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 requirements for heater connections on chassis 30.G.VII.
| Identifier | ExFiles\Box 109\4\ scan0075 | |
| Date | 24th April 1939 | |
| 666 To HPS.{Horace Percy Smith - Experimental Factory Mgr} c. to Rm{William Robotham - Chief Engineer}/ABR.{A. B. Roberts} Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards}6/JH.24.4.39. Heater Connections on 30.G.VII. Two Rotherham taps will be required for the job, one being fitted in the rear core plug in the cylinder head and the other at the end of a water rail connected to the suction side of the pump by a T. piece, and passed along the head under the exhaust manifold. A clip to any convenient stud will of course be necessary. Final connections to the heater will be made by a short piece of copper pipe and rubber hose. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} | ||