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Review: Sunnytech® Hot Air Stirling Engine Model Educational Toy Sc02
Review of the Sunnytech® Hot Air Stirling Engine Sc02
The Sunnytech Single Flywheel Hot Air Stirling Engine is a well-crafted, fully working model which demonstrates the operational principles of Stirling engines.
What is a Stirling engine?
A Stirling engine is an external combustion engine. That is, it is an engine that gets its energy from an external heat source, in contrast to the internal combustion engine where the heat input is generated within the engine itself.
The Stirling engine was invented in 1816 by Robert Stirling, who wanted to create an alternative to existing steam engines, whose boilers could often explode because of the high steam pressures used and the strength limitations of the materials available to engineers at the time.
How does a Stirling engine work?
Like all heat engines, the Stirling turns heat energy into mechanical energy. The key feature of the Stirling engine is that it uses a fixed amount of gas – usually air – enclosed in a sealed container, with the heat consumed by the engine applied externally. This means that the engine can run on just about any heat source, including coal or gas, solar energy, chemical reaction and nuclear energy. It can also work with very low temperature differentials, which means a Stirling engine could be powered by body heat or even the steam from a cup of coffee. And because it uses heat from a constant source and does not, like an internal combustion engine, rely on a succession of explosive ignitions, the engine runs very quietly.
The heat source used in the Sunnytech Single Flywheel Hot Air Stirling Engine model is supplied by a small methylated spirit burner, which comes included, and the engine’s output is delivered – as the name suggests – by a single flywheel.
The Single Flywheel Hot Air Stirling Engine is robustly constructed from steel, copper and aluminium, and comes fully assembled, which means that you can have it up and running within minutes of taking it out of the box. Just fill the burner with meths, light the wick, let the working fluid (air) heat up for 30 seconds, give the flywheel a spin, and off it goes.
The model’s main features are:
Specification: Single Flywheel Hot Air Stirling Engine
Model No.: SC02
Size: 130mm X 80mm X 115mm
Materials: Aluminium, Copper and Steel
The Single Flywheel Hot Air Stirling Engine is an ideal collector’s item for engineering enthusiasts, as well as an engaging educational demonstration model. Most importantly, it is lots of fun. It should, however, only be used under adult supervision, and it is not suitable for children under 10 years old.
Customer reviews of the Sunnytech Hot Air Stirling Engine are consistently excellent. People who have bought it are particularly impressed by its quality and performance. In today’s world, where everything is made from plastic, the look and feel of a solid, tactile piece of high-quality workmanship is immensely satisfying. It has an elegant design, is well engineered and constructed, and runs like a dream.
Review: Bachmann Branchline 35-077
Review: Bachmann Branchline 35-077
Bachmann has a huge name in the manufacturing industry. The Bachmann Branchline 35-077 is gorgeous Class E railway engine model. The steam engine is a OO Gauge class and has a great design and sturdy construction.
The Class E4 tank steam locomotives were powerful for their size and became stalwarts of passenger, freight and branch work for over 50 years. This model has fantastic detail and would make a great addition to your collection.
Made of steel with a glossy finding to keep it shining
OO gauge with scale 1.76
DCC Ready. 6-pin socket
Route discs and fire lamps
Good runner at a low speed
This product has now been discontinued.
The steam engine is a small model that can be used for modeling purposes in museums or in train industry as well. It is used as a toy as well. It is a great tool to be used in the industry as well as a toy which as to be used under supervision for the kids. It runs at a great speed, the infrastructure is well balanced and easy to operate as well.
This model runs fantastically well out of the box in comparison to many other models on the market, and only continues to improve over time. The sturdy and sleek design and the good performance make it a great piece to be added to your collection.
Model Steam Engines: Explaining Scales
Model steam engines are manufactured according to a variety of scales and gauges. The choice of scale and gauge is crucial as they are the major differentiating factors between the model steam engines. What makes things more confusing is that many model steam engine enthusiasts, and even seasoned fans, often use the two words ‘scale’ and ‘gauge’ interchangeably. However, they are two distinct attributes.
For starters, scale establishes the size relationship between the model engine and the real one. It is often represented as a ratio, such as 2mm:ft or 1:148 scale. This means that every part of the model engine is one-one forty eighth the size of the original steam engine. On the other hand, gauge is an attribute of the railway track. It is the distance between the inner edges of the track rails. Gauge is a more important attribute to consider, when purchasing a model steam engine. Let us understand why by looking at the main gauge types.
