Jensen 85 Model Steam EngineThe fastest RPM dry fueled engine we make, and with its 2 1 8 x 4 1 4 boiler, it is also the smallest. Although you can hold it in the palm of your hand, its speed and power is remarkable. Note: All fuel fired Jensen steam engine fireboxes discolor after FIRST use. They are NOT painted with high temperature paint or powder coating. Click on picture for large view. Don't forget the Esbit Fuel and the Steam Oil! See Bottom of Page. THIS IS NOT A TOY! As