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).
Instruction sheet detailing tests and settings for a distribution board on chassis S.S.1.
| Identifier | ExFiles\Box 65\2\ scan0155 | |
| Date | 3rd December 1928 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8-12-24) NP 3C6975 X 7740 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.E.C. Order No.: A.D. 18 Customer's No.: X Distribution Board on Chassis S.S.1. (18 Ex) This was fitted to the car before bench tests could be made and accordingly the setting was done in position on the dash using batteries and a potentiometer wire. The cut-out closing voltage was set to 12.4 (shunt current .17a). no falling out test being made. It appears to be generally O.K. The green-lamp switch coil resistances are: copper 7.5 ohms, manganin 31.9 ohms, total 39.4 ohms. Ratio manganin to copper 4.25:1. These values would correspond to 159 ft of the copper wire and 60 ft of the Signed: (Cont'd) This Sheet must be filed on completion of the work. | ||