Stationary compound steam engine with stephenson valve gear, variable lead and double admission

Improved model of the older video of the same engine. Added the variable lead feature and some other minor changes like "steamlining" the chests where it was possible and lightening the parts. Everything else is said in the video.

• #science_technology
• #stationary
• #steam
• #engine
• #compound
• #double
• #expansion
• #stephenson
• #variable
• #lead
• #valve
• #gear
• #admission