Rolls-Royce Eagle - Variants

Variants

Note:

Eagle I (Rolls-Royce 250 hp Mk I)

(1915), 225 hp, 104 engines produced in both left and right hand tractor versions.

Eagle II (Rolls-Royce 250 hp Mk II)

(1916), 250 hp, 36 built at Derby.

Eagle III (Rolls-Royce 250 hp Mk III)

(1917-1927), 250 hp, increased compression ratio (4.9:1), strengthened pistons. 110 built at Derby.

Eagle IV (Rolls-Royce 250 hp Mk IV)

(1916-17), 270/286 hp, 36 built at Derby.

Eagle V (Rolls-Royce 275 hp Mk I)

(1916-17), 275 hp, high-lift camshaft, 100 built at Derby.

Eagle VI (Rolls-Royce 275 hp Mk II)

(1917), 275 hp, first use of twin spark plugs, 300 built at Derby.

Eagle VII (Rolls-Royce 275 hp Mk III)

(1917-18), 275 hp, 200 built at Derby.

Eagle VIII

(1917-1922), 300 hp, extensive modifications, 3,302 built at Derby.

Eagle IX

(1922-1928), 360 hp, developed as a civil use engine, 373 built at Derby.