Variants
Note:
- Condor I
- (1920-1921) 600 hp, 72 built at Derby.
- Condor IA
- Alternative designation for Condor II.
- Condor II
- (1921) 650 hp, revised propeller reduction gear ratio, increased compression ratio (5.17:1). 34 built at Derby.
- Condor III
- (1923-1927) 650/670 hp, compression ratio 6.5:1, Re-designed connecting rods. 196 built at Derby.
- Condor IIIA
- (1925) 650/665 hp. Improved main bearing design and material.
- Condor IIIB
- (1930) 650 hp, 0.477:1 reduction gear, re-designed crankcase and crankshaft.
- Condor IV
- (1925) 750 hp. Direct-drive, modified engine mounting. 13 built at Derby.
- Condor IVA
- (1927) 750 hp. Nine built at Derby.
- Condor V
- (1925) As Condor IIIA with two-stage turbocharger. Run but not flown, one built at Derby.
- Condor VII
- Direct-drive Condor IIIA, two built at Derby.
- Condor C.I.
- (1932) 480 hp, compression ignition (diesel), two engines tested and flown.
Read more about this topic: Rolls-Royce Condor
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