Gnome Rhône 14M

Variants

14M-00

LH rotation, 474 kW (635 hp)

14M-01

RH rotation identical to 14M-00

14M-04

LH rotation, 521.99 kW (700 hp)

14M-05

RH rotation identical to 14M-04

14M-06

LH rotation, 521.99 kW (700 hp), reduction gear 0.71:1

14M-07

RH rotation identical to 14M-06

14M-08

LH rotation, 559.27 kW (750 hp), reduction gear 0.71:1

14M-09

RH rotation identical to 14M-08

Applications

Breguet 693

Focke-Wulf Fw 189E

Gotha Go 244

SNCAC NC.510M

SNCAC NC.530

SNCAC NC.600

Henschel Hs 129B

Potez 631

Potez 633

Potez 637

Potez 662

Potez 63.11

Specifications (14M-4)

(14M-5 identical except opposite rotation)

Data from

General characteristics

Type: Fourteen-cylinder two-row supercharged air-cooled radial engine

Bore: 122 mm (4.80 in)

Stroke: 116 mm (4.57 in)

Displacement: 18.92 L (1,154.6 cu in)

Length: 1,251 mm (49.25 in)

Diameter: 950 mm (37.40 in)

Dry weight: 419 kg (924 lb)

Components

Valvetrain: Two overhead valves per cylinder

Supercharger: gear driven, 8.258:1 ratio, 1-speed supercharger

Fuel system: Bronzavia 110-L2 carburretor with automatic boost and altitude control

Fuel type: 87 octane rating gasoline

Oil system: Pressure feed 482.6 kPa (70 psi), dry sump, 120 S.U. secs (25.1 cSt) grade oil.

Cooling system: Air-cooled

Reduction gear: 0.71:1

Air Equipment 47 electric inertia starter

Performance

Power output:

(Take-off): 521.99 kW (700 hp) at 3,030 rpm for takeoff with 1,100 mm (43.3 in) Hg / +3 kg (6.6 lb) boost

(Normal): 492.16 kW (660 hp) at 3,030 rpm at 4,000 m (13,123 ft)

(cruising): 339.29 kW (455 hp) at 2,350 rpm at 4,000 m (13,123 ft)

Specific power: 27.21 kW/l (0.61 hp/(cu in))

Compression ratio: 6.5:1

Specific fuel consumption: 0.29 kg/(kW h) (0.48 lb/(hp h))

Oil consumption: 0.01 kg/(kW h) (0.018 lb/(hp h))

Power-to-weight ratio: 1.27 kW/kg (0.77 hp/lb)

B.m.e.p. max: 1,075 kPa (155.9 psi)