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).
The wiring for 'Japan III', addressing voltage loss from the switchbox positive feed.
| Identifier | ExFiles\Box 168b\2\ img248 | |
| Date | 19th March 1932 | |
| WST Y6-081 Hs{Lord Ernest Hives - Chair}/Wst. BY/RD1/W.19-3-32. Re :- "Japan III". - Wiring - We had considered the possibility of voltage loss by taking the switchbox positive feed from the starter main switch. There is approximately only .5 volt drop at this point and bearing in mind the fact that the ignition coil sparks continuously at a lower voltage than the lowest allowed for on starter motors, we think this method should be quite satisfactory as it also gives us a great advantage mechanically in the wiring of the chassis. BY/RD. | ||