Although demonstrating feasibility, it was, underpowered, unresponsive, mechanically complex and susceptible to reliability problems.

Simple economics would drive the expensive, balky and mechanically complex DC dynamos to their ultimate extinction.

However, some newer model helicopters remove this mechanically complex separation of functionalities by using three interdependent actuators that can each move the entire swashplate.

However, in the muddy environment of trench warfare the mechanically complex St Étienne Mle 1907 suffered from frequent stoppages and was difficult to maintain by frontline soldiers.

While these did produce high horsepower and even added some redundancy, they were mechanically complex and relatively expensive.

Despite having only a single rotor, the RE5 was mechanically complex and was a heavy motorcycle.

GE claims to have combated this by using simple pressure driven valves rather than complex mechanically actuated valves to divert airflow.

These vehicles, I knew, are mechanically complex, what with multiple systems for 110-volt and 15-volt electricity, sewage disposal, fresh water storage, pressure pump, propane gas, refrigeration, cooking and heating, air-conditioning.

Compared to contemporary teleprinters that were based on typewriter systems and were mechanically complex and expensive, the Hellschreiber was much simpler and more robust, with only two moving parts.

Although far too mechanically complex to survive in racing environments, the theory was sound, and would appear in Formula One a few years later in the BT46B 'Fan Car' of 1978.