Škoda 9Tr: the legendary trolleybus that changed urban transport

Trolleybus Škoda 9Tr One of the most recognizable and mass models of electric transport in the history of the USSR and Eastern Europe. Produced from 1961 to 1982, it became a symbol of the era, combining simplicity of design, reliability and adaptation to harsh climatic conditions. Although it has been over 40 years since the last edition, many Škoda 9Tr They are still exploited in cities of the post-Soviet space, which indicates their exceptional survivability.

In this article we will look at technical specifications, history of creation, modifications and nuances of operation Škoda 9Tr. We will pay special attention to those aspects that make this model unique – from design solutions to repair features. If you are interested in retro transport, are planning to buy a rare trolleybus or just want to learn more about the legend of city streets, this material will be useful.

The history of the Škoda 9Tr: from the Czech Republic to the USSR

Trolleybus development Škoda 9Tr It began in the late 1950s at a Czechoslovak factory. Škoda Ostrov nad Ohří. The model became the successor to the less successful Škoda 8TrInheriting some technical solutions from it, but having received a completely new body and an improved electrical part. The main task of the engineers was to create trolleybus capable of withstanding intensive operation in Soviet citiesThe climate and quality of the roads placed increased demands on transport.

The first prototypes appeared in 1958, and mass production began in 1961. The USSR became the main importer: over 21 years it was delivered more than 11,000 carsThis was the lion’s share of the total issue (about 12 thousand copies). The trolleybus quickly gained popularity thanks to:

• 🔧 Simplicity of design The lack of sophisticated electronics made repairs easier.
• ❄️ Adaptations to cold - reinforced thermal insulation and heating of the cabin.
• 🚏 Versatility - the ability to work both in single mode and in a coupling.
• 💰 Low cost compared to the Western counterparts.

I wonder what Škoda 9Tr became the first trolleybus in the USSR equipped door-to-door (In the early versions, they were pneumatic). This innovation significantly accelerated the boarding and disembarking of passengers and reduced the load on the driver.

Specifications: what's under the hood of the legend

Construction Škoda 9Tr It was built on the basis of a bus chassis Škoda 706 RTObut with significant modifications for electric traction. The body was made of steel, and the frame was strengthened to increase rigidity. The length of the trolleybus was 10.5 metersThe width is 2.5 meters, which allowed to transport up to 90 passengers (including standing ones).

Key technical parameters:

Parameter	Meaning
Engine	TED. TE 022 (power 80 kW)
Maximum speed	65 km/h
Battery power reserve	Up to 5 km (in emergency mode)
Brake type	Pneumatic + electrodynamic
Mass (empty)	9.2 tons

The peculiarity of the model was rheostaticIt allowed for smooth speed control, but required certain skills from the driver. Electrical equipment was operated on voltage 600 Vand lead-acid batteries were used for emergency traffic 6ST-128 128 Ah capacity.

⚠️ Attention: In earlier versions Škoda 9Tr (until 1965) used in the asbestos brake padsAnd they were putting out the dust when they were stained. When repairing such models, precautions must be observed or shoes replaced with modern asbestos-free analogues.

Modifications of the Škoda 9Tr: from the basic version to unique examples

During production Škoda 9Tr It has undergone several modifications adapted to different operating conditions. Main versions:

• 🚌 9Tr - basic model with pneumatic doors and manual control.
• 🚌 9TrH - modification for cold climate (Reinforced heating, double-glazed windows).
• 🚌 9TrHT - Tropical version with improved ventilation (delivered to Africa and Asia).
• 🚌 9Tr14 — experimental model with thyristor-pulse control (1970s)

Deserves special attention Soviet modifications, issued on the base Škoda 9Tr:

• 🔧 ZiU-5 - licensed copy, produced in the USSR since 1959 (before the appearance of the 9Tr).
• 🔧 KTG-1 - Kiev version with a modified design of the front part.
• 🔧 Trolsa-9. - modernized version with new electrical equipment (1980-ies).

The rarest modification is considered to be Škoda 9Tr14 In total, about 20 copies were released. She was equipped. contactless controlThis greatly simplified driving and reduced wear and tear of mechanical parts. Unfortunately, due to the high cost and complexity of maintenance, the project did not get developed.

Why didn’t the ŠKODA 9Tr14 go into production?

The main reason is the lack of the necessary electronic base for the repair of thyristor systems in the USSR. In addition, Czechoslovak engineers were unable to ensure sufficient reliability of components in the conditions of temperature and vibration changes.

Operation and repair: advice for owners and enthusiasts

Despite the simplicity of the design, Škoda 9Tr It requires regular maintenance, especially when it comes to rare specimens. Mainstream problem areas:

1. Electrical equipment Over time, the insulation of the wires dries up, which can lead to short circuits. It is recommended to check the condition of the tourniquets every 2-3 years and replace damaged areas.
2. Pneumosystem Air leakage from the brake system and doors is a frequent problem. It is necessary to monitor the condition of hoses and pressure gauges.
3. Body - rust on the thresholds and in the welding areas. For protection, use zinc-based anticorrosive compounds.

