Model of a river paddle steamer "bohemia". young model designer
We bring to the attention of ship modellers model paddle steamer "BURLAK" - similar cargo-passenger ships at the end of the 19th century were widespread on the rivers of Siberia. The length of this steamer was 48 m, width - 8.25 m and draft with a full load - 1.25 m.
Rowing wheels, driven by a steam engine with a power of 120 hp, provided the steamer with a speed of about 10 miles per hour. The ship's hull was recruited from rectangular frames with rounded cheekbones. At the rear of the hull was a rudder consisting of a wooden feather fixed in a forged steel frame. The feather was attached to the crinoline with a chain sorlin.
In the bow of the vessel, a manual anchor-mooring capstan was installed, which was used to select the sheima (anchor chain) and mooring ropes. Anchors of the Admiralty type with steel rods were attached to steamboat in a marching way - on fish beams with hoists and hooks. In the same place, in front of the spire, a bollard was fixed, designed to tow the ship. Mooring bollards were located two on each side - in the bow and stern of the vessel.
The steamship was propelled by rowboats. wheels partially submerged in water. Each of the wheels consisted of a hub, rings and spokes - eight wooden plates were fixed between the latter. Deck level rowing wheels edged with run-outs; from above, the wheels were closed with side metal casings. Open navigation bridges were installed on top of the casings. Service rooms were also built on the ramparts.
In the central part steamer, between the paddle wheels was the engine room, and behind it was the boiler casing. Passenger cabins of the first and second classes were located on the deck. In front of the ship, above the cabins, a promenade deck was arranged; along the railing, benches were installed on it - three from each side. Two ladders were intended for access to the promenade deck.
The wheelhouse was located in the central part of the vessel. Behind the aft cabins was the drive compartment, closed on top with a wooden grate; drive steering cables were carried into the wheelhouse along the boxes, along the starboard and port sides. Craft steamship model"Burlak" is not too difficult.
The recommended scale is 1:50, while the length of the "wheel" will be 960 mm - this will be quite enough for both a running model (with or without radio control) and a bench model. Almost all parts of the hull and superstructures can be made of birch plywood with a thickness of 3 to 5 mm. Paddle wheel disks are also sawn out of 3 mm plywood, plates are cut from beech slats, and hubs are machined from birch. The assembly of all plywood elements is carried out on epoxy glue; after its polymerization and stripping, the prepared assembly units are covered with parquet varnish.
A deck is glued into the finished hull, made whole with 4 mm thick plywood sheathing. Cutouts for superstructures should be provided in the deck (through them access to power plant model and radio equipment), as well as under the paddle wheels.
The paddle wheel guards are cut from 0.5 mm thick aluminum sheet. On the deck of the model, bow and stern mooring bollards, an anchor device, as well as an anchor-mooring capstan are fixed. A chimney is installed behind the wheelhouse - its body is best soldered from 0.3 mm thick tinplate.
The bases of the ventilation deflectors can be made from the same material, and the air intakes for them can be made from plastic balls from children's toys that are suitable in diameter. The power plant of the ship model is made on the basis of the MU-30 electric motor (its operating voltage is 27 V, current consumption is 5 A, power is 40 W, rotation speed is 7500 rpm). To drive the paddle wheels, a self-made two-stage gearbox with a gear ratio of about 20 is used, which provides a speed of rotation of the paddle wheels of 375 rpm.
Of course, it is difficult to make gears on your own in a home workshop, so the design of the gearbox will have to start with the selection of two cylindrical gear pairs with a module of 1.5 - 2 mm and with gear ratios of 4 and 5. The parts of the gearbox housing are cut from sheet duralumin, steel shafts, turned, gears and gears are pressed onto them and fixed with 1mm pins, which provides reliable protection against rotation.
Bronze bushings pressed into the base and housing cover are used as plain bearings. Recommended painting steamer models: hull below the waterline, rudder and paddle wheels - red; board above the waterline, bulwarks, bollards, capstan, anchor chains, anchors, ventilation deflectors and fenders - black; mast, superstructures, paddle wheel covers above the bulwark, fish beams, wheelhouse, name of the ship, lifebuoys, railing, awning, vestibule, racks, rack and fire buckets, as well as benches - white; ladders, decks, ceilings of side superstructures, paddle wheel casings and fenders - light gray; doors, frames of rectangular portholes of superstructures and deckhouses - natural wood.
