The R-715 can be installed as tractor or pusher. The standard starter mount affords a wide range of starters, as Heywood injection, hand turning gear, electric or combination starters, electric starters etc. The provision of a standard drive for an electric starter affords use of electric type starters, lighting system, radio etc. Provision of a fuel pump drive allows various locations of fuel tanks. The carburettor location allows gravity feed. Standard SAE propeller end of crankshaft provides for use of a minimum weight metal propeller hub.
Type: 5 cylinder 4 stroke air cooled radial
Manufacturer’s Rating: 190 hp at 1800 rpm
Displacement: 715 cu.in
Compression ratio:
Bore: 5 5/8 in
Stroke: 5 3/4 in
Length: 34 13/16 in
Diameter: 50 in
Weight: 410 lb
Lubrication: Circulating oil system, pressure feed to front & rear main bearings, and to plain link pins, through grooved master rod bearings.
Ignition: 2 Scintilla magnetos
Carburation: Stromberg
All Aero 