Renault 8G

Design and development

Construction used separate cast iron blocks for each pair of cylinders, mounted on a light-alloy crankcase with an included vee angle of 50 degrees. Each bank had a single overhead camshaft, shaft-driven through bevel gears. It was equipped with a single dual-choke updraught Zenith carburettor, and twin spark ignition through four magnetos. The crankshaft was a flat plane with three bearings and four throws, each pair of cylinders sharing a master-slave connecting rod onto the same crankpin.

Variants

8G

140 hp (100 kW)

8Ga

150 hp (110 kW)

8Gb

160 hp (120 kW)

8Gc

175 hp (130 kW)

8Gd

190 hp (140 kW)

8Gdy

200 hp (150 kW)

8Ge

200 hp (150 kW)

Applications

Dorand AR.1 - Renault 8Gd - 1917

Farman F.80 - Renault 8Gd

Dorand AR.2 - Renault 8Gdy

Specifications (8Gd)

Data from

General characteristics

Type: 8-cylinder naturally aspirated liquid-cooled 50° "Vee" piston aircraft engine

Bore: 125 mm (4.9 in)

Stroke: 150 mm (5.9 in)

Displacement: 14.7 L (900 in³)

Components

Valvetrain: Overhead camshaft-actuated, single intake and single exhaust valve per cylinder

Fuel system: Twin-choke updraught carburettor

Oil system: Wet sump

Cooling system: Water

Performance

Power output:

192 hp (143 kW) at 1,500 rpm

196 hp (146 kW) at 1,550 rpm son régime normal

200 hp (150 kW) at 1,600 rpm son régime maximum

Specific power: 9.93 kW/L (0.22 hp/in³)