I.TEREKHOV
Commodity-passenger paddle steamer"BURLAK": 1 - flagpole; 2 - aft cabins; 3 - towing arch; 4 - transition ladder; 5 - towing hook; 6 - chimney; 7 - steam whistle; 8 - wheelhouse; 9 - paddle wheel casing; 10- lifebuoy; 11 - railing; 12 - promenade deck; 13- shrouds; 14 - mast; 15 - bow cabins; 16 - vestibule of the entrance to the bow rooms; 17 - porthole; 18 - headstay; 19 - mooring bollard; 20 admiralty anchor; 21 - towing bollard; 22 - anchor chain (sheima); 23 - anchor-mooring capstan; 24 - rectangular porthole; 25 - fender; 26 - wooden fender; 27 - paddle wheel; 28 - skid brackets; 29 - grate above the tiller drive; 30 - rudder feather; 31 - open bridge; 32 - side fire; 33 - ladder; 34 - ventilation deflector; 35 - superstructure on the run-out; 36 - bench: 37 - rack with fire buckets; 38 - sorlin, 39 - fish beam. On the right - individual elements of the model of the ship
The power plant of the steamer model: 1 - electric motor MU-30; 2 - gearbox mount (M5 bolt with nut); 3¬¬¬¬¬ ¬¬- gearbox housing (duralumin, sheet s4); 4 - fixing the gearbox cover (M5 bolt with nut); 5 - primary gear of the gearbox; 6 - gear wheel of the first stage; 7 - gear of the second stage; 8 intermediate shaft; 9.17 - bushings-bearings of the intermediate shaft (bronze); 10 - gearbox cover (duralumin, sheet s4); 11.16 - bushings-bearings of the propeller shaft (bronze); 12- propeller shaft (steel); 13.15 - spacer bushings (steel); - gear wheel of the second stage
Running model of a paddle steamer. The model of a river paddle steamer looks just as advantageous compared to the model of a modern passenger liner how much more attractive a large-scale copy of a steam locomotive is than a copy of a railway locomotive of our days. And on the water, the running model of the “wheel” of the 19th century looks simply amazing - an abundance of superstructures, masts, pipes, sensible things - all this creates an indescribable flavor of the age of steam.
We bring to the attention of ship modellers the model of the paddle steamer "BURLAK" - similar cargo-passenger ships at the end of the 19th century were widespread on the rivers of Siberia. The length of this steamer was 48 m, the width was 8.25 m, and the draft with a full load was 1.25 m.
The ship's hull was recruited from rectangular frames with rounded cheekbones. At the rear of the hull was a rudder consisting of a wooden feather fixed in a forged steel frame. The feather was attached to the crinoline with a chain sorlin.
In the bow of the vessel, a manual anchor-mooring capstan was installed, which was used to select the sheima (anchor chain) and mooring ropes. Anchors of the Admiralty type with steel rods were attached to the steamer in a marching way - on fish beams with hoists and hooks. In the same place, in front of the spire, a bollard was fixed, designed to tow the ship. Mooring bollards were located two on each side - in the bow and stern of the vessel.
1 - electric motor MU-30; 2 - gearbox mount (M5 bolt with nut); 3 - gearbox housing (duralumin, sheet s4); 4 - fixing the cover of the reducer (bolt M5 with a nut); 5 - primary gear of the gearbox; 6 - gear wheel of the first stage; 7- gear of the second stage; 8 - intermediate shaft; 9.17 - bushings-bearings of the intermediate shaft (bronze); 10 - gearbox cover (duralumin, sheet s4); 11.16 - bushings-bearings of the propeller shaft (bronze); 12 - propeller shaft (steel); 13.15 - spacer bushings (steel); 14 - gear wheel of the second stage
The steamer was propelled by paddle wheels partially submerged in water. Each of the wheels consisted of a hub, rings and spokes - eight wooden plates were fixed between the latter. At deck level, the paddle wheels were edged with sheaths; from above, the wheels were closed with side metal casings. Open navigation bridges were installed on top of the casings. Service rooms were also built on the ramparts.
