Steam model originated in England during the
nineteenth century, attained its success peak after the Second World War
and it is in these days at the declining phase. Steam powered toys date
back as far as the 1930’s and 1960’s, but not with the same level of quality
as today. It is a typical activity of the English speaking people, although
it is less practiced by other peoples mainly in France, they still possess
There are four firms in England and two in
France that supply material in order to build this type of steam engines.
It is thus evident that the market is very restricted. In the past there
were more experts in this field. However at the moment, there are possibly
only about five hundred people worldwide that are capable of doing such
type of work.
The material available for those who want
to have an adventure consists of: plants with complete drawings, many sheets
of blue print, a descriptive manual explaining how to use the
parts, a collection of photographs of both the original and model, characteristics
of the performance, guidelines on how to execute the tests and the pattern
of colors in which the originals were painted, either in a descriptive
form or in the catalogue of real colors.
The artisan needs to have the following equipment: mechanical lathe, if possible with a gear box, miller, bench drill, ribbon saws for metals, painting equipment, soft and hard soldering equipment. Handcraft tools such as saw for metals and jeweler saw, drill set of 0,4 up to 6 mm from tenth to tenth millimeters, taps and dices from 1 to 10 mm or equivalent in inches, always with a fine thread and if possible from the following patterns: BA, Tury, ME and cycle. Only the fine threads. The SAE or Withworth shell not be used.
The model that is illustrated is known as “Allchin” a classic from the English model engineer and it represents, the finest existence of a traction engine. It’s the agricultural version, it also exists in the groundwork version and in the urban one, which were known as steam roller or compactors cylinders. Only the urban version existed in Brazil and is still found in some inland town square as a monument or as a curios steam car. One of them is a rare piece that was used to tar the city at the beginning of the twentieth century.
Mr. Edmar Mammini constructed the illustrated model between 1995 and 1998. This model was selected because it had an English pattern of work quality. It can be better explained in the sense that, in England when you say that you have built an “Allchin” you will be regarded as someone that has reached the top of model making, at the same level as the person who constructed the Britannia (a locomotive) , but this art piece weighs 150 kg and “Allchin” only weighs 35 kg. This makes a great difference in terms of weight, for someone who always makes models in his own workshop without help of someone.
The model was constructed with the above mentioned materials, only part of the castings came from England, the majority were done in the model workshop in São Paulo. The complete kit was not acquired, not to reasons relating to the price, but because of the inconvenience of the kit´s weight.
The total weight is about 50 kg. that includes
the castings and the boiler´s main tube that is in copper and with
a uncommon measure that does not exist in Brazil, 3” and ¾ “ .The
kit and plants cost approximately 2.000,00 US$, and a ready-made machine
has already attained the incredible amount of 47.000 US$ in an auction
at Sotheby´s in New York as a museum art piece.