When restoring the trolleybus, pay attention to the following nuances:

One of the most difficult tasks is finding spare parts. Many parts have long been discontinued, but they can be found:

• 🔍 Disassembled in the Czech Republic or Slovakia (original components).
• 🔧 Russian manufacturers producing analogues (for example, Trolza or BKM).
• 🛠️ In workshops for the restoration of retro vehicles (custom production).

⚠️ Attention: When replacing an electric motor TE 022 to modern analogues (for example, DK-210) may require flashing the control system. Incompatibility of parameters leads to overheating of the windings.

Škoda 9Tr in culture: from cinema to museums

Trolleybus Škoda 9Tr became not only a workhorse of urban transport, but also a full-fledged cultural symbol. He appeared in dozens of Soviet films, including:

• 🎬 〈Diamond hand〉 (1968) - episode with a trolleybus chase.
• 🎬 〈Irony of fate〉 (1975) - scene in a Moscow depot.
• 🎬 〈Gentlemen of Fortune〉 (1971) - trolleybus as part of the urban landscape.

Extant copies today Škoda 9Tr can be seen in transport museums:

• 🏛️ Museum of Urban Passenger Transport (St. Petersburg) — restored copy of 1965.
• 🏛️ Trolleybus Museum in Riga - the only one in the Baltics 9TrH in working order.
• 🏛️ Czech Transport Museum in Brno - 1958 prototype.

Enthusiasts around the world are engaged in the restoration of these cars. For example, in Kyiv there is a club for retro transport lovers who bring old ones back to life Škoda 9Tr for parades and excursions. One of the most famous projects is the conversion of a trolleybus into mobile bar while maintaining the original design.

Modern analogues and heritage of the Škoda 9Tr

Although Škoda 9Tr Long out of production, its design solutions influenced many subsequent models. Among the direct "heirs":

• 🚌 Škoda 14Tr (1980s) - articulated trolleybus based on 9Tr.
• 🚌 ZiU-682 (1970s) - Soviet analogue with improved passenger capacity.
• 🚌 Trolza-5275 (1990s) - modernized version with an asynchronous motor.

Modern trolleybuses such as Škoda 27Tr or BKM-321, inherited from 9Tr:

• 🔋 Modular body design, simplifying repairs.
• ⚡ Regenerative braking system (first tested on 9Tr14).
• 🛠️ Unification of spare parts to reduce operating costs.

Interestingly, in some cities (for example, in Minsk and Chisinau) modernized ones are still in use Škoda 9Tr with new engines and control systems. This proves that with proper care, the machine’s lifespan is practically unlimited.

FAQ: answers to frequently asked questions about the Škoda 9Tr

🔹 How much does the Škoda 9Tr cost today?

Price depends on condition:

• 💰 On the move, in working order — from 500,000 to 1,500,000 rubles.
• 💰 For restoration (without engine or body) — 100,000–300,000 rubles.
• 💰 Museum copy (fully restored) - up to 3,000,000 rubles.

The most expensive are cars with a documented history (for example, those that participated in the filming of films).

🔹 Is it possible to convert the Škoda 9Tr into an autonomous electric bus?

Technically this is possible, but it will require:

1. Replacing the traction motor with a modern asynchronous one.
2. Installation of lithium-ion batteries with a capacity of at least 200 kWh.
3. Modernization of the control system (for example, based on controllers Curtis or Zapi).

An example of a successful remodel is the project 〈RetroBus〉 in Prague, where Škoda 9Tr equipped with batteries and made completely autonomous.

🔹 Which cities still use the Škoda 9Tr?

As of 2026, scheduled flights are operated by:

• 🇲🇩 Chisinau (Moldova) - about 15 cars.
• 🇷🇴 Cluj-Napoca (Romania) — 3 copies on tourist routes.
• 🇺🇦 Lviv (Ukraine) — 2 trolleybuses in the retro park.

In Russia the latest Škoda 9Tr were written off in the 2010s, but individual copies are kept in the depot as a reserve.

🔹 How to distinguish a Škoda 9Tr from a ZiU-5?

Main external differences:

Sign	Škoda 9Tr	ZiU-5
Headlights	Round, separate	Rectangular block headlights
Windshield	Solid, curved	Divided into two parts
Doors	Pneumatic (in earlier versions)	Electropneumatic

🔹 Where can I buy spare parts for the Škoda 9Tr?

Main sources:

• 🛒 Czech showdown — 〈skoda-bus.cz〉 (original parts).
• 🛒 Russian manufacturers — 〈Trolza〉, 〈BKM〉 (analogues).
• 🛒 Auctions — eBay, 〈RetroBus〉 (used components).

For rare parts (for example, instrument panels), contact the retro vehicle communities at 〈forums〉.