Evolution Engines 7 Cyl 77cc 4 Stroke Glow Radial Engine
Manufacturer: Evolution Engines

The Evolution® 7-cylinder 77cc 4-stroke radial glow engine is meant to deliver the dependability and performance of a radial engine with stunning looks and sound.


  • Cylinder head and crankcases produced from aircraft grade alloys
  • Heavy-duty double bearing crankshaft
  • Billet aluminum pistons and hardened steel rings
  • Hard-chromed and lapped cylinder bores
  • Hardened steel cams
  • Carburetor jet valve incorporating latest design with a split opening for smooth acceleration
  • Zero percent or low nitro (5–10%) fuel with low oil content (5–7% oil/fuel ratio)

A stunning engine with solid performance and reliability–the 7-cylinder 77cc 4-stroke glow radial engine is designed for larger models, specifically scale applications where the use of a radial engine in a round cowl will provide the ultimate scale look for the modeler’s plane. While providing great looks and sound, it also delivers the dependability and performance of Evolution.


Displacement:4.7 cu in (77cc)
Bore:0.93 in (23.7mm)
Stroke:0.98 in (25.0mm)
Total Weight:5.7 lb (2.6 kg)
Crankshaft Threads:10 x 1mm
Prop Range:2-blade 22 x 12, 24 x 10; 3-blade 22 x 10
RPM Range:1,000–6,000
Fuel:0–10% nitro, 9% oil for break-in and for normal operations
Mounting Dimensions:Diameter 9.1 in (23.0 cm), length 7.9 in (20.0 cm)
Muffler Type:Straight pipe - collector ring is available for seperate purchase
HP:4.8 (approximate)
Cylinder Type:Ringed

Technical Notes

Engine diameter: 9.1 in (23 cm)


Product Num:
Evolution Engines 7 Cyl 77cc 4 Stroke Glow Radial Engine Reviews

The Evolution Engines 7 Cyl 77cc 4 Stroke Glow Radial Engine has not yet been reviewed.

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