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Upper Mantle
The upper part of the outer mantle
serves as fuel reservoir. The
volume of this part determines the
operating time with one fuel fill.
The dimensions in the drawing are
based on the following values:
If a longer operating time is needed greater dimensions for the height and the diameter of the reservoir can be selected. The fuel reservoir consists of two coaxial steel cylinders. The outer one is made of steel. The inner one is made of sheet metal. The inner radius of the outer cylinder is 10 mm greater than the radius of the inner cylinder. The upper end of the inner cylinder is connected to the outer cylinder with gas tight connection to reduce the amount of out-coming gas when opening the lid. Inside the outer cylinder there is also a funnel for guiding the fuel flow.
Translated by Olli.