In the central part of the steamer, between the paddle wheels, there was an engine room, and behind it was a boiler casing.
Passenger cabins of the first and second classes were located on the deck. In front of the ship, above the cabins, a promenade deck was arranged; along the railing, benches were installed on it - three from each side. Two ladders were intended for access to the promenade deck. The wheelhouse was located in the central part of the vessel.
Behind the aft cabins was the tiller drive compartment, closed on top with a wooden grate; drive steering cables were carried into the wheelhouse along the boxes, along the starboard and port sides.
It is not too difficult to make a model of the Burlak steamship. The recommended scale is 1:50, while the length of the "wheel" will be 960 mm - this will be quite enough for both a running model (with or without radio control) and a bench model.
Almost all parts of the hull and superstructures can be made of birch plywood with a thickness of 3 to 5 mm. Paddle wheel disks are also sawn out of 3 mm plywood, plates are cut from beech slats, and hubs are machined from birch. The assembly of all plywood elements is carried out on epoxy glue; after its polymerization and stripping, the prepared assembly units are covered with parquet varnish.
A deck is glued into the finished hull, made whole with 4 mm thick plywood sheathing. The deck should be provided with cutouts for superstructures (through which access to the power plant of the model and radio equipment is provided), as well as for paddle wheels. The paddle wheel guards are cut from 0.5 mm thick aluminum sheet.
On the deck of the model, bow and stern mooring bollards, an anchor device, as well as an anchor-mooring capstan are fixed. A chimney is installed behind the wheelhouse - its body is best soldered from 0.3 mm thick tinplate. The bases of the ventilation deflectors can be made from the same material, and the air intakes for them can be made from plastic balls from children's toys that are suitable in diameter.
1 - flagpole; 2 - aft cabins; 3 - towing arch; 4 - transition ladder; 5 - towing hook; 6- chimney; 7 - steam whistle; 8 wheelhouse; 9 - paddle wheel casing; 10 - lifebuoy; 11 - railing; 12 - promenade deck; 13 - guys; 14 - mast; 15 - bow cabins; 16 - vestibule of the entrance to the bow rooms; 17 - porthole; 18 - headstay; 19 - mooring bollard; 20 - Admiralty anchor; 21- towing bollard; 22 - anchor chain (sheima); 23 - anchor-mooring capstan; 24 - rectangular porthole; 25 - fender; 26 - wooden fender; 27 - paddle wheel; 28 - skid brackets; 29 - grate above the tiller drive; 30 - rudder feather; 31 - open bridge; 32 - side fire; 33 - ladder; 34 - ventilation deflector; 35 - superstructure on the run-out; 36 - bench; 37 - rack with fire buckets; 38 - sorlin, 39 - fish beam. Separate elements of the ship model
The power plant of the ship model is made on the basis of the MU-30 electric motor (its operating voltage is 27 V, current consumption is 5 A, power is 40 W, rotation speed is 7500 rpm). To drive the paddle wheels, a self-made two-stage gearbox with a gear ratio of about 20 is used, which provides a speed of rotation of the paddle wheels of 375 rpm.
Of course, it is difficult to make gears on your own in a home workshop, so the design of the gearbox will have to start with the selection of two cylindrical gear pairs with a module of 1.5 - 2 mm and with gear ratios of 4 and 5. The parts of the gearbox housing are cut from sheet duralumin, steel shafts, turned, gears and gears are pressed onto them and fixed with 1mm pins, which provides reliable protection against rotation. Bronze bushings pressed into the base and housing cover are used as plain bearings.
Recommended painting of the steamer model: hull below the waterline, rudder blade and paddle wheels - red; mast, superstructures, paddle wheel covers above the bulwark, fish beams, wheelhouse, name of the ship, lifebuoys, railing, awning, vestibule, racks, rack and fire buckets, as well as benches - white; ladders, decks, ceilings of side superstructures, paddle wheel casings and fenders - light gray; doors, frames of rectangular portholes of superstructures and deckhouses - natural wood.
The hull of this steamship model is a flat plank of a streamlined shape. The front end has a traditional point for ships and boats, which reduces water resistance when moving forward, and the stern of the hull is simply cut off in the transverse direction. A tin rudder is installed here.
