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).
Technical data sheet comparing specifications for Remy 12, Remy 6, and Delco contact breaker systems.
| Identifier | ExFiles\Box 52\3\ Scan313 | |
| Date | 4th March 1920 guessed | |
| -4- Contd. REMY 12. REMY 6. DELCO CONTACT BREAKER. No. of breaks per revolution. 12 6 6 Platinum gaps set at .020" .028" - Ratio time contact made / total time .67 .65 - Period (sec) .00556 .01111 - Time of make (sec) .00372 .0072 - Time of break (sec) .00184 .0039 - All at 900 R.P.M. of breaker. CONTACT BREAKER & PRIMARY Ratio time of make / time constant 1.145 1.09 Energy delivered by battery per period (joules) .0587 .087 Calculated current at break (amperes) 4.42 3.50 Ratio current at break / final current .682 .665 All at 900 R.P.M. of breaker. CONTACT BREAKER & CORE Approx. fluxat break. 7380 7400 10400 CONTACT BREAKER PRIMARY & CORE Approx. flux interlinkages at break. 1,325,000 2,620,000 Energy of magnetic field at break (joules) .0293 .046 Approx. efficiency of magnetic field production. .50 .53 CONTACT BREAKER SECONDARY & CORE Approx. flux interlinkages at break. 180.8 192 x 10^6 157 167 x 10^6 Approx. max. quantity of electricity discharged per break (microcoulombs) (arc component on indef: small gap). 441 470 575 610 | ||