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).
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 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. | ||