The easiest option for attaching it is by cutting into a previously made slot in the stern. By bending or bending it, you can launch the boat in a circle or change direction. In the front and rear parts of the hull, two studs are driven in: these are support pins, a deck is installed on them. Wide cutouts are made on the sides of the ship's hull - for a paddle propulsion unit.
Propulsion model paddle steamer
It is mounted on two flat tin brackets attached in cutouts. The propeller consists of two wheels with blades and an axle. Wheel hubs - two wooden rounds (or corks), along the circumference of which slots are cut for the blades of tin. The wheels are protected by tin arches attached to the body cutouts.
To bring the wheels into rotation, a rubber motor is mounted on the body. For him, pulleys (rollers) are installed along the middle line of the body in its front and rear parts, through which a thin elastic band is pulled. One end of it is attached to the front of the body, and the other - on the axis of the blade mover.
By rotating the latter, the rubber band is wound around its axis: this is how the rubber motor is started. If you now release the wheel, the rubber band will begin to unwind, causing the wheels with blades to rotate through the axle.
Deck of a model paddle steamer
It is hollow to cover all the protruding parts of the body. Cut out from tin. Figure 1 shows a pattern of the deck of a steamer: at the cut-out blank, the shaded places are bent - from them the bow and stern parts of the deck are formed.
On the places marked on the pattern with a dotted line, the actual deck superstructure is installed. It can also be made of tin; but it is easier to assemble it from wooden elements: a flat plank platform, a cabin-house and two pipes (really from tubes or pieces of a round wooden rod). Styrofoam may be suitable as an affordable and convenient material for superstructure elements.
Any pencil can serve as a mast for this ship, and harsh black threads can serve as streamers. The deck is installed on the hull pins intended for it and additionally rests with its cutouts on the sides on the axis of the bladed propeller.
Coloring of paddle steamer model
The wooden blank of the model body is best protected from getting wet by oil paint. It can be applied with a brush, in two layers: the first is the most liquid, for better impregnation of the wood surface, and the second is of normal consistency, of any color: after all, the hull is practically invisible from under the deck shell.
To paint the rest of the elements of the model of the steamer, it is convenient to use aerosol cans, and the paint can be different: the boat will turn out more elegant, more beautiful. Aerosol coating is easier to apply, better adheres to any material - both metal and wood, forming a thin and light paint layer that is not burdensome for a small model.
Each element of the model can be painted separately, as it is being made, that is, even before assembly. However, if it is decided to finally paint the model after assembly with one color, the preliminary element-by-element coating of parts can be omitted and an aerosol can can be used already on the finished model.
Launch of paddle steamer model
Preparation for the launch of the boat comes down mainly to pulling the rubber motor. To do this, it is not necessary to raise the deck: access to the rubber motor is carried out from the outside, through a paddle mover. It is enough to take the model in the left hand, and insert the index finger of the right between the propeller blades and rotate it. W
you need to spin the mover at any position of the boat in your hand from its bow - then the rubber motor will spin the blades in the right direction. Then, holding the propeller blades with your left hand, lower the model into the water so that they are submerged in the water: you can, by adjusting the steering wheel to the desired course, release the boat on its first voyage. Its range will depend on the degree of twist of the rubber motor.
Rice. 1. Model of a paddle steamer: 1-deck; 2-deck superstructure with pipes and deckhouse; 3 - body; 4 - support pin (1x25.4 pieces); 5 - impeller hub; 6-blade; 7 - rubber motor (L650); 8 - wheel guard arc; 9 - cutout of the housing for the mover; 10-rudder; 11 - rubber motor pulley (2 pcs.); 12--pin-clamp rubber motor (L15); 13 - wheel bracket. A - deck pattern
Rice. 2. Installation diagram of the rubber motor: 1-propulsor bracket (2 pcs.); 2-driver; 3 - fencing mover; 4 - gum; 5 - pulleys (rollers); 6 - axis of the mover; 7 - steering wheel
A navigator lives in the soul of every boy, so any rain stream is already a river, and a large puddle is a whole sea that calls to launch boats - from the simplest, from a piece of wood or a sheet of paper, to specially planed ones, and even more so such combined ones, as offered by a German magazine " Technium" self-propelled steamship model. Yes, not an ordinary steamer, but an old, two-pipe, with paddle wheels on the sides. What child would not want to build one, especially since its design is quite accessible for independent reproduction.
