Technical characteristics of IZH "Jupiter 5", a brief overview of the domestic motorcycle

The popularity of motorcycles is ensured by their small overall dimensions, lower fuel consumption than a car, and most importantly, very high maneuverability. And if we take modern motorcycles, then another advantage is their high speed performance.

Of course, now the roads are driven mainly by motorcycles from foreign manufacturers belonging to different classes. But some 20 years ago, only domestic motorcycles were seen on the roads.

The leaders on our roads were IZH motorcycles , represented by two models “Jupiter” and “Planet”. The manufacturers ran these two models in parallel; they had significant similarities, but there was one significant difference – the engine. “Planet” was equipped with a single-cylinder power unit, while “Jupiter” was equipped with a two-cylinder one.

The presence of two cylinders provided not only more power than the Planet, but also easier engine starting, since this unit did not have a return compression blow to the winding stem. Perhaps the best model was the IZH Jupiter-5, which should be considered in more detail.

Modifications

IZH "Jupiter" with index "5" came off the assembly line in 1985, two years earlier than the IZH "Planet-5" model. The appearance of the first Jupiter-5 was almost completely identical to its predecessor, Jupiter-4.

But the then new engine had slightly reduced power, but increased torque. Among the visible changes, Jupiter-5 was distinguished by a different finning of the cylinders, as well as a new flange mounting of the exhaust pipes.

IZH "Jupiter-5" was a middle-class motorcycle designed for traveling on roads with various surfaces. Three modifications of this motorcycle were produced.

The standard version was a modification without a side trailer, but equipped with fastenings for it, as well as a modification already equipped with a side trailer - a motorcycle with a sidecar.

The second modification was “Tourist”. This motorcycle was equipped with a side trailer; in addition, it had a spare wheel with increased lugs. This modification was designated as IZH “Jupiter-5T”.

The third modification was designated “Lux”, or IZH “Jupiter-5L”. This motorcycle was not equipped with a side trailer, and there were no fastening elements on the motorcycle for it. But it was equipped with a small fairing, there were also knee roll bars and a towed luggage rack.

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

06/04/2012 I bought tires for my Izhevsk casting: before IRC 100/90 -19 57H RS310F T/L – 3,150 rubles. rear IRC 120/90 -18 65H RS310R T/L – 3,400 rub. (Prices are indicated in the city of Perm) When installing this tubeless tire, pitfalls surfaced: 1. Orion casting is not technologically intended for the use of tubeless tires, because there is no inner side for this rubber to cling to. 2. There is an interesting discrepancy in the radius - it seems like the radii of the rubber coincide with the radii of the wheels, but in order for the rubber to sit in its seat, it was necessary to apply more air pressure to the wheel, only after that the click of the tire on the rim was heard.

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. re-cook the ear of the rear brake intermediate 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

Motorcycle design

But structurally the motorcycles of these modifications did not differ from each other.
All components of the motorcycle were mounted on a tubular frame. To provide suspension for the rear wheel, there was a subframe at the rear of the frame, attached to the frame by a non-rigid bolt connection. A power unit with a gearbox and a steering column equipped with a telescopic fork were installed on the front part of the frame. The fuel tank was located above the engine, and in front of it was the steering wheel, dashboard and headlight.

Behind the tank, the entire upper part of the motorcycle was allocated under the seat, with a rear fender with a brake light attached to it. Below the seat there were two glove compartments. The left one was for the battery, and the right one was for tools.

The rear wheel was installed on the existing subframe. To provide its suspension, the subframe, in addition to the non-rigid bolted fastening, was connected to the frame by means of spring-loaded oil shock absorbers. The springs had three-position adjustment, which provided a change in the rigidity of the rear suspension. The rear wheel was driven by a chain drive.

Exhaust pipes extending from the engine stretched along the entire motorcycle. To protect the driver and passenger from possible burns, the pipes were attached under the running boards.

The motorcycle was equipped with two-cam drum brakes with mechanical drive on both wheels. Subsequently, some versions were equipped with hydraulic front disc brakes.

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.

Design

As already mentioned, the first IZH “Jupiter-5” did not differ in design from the IZH “Jupiter-4” model. But with the advent of the new IZh “Planet-5”, the designers decided to borrow some external elements from this motorcycle.

So, the shape of the dashboard has changed. Previously, it was square with a speedometer, warning lamps and an ignition switch located on it. The new instrument panel consisted of two combined wells. The speedometer was installed in the right one, the left one was used for warning lamps. The ignition switch was installed between the dashboard and the steering wheel.

