Valve controlled steam engine Isabel

Valve controlled steam engines certainly belong to the most impressive machines. Since the control of the valves is attached to the outside of the cylinder, the process can be observed very well. The number of moving parts is further increased by the centrifugal governor. A slowly running valve-controlled steam engine with a centrifugal regulator is a high-end for every model builder.

With this material kit you get as usual all necessary parts around this beautiful valve-controlled steam engine. All milling parts are already milled. All the rotating parts are supplied as a raw material to the kit and must be manufactured by you according to the drawing.

A valve-controlled steam engine has a particularly impressive control. The distribution of the steam is not controlled via a compact valve but via 4 individual valves. Each valve has its own eccentric. In our machine the centrifugal governor controls the speed by accessing the linkage of the valves and limiting their working distance.

The model:

With this material kit for the valve-controlled steam engine "Isabel" you can build up a very complex valve-controlled steam engine. The kit has a stable machine base made of steel sheet. A majority of the machine parts are made of brass. The 4 eccentrics of the steam engine are driven by 2 brass bevel gears. The centrifugal governor is driven via 2 helical gearwheels. With it the speed of the steam engine can be regulated.

The cylinder of the valve-controlled steam engine is made of brass, the piston and plain bearing bushings are made of bronze. The 140mm flywheel is made of a very clean cast cast steel. The base plate is a laser blank made of 1.5 mm steel sheet which can be easily bent by hand. All other parts are made of brass, as has been proven in steam model construction.

The following is required for the construction:

For the construction of the horizontal steam engine, a lathe, a small drill and a gas burner for soldering are required. In addition, there is still hand tools, which should be located in every "steam machine workshop" (taps M2, M3, M5x0.5, M6x0,75, M10x1 / cutting edge M2, M3x0.5, M6x0,75, M10x1 / Reamers 3H7, 4H7 , 8H7, / files, drill set).

You can find more information on the construction of this steam engine in our model magazine. You will find in our magazine a building report of the lying valve-controlled steam engine "Isabel" with many pictures and explanatory texts. Thus, you can inform yourself about the construction in advance as well as during the construction phase to find suggestions and support.

Included in the delivery are:

• Finished CNC milled milling parts
• Raw material for the turned parts
• Raw casting for the flywheel
• Laser cutting for base plate
• All required screws, model tree nuts and springs
• 1 set of bevel gears, 1 set of oblique toothed gears
• Drawings Valve-controlled steam engine "Isabel" (18 sheets) and construction manual (7 sheets)

Dimensions of model steam engine "Isabel":

• Height with base plate: 170mm
• Length with base plate: 250mm
• Width with base plate: 420mm
• Diameter of pistons: 20mm
• Flywheel D .: 140mm
• Stroke: 36 mm
• Weight of finished machine: 4.4 kilos