Steam Tractor Running and Explained – Djursland, Denmark
One vehicle here Seemingly with chain driven steering It’s radiating heat Very, very nice looking mechanics It must be an ultra old design. There are rivets, instead of welded parts. Is this a steam engine? It’s a steam tractor. It’s a steam tractor, simply It’s a steam tractor. It’s powered in the exact same way as a locomotive What year is it from? It’s from 1929 It’s one of the last ones. The design was drawn .. the boiler, I think, was drawn in 1875 – 80 Around about that time. I haven’t got the exact date. As to the history, when one started doing this and that, is not something I know much about It is one of the last ones, because the engines.. It is one of the last ones as the combustion engines were taking over? Yes, yes. They were extremely energy consuming If you are a really good engineer, with many years experience it is said that you can reach 12 percent. Yes – where gasoline engines today reach 20 – 30 percent? Yes it’s in the order of 30 percent. Overall it’s considerably better. Yes indeed. But I suppose it’s also advanced, since it is one of the last steam engines. Advanced, understood as a steam engine? No, actually I would not say that. It could easily be 20 years older. There is no difference. There might be a little as to the casting molds being a bit different, but no, actually not. Couldn’t you show me the main components, and tell me what the different parts do, as this is new territory to me, and don’t know what everything is. Yes – this is the firebox. Presently it is very, very calm, as there isn’t any consumption, With consumption of steam, a draught is established, drawing in air from below by use of steam. With the steam passing the piston, and thus having been used, it enters the chimney establishing suction through the firebox Therefore, when it is working, the furnace becomes completely wild, This looks more or less like an ordinary stove, which is in no way the case, when it rolls. The fuel is good old fashioned coal? It’s old fashioned coal. We start the fire with wood, and switch to coal, when real work has to be done. How long does it take from you strike the first match till it can operate? From completely cold, it’s 3 – 4 hours. We made a test run yesterday, so today it’s .. I think that Carsten…two hours.. then we we are ready to drive. These glass tubes, what is that? It’s a crucial component. As it is known, steam comes from water This is a protective glass shield, in the centre of it there is a circular glass tube, and one can see a bubble in there. That is the water level. In the boiler – and it must never get below, lowest water level shown clearly here.. Because it might blow up, or something? Yes – in theory – it might run dry. At this point there is still 10 centimeters above what is called the roof in the firebox. and the firebox has to get exposed, before it gets critical. It wouldn’t blow up – rather it might get damaged, get spoilt? Down here there is a melting fuse, that melts letting in steam extinguishing the fire, with the engine turning itself off. Water is not something to save on. The device on the top, what is that? The thing that’s starting to vent steam now is the security valvue, because we are not working, with the fire being quite strong at the same time, and it is producing steam, that is just being vented instead. The cylinder and piston is just as on an ordinary engine? It is just like on a stationary engine, as seen on the exhibition in there, yes But the difference is that the steam pressure comes from outside? Pressure is developed outside, and not inside? Yes the pressure steam is made outside, and is lead into the cylinder, pushing back the piston. As opposed to an internal combustion engine where the pressure is created between the piston and the cylinder head. This is also the case here, but it is made externally. In an ordinary combustion engine the gas air mixture is sucked in with a spark igniting it, crating the combustion and pressure. Here the pressure is made in a boiler, a pressure boiler, and from there sent into what is called the combustion chamber in an ordinary engine. The sliders here regulate if it should move forwards or backwards Lets try – actually we can’t as we have a drive belt mounted, and we don’t know what the others are doing. If we move down couldn’t you show me the external parts? This contains the coal, with a water reservoir underneath. This is simply a water container? It’s simply a water container. It can hold 400 liters of water, It can go from here to the water pump, here, driven by the cranckshaft Water simply has to be pumped into the boiler? Alternatively one can send the water in by means of an injector placed on the other side Using steam pressure drawing water with it, shooting it into the boiler This is the steering arrangement, driven by a chain? what about on the other side, if we move round it? This is the feed valve, where water and steam is brought in from the injector It is the security valve hiss we are hearing, with the whistle placed beside it, as is obligatory on every steam engine And the regulator, the one with the balls, swinging out letting in a greater amount of steam keeping the speed constant even when load is applied to the engine. The green unit, is where the piston, or the pistons, I don’t know if there are one or two, sit? There is one piston, with dual action, with alternating steam pressure from both sides of the piston, when it’s a steam engine The big dark unit is the boiler, that generates the steam pressure? The other main unit is placed in here, being the firebox? Inside the boiler there are steam pipes where the fire goes through the pipes and the water out to the chimney, with water around the pipes. That seems understandable – thanks. What is your name? Helge Simonsen, are you the owner? I am the owner – together with my wife. We should get it turning, so you can see it turning. That would be great. It is setup op to pull the sawmill here maybe we will get to see it working An external exhibitor at the Engine Collection in Denmark The Spring Rally, 2017 Surprisingly silent action. It surprises me somewhat, how little noise it makes, but is that because it is idling, or what? No – the only thing making a noise now is the security valves, as we have got an overproduction of steam. We are not doing any work, and have been standing still and now everything is idling, the only thing we are pulling is the saw, but it is not doing any work just now. So it’s more or less soundless. It’s actually soundless. Steam engine. The small belt being crossed is pulled by the crankshaft up to the regulator. The regulator has spinned out to maintain a given speed when idling If it gets a load suddenly, it looses speed, making the regulator balls swing in, opening a bit more for the steam making it pick up speed again. Thank you. That’s okay.