Indeed, all the parts are so simple that they can be made and assembled in one evening. Judge for yourself. The model consists, in essence, of two large parts: a hull with a propeller and a deck superstructure. And what components they are divided into - we will consider in more detail.
Frame
It is a flat board with a streamlined shape. The front end has a traditional point for ships and boats, which reduces water resistance when moving forward, and the stern of the hull is simply cut off in the transverse direction. A tin rudder is installed here. The easiest option for attaching it is by cutting into a previously made slot in the stern. By bending or bending it, you can launch the boat in a circle or change direction.
In the front and rear parts of the hull, two studs are driven in: these are support pins, a deck is installed on them. Wide cutouts are made on the sides of the hull - under the blade mover.
mover
It is mounted on two flat tin brackets attached in cutouts. The propeller consists of two wheels with blades and an axle. The wheel hubs are two wooden rounds (or corks), along the circumference of which slots are cut for the blades of tin. The wheels are protected by tin arches attached to the body cutouts.
Rice. 1. Model of a paddle steamer (click to enlarge): 1 - deck; 2-deck superstructure with pipes and wheelhouse; 3 - body; 4 - support pin (1x25.4 pieces); 5 - impeller hub; 6 - blade; 7 - rubber motor (L650); 8 - wheel guard arc; 9 - cutout of the body under the mover; 10 - steering wheel; 11 - rubber motor pulley (2 pcs.); 12 - rubber motor fixing pin (L15); 13 - wheel bracket. A - deck pattern
To bring the wheels into rotation, a rubber motor is mounted on the body. For him, pulleys (rollers) are installed along the middle line of the body in its front and rear parts, through which a thin elastic band is pulled. One end of it is attached to the front of the body, and the other - on the axis of the blade mover. By rotating the latter, the rubber band is wound around its axis: this is how the rubber motor is started. If you now release the wheel, the rubber band will begin to unwind, causing the wheel with blades to rotate through the axle.
Deck
It is hollow to cover all the protruding parts of the body. Cut out from tin. Figure 1 shows a deck pattern: at the cut blank, the shaded places are bent - from them the bow and stern parts of the deck are formed.
On the places marked on the pattern with a dotted line, the actual deck superstructure is installed. It can also be made of tin; but it is easier to assemble it from wooden elements: a flat plank platform, a cabin-house and two pipes (really from tubes or pieces of a round wooden rod). Styrofoam may be suitable as an affordable and convenient material for superstructure elements. Any pencil can serve as a mast, and harsh black threads can serve as stretch marks.
The deck is installed on the hull pins intended for it and additionally rests with its cutouts on the sides on the axis of the paddle propeller.
Coloring
The wooden blank of the model body is best protected from getting wet by oil paint. It can be applied with a brush, in two layers: the first is the most liquid, for better impregnation of the wood surface, and the second is of normal consistency, of any color: after all, the hull is practically invisible from under the deck shell.
To paint the rest of the elements of the model, it is convenient to use aerosol cans, and the paint can be different: the boat will turn out more elegant, more beautiful. Aerosol coating is easier to apply, better adheres to any material - both metal and wood, forming a thin and light paint layer that is not burdensome for a small model.
Rice. 2. Scheme of rubber motor installation (click to enlarge): 1 - propeller bracket (2 pcs.); 2 - mover; 3 - fencing mover; 4 - gum; 5 - pulleys (rollers); 6 - axis of the mover; 7 - steering wheel
Each element of the model can be painted separately, as it is being made, that is, even before assembly. However, if it is decided to finally paint the model after assembly with one color, the preliminary element-by-element coating of parts can be omitted and an aerosol can can be used already on the finished model.
Model start
Preparation for the launch of the boat comes down mainly to pulling the rubber motor. To do this, it is not necessary to raise the deck: access to the rubber motor is carried out from the outside, through a paddle mover. It is enough to take the model in the left hand, and insert the index finger of the right between the propeller blades and rotate it. It is necessary to spin the mover at any position of the boat in the hand from its bow - then the rubber motor will spin the blades in the right direction.