The shape of the fuel tank has changed somewhat, and it again acquired rubber pads for the knees; the first versions of the IZH Jupiter-5 did not have them. Along with the tank, the shape of the side glove compartment lids also changed.

The most significant thing in the design of the IZH “Jupiter-5” was the appearance of a seat with a small extension that turns into a brake light. People call this seat “Bench”.

Subsequently, the designers redesigned the engine itself. Now IZH Jupiter-5 motorcycles are already equipped with water-cooled units, although its power has not changed.

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Technical characteristics of the motorcycle IZH "Jupiter-5"

If you compare the IZH Jupiter-5 with modern motorcycles, then the technical characteristics and performance of the Izhak are more than modest. All of them are shown in the table:

Experience with operating motorcycles of the IZH Planet and IZH Jupiter families can be found in the reference literature. Here you can find the family of domestically produced IZH motorcycles.

The engine is practical and very reliable

The engine turned out to be very reliable and practical. The simplicity of the system and unpretentiousness made it easier not only to repair, but also to operate the motor. Having 175 cc per cylinder, it not only pulled a side trailer loaded to nowhere, but also developed a crazy speed of 120 km/h at that time. Compared to heavy motorcycles, it even gained 10 kilometers in speed. It also performs well at low temperatures.

Approximate price for IZH Jupiter 5

Despite such indicators, this motorcycle was in good demand among the people. He did not participate in major international competitions; for this there were other models of motorcycles. And it was not intended for competitions; its main task was a comfortable ride on any road .

In Soviet times, IZH Jupiter-5 was sold at a price of 1050 rubles. For comparison, the new heavy Ural motorcycle cost almost twice as much - 1,870 rubles.

Now this motorcycle, new and without mileage, will cost 55,000 rubles. Although you can also purchase IZH “Jupiter-5” with mileage. The price for it depends on the condition of the motorcycle itself, as well as the year of production, and it ranges from 3,000 to 40,000 rubles.

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The engine is practical and very reliable

The engine turned out to be very reliable and practical. The simplicity of the system and unpretentiousness made it easier not only to repair, but also to operate the motor. Having 175 cc per cylinder, it not only pulled a side trailer loaded to nowhere, but also developed a crazy speed of 120 km/h at that time. Compared to heavy motorcycles, it even gained 10 kilometers in speed. It also performs well at low temperatures.

Photos

The IZH Jupiter 5 motorcycle, as stated above, has been in production since 1985 and is now quite rare on our roads. It's quite difficult to find a motorcycle in good condition. But just recently, similar models of motorcycles were found almost everywhere. Let's see what it looked like.

Video

The video below shows a test drive of the motorcycle in the field, both on a dirt road and on asphalt. The motorcycle is specifically designed for off-road travel; under such conditions, this motorcycle can be a worthy competitor to foreign brands.

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Comments (6)

1. Vitaly:
   02/27/2015 at 17:49

   A Soviet motorcycle that has remained virtually unchanged over the years. It still has valveless primitive injection. You shouldn't expect much from him. Small motor lifespan. Always painful.

   Answer

2. Zolotoiy:

   02/28/2015 at 11:09

   Of all the motorcycles that I have had, and there were quite a few of them, IZH U5 is a song 25 horses, semi-automatic box, playful, powerful, but like a parody dog, it requires care, who will say it’s rash, you need to keep an eye on it, that’s all, and I recommend it to everyone

   Answer

3. sergmayorov:

   03/02/2015 at 12:46

   My friends, IZH U5 is still in my garage and drives steadily. Of all the Soviet-era motorcycles, this is the best. It lends itself to any tuning, the power is enough, the clutch is eternal. By the way, it holds the road better than a Java, since it is heavier. The spare parts are all domestic and cost a penny. However, the chances of crashing in this way are much less than in Japanese.

   Answer

   Read also:  Motorcycle "IZH Planet-3": description, photos, technical characteristics
4. Jahanger:

   05/15/2015 at 20:20

   My friends, IZH Yu5 is still in my garage and drives steadily. Of all the Soviet-era motorcycles, this is the best. It lends itself to any tuning; the power is enough to last forever.

   Answer

5. Vitaly:

   07/04/2015 at 20:00

   I have an Izh Jupiter 5 in my garage and it works like a watch, although it is 26 years old and its maximum speed is not 125 km per hour, but 160 km per hour, you just need to put 275 jets and a 21 sprocket on the chain, it will actually eat more.

   Answer

6. allvolley.ru:

   08/17/2016 at 11:03

   There is still such a device! And the condition is excellent, and quite nimble)

   Answer