When 1 (very big) cylinder is enough // hot-bulb tractors working hard!
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- Опубліковано 10 лют 2025
- The hotbulb, or hot bulb engine or vaporizing oil engine is a type of internal combustion engine. It is a surface ignition engine in which the superheated fuel is ignited by being brought into contact with oxygen-rich fresh air, rather than by a separate source of ignition, such as a spark plug.
It was perfected by Herbert Akroyd Stuart in the end of the 19th century. The first prototypes were built in 1886 and production started in 1891 by Richard Hornsby & Sons of Grantham, Lincolnshire, England under the title Hornsby Akroyd Patent Oil Engine under licence. It was later developed in the USA by the German emigrants Mietz and Weiss by combining it with the two-stroke engine developed by Joseph Day. Similar engines, for agricultural and marine use, were built by Bolinder in Sweden. Bolinder is now part of the Volvo group.
The engines were usually one cylinder, four-stroke units, although following Mietz & Weiss' developments in the USA, 2-stroke versions were constructed.
Lanz Bulldog:
The Bulldog was a simple and easily maintained vehicle due primarily to its simple, single cylinder, horizontal, two-stroke, hot bulb engine. Initially the engine was a 6.3 litre, 12 horsepower unit, but as the Bulldog evolved the engine was increased to 10.3 litres and 55 horsepower. While hot bulb engines were crude, they were easy to maintain and could burn a wide variety of low grade fuels - even waste oils. The engine was designed by Fritz Huber.
The Bulldog was similar to other European hot-bulb tractors that were being produced around the same time. Some of these examples are the SF Vierzon from France, the Landini tractor from Italy, and the HSCS from Hungary. The Field Marshall that was produced in England, was a similar design to the Bulldog hot-bulb engine with the exception of an internally designed vaporing plate which replaced the conventional externally located hot-bulb, this internal design required ignition papers in place of the external blow lamp to start the engine.
Original links:
• Vierzon 402 Hard At Work
• Engine running backwar...
• Lanz Bulldog 45 Full P...
• Lanz Bulldog - Spektak...
• Oldtimers ploegen in M...
• 40 Jahre Lanz Bulldog ...
• 2018 28876 Oyten Backs...
• 🇫🇷 Démarrage Société F...
• Starten Deutz ééncylin...
• Lanz Bulldog in action...
• Één cilinder trekkertr...
• Lanz & Ursus- Oldtimer...
• Ravels 2009 Ursus gloe...
• Één cilinder trekkertr...
• Ursus gloeikop starten...
• Gloeikoppen weekend 2014
• SFV 302 bois 21 09 030
• SFV 551 en pleine charge
• SFV 204 regain 21
• 552 labour
• sfv 302 et bolinder S ...
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That runaway Lanz Bulldog at 3:30 was a real trip.
Wow. Fantastic machines and lots of history behind. 👏
Thanks for the video I enjoy a work horse.
Fun facts:
Hot bulb engines can run at 0 rpm!
The odd shaped exhaust is designed to prevent glowing particles being blown in the air and possibly causing fire.
Never seen one,,, but that is one Amazing 😎 tractor,,,the sound awesome thanks
I am so impressed at that thing's ability.
Never saw a tractor like that man they pull
10 litre single cylinder is no suprise
É coisa que eu admiro, é um povo se orgulha de suas raízes dá tradição 👏🏻👏🏻👏🏻🇧🇷 Brasil
Widzę że jest i nasz Polski URSUS C45, dziękuję za film, pozdrawiam serdecznie
The great thing about them is that they'll run on almost anything... Burnt oil for example 😁
Esto es estos tractores es una reliquia son buenísimos
Красота 👍👍👍
Beautiful machines. Most are, I guess, in their "historical configuration".
BTW The fact that anti-roll-over cage was not in use for so damn long is really baffling to me, even though thousands of people were injured or killed rollover accidents every year in US and A alone, and it was a problem considered serious even back in 1920. Only in 1959 Sweden introduced a proper legislation and US in 1967, and even then it took several decades for it to really gain traction.
3:33 That must be very hard on the transmission!
Bellissimo video 🌈 🌞 📹 🌈 🌞
J'adore
🚜🚜🚜🚜🚜😎😎😎😎😎👍