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).
Continuation of specification ELC23, detailing tests for distributor and governor components.
| Identifier | ExFiles\Box 168\3\ img213 | |
| Date | 4th July 1939 | |
| -2- Specification No. ELC23. (Contd). and should lie in the limits 0.017 to 0.022 inches, however, the adjustment should be initially carried out as above. The distributor should now be run at a speed of 2,250 r.p.m. when the average current should not be less than 0.52 amperes. If it is less, ascertain that the radius on the cam rubbing block conforms to drawing, also that the contact lever spring is not faulty. (5) The distributor rotor should withstand for a peroid of one minute without breakdown, a voltage of 18,000 (peak) applied between the rotor blade and the inside of the bakelite moulding. (6) Ascertain that the registry of the rotor with the stationary H.T. contacts and the radial clearance of same, conform to the limits given in the drawing. (7) At the end of the governor test, the distance measured from the leading corner of the rotor blade to the beginning of the mark where the sparks have passed, should lie within the limits 0.050 and 0.150 inches. (8) The condenser, tested before mounting on the distributor should conform to R.R. specification No. EL.20. Mechanical Test of Governor. The governor advance characteristic should conform to the respective table below; the speed at which the advance commences is important and should be kept within the limits :- -Contd- | ||