Czech magazine "ABC" The topic brought to the attention of ship modellers today, I think, will be of interest to copyists of various levels, from schoolchildren building contour rubber-motor “straight-propelled vehicles” to experienced radio operators. The fact is that we offer a steamer with paddle wheels for reproduction in miniature - modelers-shipbuilders do not need to tell in detail about the “tastyness” of such work.
As a prototype for copying, one of the most elegant river steamers of the last century, the Czech-built Bohemia, created in 1841, was chosen. Together with efficiency appearance this ship is also characterized by comparative simplicity, which by no means harms the copy version of the model.
A copy of "Bohemia" can be made not only for use in various sports classes, but also in different designs. So, for example, a hull of a rather large elongation with diverse contours of the bow, central and aft parts is well reproduced both in the classic version with a frame set and sheathing of precisely fitted lime or balsa rails, and in the shell, made of fiberglass on a blank. It is not a sin to recall such an option as making the whole hull from a single block of wood, followed by gouging to obtain a wall thickness of 2-3 mm, followed by the installation of sparsely located frames. Despite the exaggeration of such technology, which is more typical for school ship models, when copying the Bohemia with its wide low hull, such a technique is quite justified, even if a high-quality model is created.
Having determined the scale of copying, it is necessary to draw the main projections of the model in full size and arrange the “stuffing” of the case. To help those who are thinking of doing such a micro-steamer, we present the layout of the most complex option - a model with a length of only 720 mm, with radio control. As you can see in the pictures, even with such a small size, all nodes are placed quite freely in the case, so when creating a larger copy, there should be no problems at all.
With a given scale, the deck is easiest to make integrally removable by gluing a blank for it from separate pine or lime slats with a section of 2x4 mm. The drive of the model - from a conventional unforced electric motor for a voltage of 3-4.5 V - is quite sufficient in terms of power for a large-scale travel speed. The gear reducer, unlike the prototype, is still better placed inside the housing. It should have a gear ratio of about 1:10. The single shaft of the propeller wheels is made of steel wire with a diameter of 4 mm and on the copy passes through two bronze bearings installed in the side bosses directly below the deck.
The materials for the manufacture of the paddle wheels themselves can be very different. Let's name only two main options: solid wood, using plywood "rims", rails and plates, and all-metal. In the latter case, in addition to steel or brass wire, you will also need to find suitable sheet blanks for rowing plates. In the same way, various designs are also possible when working on the rudder and on its drive.
Superstructures and all nodes located on the deck are best mounted tightly. Celluloid must be recognized as the main material for bulk superstructures, although “boxes” made of plywood, textolite or even cardboard will turn out a little worse (the latter will have to be soaked through with warm drying oil). Fences and awning posts are made of wire and assembled by soldering. For small parts, the most simple work and good appearance will ensure the use of solid wood. The final external effect will depend on the quality of the finish, varnishing and painting. The case in the hollowed version is impregnated with drying oil or liquid two-component parquet varnish, after which it is painted.
Driving performance miniature "Bohemia" is very good. True, it must be admitted that for such a copy it is still better to have a water area surface with a small wave. After the start, the model quickly accelerates and, despite the large elongation of the hull, responds quite “briskly” to rudder deviations. With the specified copy scale, the weight of a fully equipped model should be in the range of 1000-1100g.
DESCRIPTION OF THE STEAM SHIP “BOHEMIA”
The ship's hull is divided by bulkheads into the following compartments (starting from the bow): open bow compartment 5.35 m long, galley - 1.5 m, second-class saloon - 6.3 m, crew cabins and storage rooms - 3.3 m, engine room compartment and boiler room - 5.85 m, crew cabins - 1.5 m, powder room (cabin) - 3.6 m, first class passenger compartment - about 10.6 m. Toilets were located in superstructures located directly in front of the paddle wheel casings . The deck served for passengers to walk - if necessary, benches were installed on it. The back of the deck could be covered with a canvas awning stretched over the side posts.
The hull of the steamer, the superstructure and the casing of the paddle wheels are made of wood: only the side and bottom frames were made of iron corner profiles. As can be seen from the above figures, Bohemia had an unusually elongated hull with an almost rectangular section in its central part and rounded contours in the bow and stern. The coefficient of completeness of displacement is 0.65. The front part of the keel elegantly curved upwards, forming at the end a base for the installation of a bow figure - a Czech lion painted with silver paint with a golden royal crown on its head. The total length of the bow figure was approximately 0.9 m. The aft part of the hull is sheer. She carried a 1.6 m long rudder plate suspended on three hinges.
