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).
Request to produce three electro-magnetic main switch coils for an experiment on the Peregrine II, 20/25 HP and 40/50 HP models.
| Identifier | ExFiles\Box 168a\2\ img086 | |
| Date | 16th January 1933 | |
| WST PMG. Hs{Lord Ernest Hives - Chair}/Wlst. x6C80. BY/RD/W.16.1.33. *Peregrine II*, 20/25 H.P., and 40/50 H.P. 468 turns 21 SWG D.S.C Sec.8060 - Electro-Magnetic Main Switch. Will you please put in hand three coils and resistances in accordance with the blue prints attached hereto, which represent an experiment using finer wire for the coil and a larger capacity resistance. The material to build these three coils is already available having been produced to our memo BY/RD4/W. 26.8.32 - a 'Peregrine II' instruction for six sets - but it will be necessary to obtain the wire to produce the windings, the amount required being approximately :- 1/2 lb. of 21 S.W.G., D.S.C. Copper Wire. } Per 65" 33 S.W.G., D.S.C. Eureka Resistance Wire. } Switch. Blue prints of :- D.73829 - Coil Assembly. D.73830 - Resistance Coil Assembly. sent herewith. BY/RD. | ||