A 20-gallon air compressor is big enough to use with air ... especially with an extension cord. At 68db, the dual-piston design is definitely quieter than comparable compressors, but that's ...

2 HP, 20-gallon portable electric air compressor delivers 5.4 CFM @ 90 PSI; 6.7 CFM @ 40 PSI Oil-free dual piston pump produces cleaner air for tools and maintenance-free operation Compressor runs ...

THE paper by H. 0. Farmer on “Free-Piston Compressor-Engines”, read before the Institution of Mechanical Engineers on December 6, must have been for many their first introduction to the ...

Atlas Copco AB (OTCMKTS:ATLRF – Get Free Report)’s stock price passed above its 50-day moving average during trading on Friday . The stock has a 50-day moving average of $11.60 and traded as high as ...

The market has reached all-time highs thanks to technology brought about by the quest for sustainability, such as oil-free ...

The free piston engine, a design with opposed pistons working against compressed air springs and combining both compression and firing strokes in a single axis, doesn’t turn anything in itself ...

The build starts by disassembling the compressor ... of the piston to the other. Acrylic end plates are fitted to the assembly. One end acts as an intake manifold, delivering air and fuel to ...

The aircraft is now in the Honduras air museum, which keeps it in running (but not flying) condition. The last dogfights between piston-engine, propeller-driven airplanes weren’t fought in the ...