Twin Cylinder 'USE' Unit Steam Engine

Twin cylinder Unit Steam Engine. The basic USE engine is designed to be configurable into different layouts of engines. The USE model steam engine is ideally suited for use in model steam boats.
A single cylinder USE engine can be seen in my video here:
• USE Unit Steam Engine
A four cylinder variant of the USE engine can be seen in my video here: • 4 Cylinder Steam Engin...
A USE steam plant can be seen in my video here:
• USE Marine Steam Plant