IZH Jupiter 5

cylinder and piston group:
1.lack of oil in the fuel - leads to jamming of the piston in the cylinder in the first seconds of operation
2. exceeding 6000 rpm - It leads to wear of the rings and the cylinder, the appearance of scuffing on the cylinder and piston, loosening of the crankshafts and overheating.
3. low amount of fuel and a lot of air in the fuel mixture - It leads to overheating and insufficient lubrication of the cylinder-piston group.
4. a large amount of fuel and a small amount of air in the fuel mixture - it leads to the appearance of carbon deposits in the combustion chamber, increased smoke, poor response to gas, and occasional exhaust discharges (the same thing happens with too much oil in the fuel)
5. Overheating - most often leads to a piston pinching in the cylinder (short-term jamming) and subsequently scuffing and loss of compression, sometimes if there was little oil, the connecting rod in the crankshaft can jam, and this is a real critical

The clutch:

1. clutch combustion - the clutch "disappears", it appears if you drive for a long time with the clutch half-squeezed out or when the engine is under heavy loads.
2. natural wear and tear - The clutch may gradually disappear and slip as the release discs wear out.

Transmission box:

1. natural wear and tear - gears may start to fly out, the gearbox starts to stick hard, "floating" gear shifting

ignition:

1. loss of spark - This is usually a result of oxidized contacts or poor battery charging.
2. earlier ignition - poorly tuned ignition, the motorcycle may start to "kick" in the foot when starting, or it may start backwards (two-stroke engines can do this)
3. late ignition - loss of power

electronics:

1. incorrect operation (turn on the headlight and turn on the turn signals) - the consequence of poor contact with the mass
2. short circuit - occurs when the battery is short-circuited to the ground
3. local electrical failure - poor wire contact and oxidation

the engine has a traction character, it does not spin above 6000-6500 rpm, the maximum safe crankshaft speed is 5500, the maximum power comes after 2000 revolutions up to 4000, the engine itself is very moody and breaks down easily, although it can forgive some mistakes because of its simplicity and reliability (Soviet quality), for the same reason for this reason, it is also repaired on the knee, no special skills are needed, so it seems to break down often, but it is practically impossible to destroy it.

the wheels are chrome-plated spokes.

a complete set of a motorcycle with a sidecar exists

the maximum speed according to the documents is 125 km/h, with a side trailer 110 km/h

The dry weight of the motorcycle is 160 kg

the motorcycle's steering wheel is like an ordinary civilian moped, there are no complicated remotes, only a kill switch, a headlight mode switch, turn signals, a horn, a throttle lever, a clutch lever and a front brake lever, the dashboard is mounted on the headlight as a separate "box"

the battery is located under the left glove compartment in the center of the motorcycle, but if the glove compartment is usually empty, you can remove the motorcycle seat because there is a filter box under it, there is no trunk, the front fender is metal, attached to the wheel axle, the rear wing is also metal, attached to the frame, spring-loaded oil shock absorbers, two in the fork in front, and two vertical shock absorbers attached to the frame and the wheel pendulum in the rear, the color of the motorcycle is red
the engine is open, centrally located in the lower part of the frame, air-cooled (due to powerful fins of the cylinders), two-stroke twin-cylinder with an inline cylinder arrangement, 180 degree crankshaft camber, aluminum engine itself, divided into two parts, left with clutch (clutch chain drive), kick starter mechanism and crankshaft sprocket, right with wheel drive star and alternator, ignition (sits on the crankshaft), In the central part of the engine, closer to the rear wheel, there is a gearbox (and a primary with a secondary shaft), and in the front central part there are two crankshafts for each cylinder, which are connected by a flywheel in the center, the crank chamber is separate from the gearbox because it is lubricated by an oil-gasoline mixture.it has two exhaust pipes for each cylinder on the sides of the motorcycle passing from the bottom to the sides of the rear wheel, they have weak noise insulation, so the exhaust is loud, if you pull out the plug it will be even louder, the pipes are not resonant, the exhaust smokes normally due to the presence of oil in the fuel (the more oil the more it smokes)

The IZH Jupiter 5 was a classic motorcycle with a tubular metal frame, a round headlight with an incandescent lamp, a universal fit (the motorcycle can be controlled both vertically and horizontally), an impossibly simple design and mechanics, and the absence of any plastic parts. Its heart is a two-stroke two-cylinder (in a row) engine with a volume of 350 cubic meters and a capacity of 24 hp, with a chain drive (chain on the right), a sequential gearbox with 4 gears (1-N-2-3-4 ) with a footswitch and a semi-automatic machine built into the gearbox foot (the ability to squeeze the clutch together with gear release), drum brakes in front and rear, kickstarter-only engine start method (kickstarter on the left on the shaft of the gearbox foot), electronics without any protection against slipping, skidding, wheel locking, since electronics are only needed to power the headlights, turn signals, brake light, ignition and some indication on the dashboard (discharged battery, neutral, oil level). The speedometer is mechanical from the front wheel drive (it often lies), there is no tachometer. the electronics themselves are 12 volt, powered by a generator or battery, cam ignition. Carburetor float fuel supply, from one carburetor, fuel – gasoline with oil (for piston lubrication), multi-disc wet clutch.

as I mentioned, this is a classic-looking motorcycle, something like a Harley Davidson, but much simpler and closer to the Japanese bikes of the 70s, with 18-inch wheels on universal tires
fuel consumption is 6 liters per 100 km, the fuel tank is 18 liters, which gives a power reserve of approximately 300 km

unlike its single-cylinder counterpart IZH Planeta 5, IZH Jupiter has a more calm but sporty nature on the highway, and it is not so chaotic.

IZH Jupiter 5 is the work of Izhevsk machine-building plant, its production began in the late 80s (early models) already in the early 90s, the final version was released, and in the late 00s production was finally closed on it (and IZH planet 5), IZH Jupiter 5 became the most popular motorcycle in Russia and the USSR after IZH planet 5, it combined everything better from the previous 4 models and was essentially an upgrade of the 4th model and its improvement, since it differed in fact only by a deformed motor in favor of reliability and slightly improved ergonomics and 12-volt electrics (which is on the 4th model was very vulnerable)