Video Presentation

Specifications

• Steam machine inspired by stationary engine
• Double acting two-cylinder pneumatic engine with two valves (unmodified)
• 90° angular offset between the two crankshafts
• 5:1 gear ratio for the inertia wheel
• Valve gear mechanism to reduce the switch deadspot time
• Speed indicator using centrifugal force
• Air control valve by pinching the input hose
• Powered by 4-pump hand

You can read the full review of this model on my blog.

How to build ?

You only need the parts and the instructions. You can purchase the PDF instructions on this shop which contains the partlist at the end, and you can check on Rebrickable or in the instructions preview below.

If you do not have the parts, you can purchase the complete kit from retailers :

• Using Genuine LEGO Parts : This model is available at Buildamoc, in a complete package including LEGO Genuine Parts and PDF instructions. (Air Source Not Included, see below the requirements)
• Using non-Genuine LEGO Parts : This model is available on LesDiy Store in a complete package, including parts (alternative bricks from China) and PDF Instructions. (Air Source Included : 4-pump in handpump)

About this product

Instructions preview

Building note

Please note that you need to have you own source or air (3 bar / 40psi) (except for the alternative bricks kits). You can use :

• 4x pump LEGO like this one
• Use a LEGO compressor according to the specs
• Use a electrical compressor like automotive compressor, industrial or electrical pump, you will need to put the air in the LEGO hose with . You can use a ball needle.
• Use a hand pump with ball needle.