"Bohemia" was equipped with a two-cylinder steam engine with tilting cylinders, vertically arranged. The cylinder diameter is 0.525 m, and the stroke is 0.725 m. At 40 rpm, the engine developed a power of 37.5 kW (51 hp). The steam engine was supplied steam condenser and a reversal system. It was made in England and was very perfect for its time. It is interesting that after the Bohemia this machine served for a long time on another steamer, and there are suggestions that it still works on the steamer " Dizbar".
The steam boiler was made by the same company that built the steam engine. The working steam pressure is 1.33 atm. Inside the boiler with three furnaces with a combustion area of about 35 m 2, 165 copper tubes with a diameter of 54 mm were placed, connected in three bundles. The products of fuel combustion passed between these tubes, heated the water and were released into the atmosphere through a chimney about 4.5 m high. The design of the tube was an assembly of five sections, and between the second and third there was a connector that low bridges. The system for lowering and raising the pipe is a chain hoist, using blocks and ropes going to a foldable mast.
The steam engine drove the side paddle wheels through a gear transmission with a gear ratio of 1:1.5, and the drive gears were located outside the body in the volumes of the paddle wheel casings. The iron rims of the paddle wheels had an outer diameter of about 4.1 m and the lower edge was equal to the level of the lower point of the bottom of the hull. 12 propeller blades on each wheel were screwed to the metal spokes, their size was 0.35x1.6 m. The casing with an outer diameter of 2.15 m and a width of 1.95 m had waterproof walls, except for the outer ones, which were wooden gratings.
The wooden rudder was powered by cables running from the steering wheel through a pulley system. On the axis of the wheel, the diameter of which was equal to 1.5 m, there was a leading drum with a cable. A special platform was equipped for the helmsman, which allowed him to have a forward view of the water area.
The Admiralty-type anchor, about 1.2 m long, was raised manually and in the stowed position lay freely on the starboard side of the front of the hull.
To carry the flag and place the mechanism for folding the chimney, a large mast 9 m high was installed in front of the steamer. It also folded back, for which two cables were used, going from the mast forward and to the port side. To carry the stern flag, a rigid flagpole was installed in the rear of the hull, the height of which is 3.3 m.
The rear passenger compartment (first class) was illuminated by five windows on each side, the front (second class) - by two pairs of windows. Each of them was a three-section opening with glasses with a total size of 0.6x1.8 m. Two windows were located on the front wall of the hull to brighten the galley; skylights were installed over the engine room and crew quarters. The captain's bridge with rigid handrails is mounted between the casings of the paddle wheels - a gangway led to it from the deck. Ahead of the deck was a conductor's bench, in front of which a bell was hung on a curved bracket. In the same place, a chimney from the galley and a pipe for removing steam from the safety valve of the boiler came out nearby.
The side skin of the hull was protected by four overhead strips. The lowest was located almost above the waterline; the next one ran along the lower edge of the portholes, and along their upper edge - another plank. The fourth, the last, walked along the edge of the deck.
During crossings on Czech territory, a red flag with narrow white horizontal edges and a silver Czech lion in the middle was hoisted on the stern flagpole. On the territory of Hungary, the flag was replaced by a red-white-red with a shield. The mast carried a long white-red-white pennant with the name of the steamer in white. On the inner walls of the paddle wheel casings there was a small Hungarian emblem (a double-headed eagle with a shield).
The bottom of the hull and the bottom of the port, including the bottom trim strips, were dark brown. The strip between the windows, the frames of the windows, the deck railings of the entrances, the casing of the paddle wheels (excluding gratings), the overhangs, the railings, the mast, the flagpole, the cases of the skylights were painted white. Red: upper three rows of overlays and paddle wheels. Black were the anchor, the upper casing of the steam boiler, all chimneys and parts of the frames visible in the open front of the hull. The deck, the captain's bridge, the conductor's bench, the steering mechanism with the bridge and the rudder feather had the color of natural, impregnated with drying oil, wood. The paddle wheel grilles and the stripes above and below the portholes were painted dark green.
