Graph showing curves of spark-lengths and current consumptions for coils G.B.S. and S.B.1.
| Identifier | ExFiles\Box 45\4\ Scan279 | |
| Date | 21th December 1933 | |
| CURVES OF SPARK-LENGTHS AND CURRENT CONSUMPTIONS. OF COILS G.B.S. AND S.B.1 ON 10 VOLTS (APPROX), WITH GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) BALLAST AND DISTRIBUTOR. CONDENSER, ROLLED PAPER, CAPACITY .45 mF. NOTE. Spark readings taken on single gaps. AXIS LABELS: SPARK LENGTH [MM] CURRENT [AMPERES] DISTRIBUTOR SPEED [R.P.M.] LEGEND: Points marked o Current through coil S.B.1. + Current through coil G.B.S v Spark-length from coil S.B.1 Current reversed . Spark-length from coil S.B.1 Current normal ∇ Spark-length from coil G.B.S Current reversed x Spark-length from coil G.B.S Current normal F.A. | ||
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).