O Gauge model engines were produced from the beginning of the 20th century, and were among the most popular models for a long time, until the 1960s. Since then, they have lost their popularity and are difficult to find. They were manufactured in multiple scales from 1:1.48 to 1:43.5. But, they eventually lost their fame to smaller scale models. O Gauge model steam engines are not known for their finer details and accuracy. In fact, they were designed for pre-adults and therefore, cost-effectiveness, and durability were given more importance. Although they are valued by some collectors because of their rarity, most of the collectors and enthusiasts, with an attention to detail, do not prefer these models.
OO Gauge or Double-O Gauge model steam engines belong to a family of model railway systems, which follow the standard gauge model. The OO Gauge has a railway track that is 16.5mm wide, and is built at a scale of 1:76.2 or 4mm:ft. A highlight of OO Gauge models is that they rank very high in terms of realistic appearance and finer details. For this reason, they are of great value to serious collectors. Moreover, many of the manufacturers also place a lot of emphasis on durability and affordability. Naturally, they are among the most popular model steam engine categories today.
G Gauge models are big in size. They are manufactured on a scale range of 1:22.5. Because of their relatively huge size and highly durable construction, they make the best garden railway models. Their extensive use as garden models have led to modern train enthusiasts to believe that the G in G Gauge stands for Garden. The truth is that the G comes from groß, which means “big” in German. Oh yes, the G Gauge models were born in Germany, just like many others. A large scale means that the parts are not as intricate as the other models, say O Gauge for instance. Therefore, they are easy to produce and are readily available.
As you can see, the choice of gauge will be quite obvious to you based on the purpose of your purchase of a model steam engine. If you want a garden mode, then G Gauge is what you need. If you are a collector who enjoys the finer details, then OO Gauge is what does the job for you. However, if you are buying a model engine for your kid, then O gauge is just the thing.
Review: Working Live Steam Mamod 1920’s Red London Omnibus LB1R
Review: Working Live Steam Mamod 1920’s Red London Omnibus LB1R
Oozing in class, this remarkably beautiful London bus throws collectors back to a time gone by. A world renowned icon of England to this day, the red bus of London is forever popular. Mamod does this symbol of London and the history of the British bus justice. Not straying from the real life 1920’s omnibus the model is based on, the LB1R comes in a vibrant red colour, with lovely old fashioned signs painted in yellow and red. The small details of the curved staircase, steering wheel, driver’s seat and engine give this beautiful bus detail, even down to the most minute parts.
Each LB1R is made to order from heavy gauge steel and brass. These heavy materials give the finished piece a weight of 3.8kg. The model’s dimensions are: 455 x 285 x 170mm (not quite as big as a real London bus, but big enough to admire without a microscope!) and come with fuel tables, oil and a funnel (everyone knows how annoying it is to get a gift that needs batteries, without batteries in the box. You won’t have to worry about this with the LB1R). No fear of overdoing it, though! The models are equipped with a pressure safety valve. If you’re still worried about the safety of the model, rest assured, Mamod’s switch from old fashioned methylated spirits to solid fuel tablets means that running the London steam bus is safer now than ever. The first time you’ll use the product is simple too! No faffing around, and with this particular model in the wide range of Mamod models available, no assembly is required. Just add water and off it goes. Every single omnibus is hand crafted with expertise in England.
This model is a perfect gift for a man who you would ordinarily spend hours pondering over about which gift to buy for them. The LB1R is unique – how many other men can say they were gifted a live working steam London Omnibus? Men who will enjoy this gift in particular are ones who enjoy history and English culture, men who are interested in a range of vehicles, men who appreciate finely crafted models, those who you think welcome a new hobby and last, but most certainly not least, those who are avid hobbyists and would love to extend their collection of exquisite models. Children will also benefit from this little slice of history, but bear in mind that due to the fuel and steam, it isn’t suitable for those under 14 years old to use without adult supervision.
Due to its precise craftsmanship and good quality materials, Mamod’s LB1R London bus is made to last, making it a worthy investment. Just as the real London bus has transcended through years of history and time, your own model will bring about years of delight through generations of your family. This is definitely one to be passed down from grandfather to grandson, giving the piece sentimental value, as well as monetary value.