet motorcycle is 5 without any modifications 120/90 - R18
PS special thanks to alekseimor' for the correct hint
I purchased new tires and chose the tread specifically the same as from the factory. The tires came with tubes, which of course makes me happy.
The reason for this was that once while riding with a friend in this damn jalopy, my rear wheel broke)). I guess from old age.
Since I was changing the tires, I replaced the wheel bearings, the flipper (rim tape), and removed the eight wheels a little.
