Jensen 70 Model Steam EngineThe highest RPM engine we make. Unique, vertical, double acting oscillating cylinder engine with a 2 1 2 x 6 boiler, 3 speed pulley, 400 watt heater. Our most requested engine for the school sciences, physics & fun! Includes pop valve, whistle and throttle. ELECTRIC VERSION THIS IS NOT A TOY! As it involves a flame it is not for use by anyone under the age of 14.

Jensen and his Son and factory tested to insure maximum performance

Since our founding

spring loaded safety valve

Jensen in 1948

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Jensen Safety Valve

Clutch engaged gear wheel

Now pop the attached Hayco into the hole on the smoke stack support

In addition to the many 100's of educational learning experiments of the steam engine

Smoke stack for Wilesco D 11

brass for Wilesco D 21

for flywheel axle for Wilesco D 320