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).
Modifications to the Wraith III water pump delivery pipe and mechanical petrol pump.
| Identifier | ExFiles\Box 149a\1\ scan0255 | |
| Date | 10th July 1937 | |
| SWDL{Len H. Swindell} Files SECRET: 1269. BY c. Rm.{William Robotham - Chief Engineer} HPS.{Horace Percy Smith - Experimental Factory Mgr} E/JNR.{Charles L. Jenner}1/HP.10.7.37. Wraith III. Please receive herewith:- LeC.5779 showing the modified water pump delivery pipe. This consists of making a snout on the water pump snail and joining it up to the block with a rubber hose and jubilee clips. It will be remembered that the design previously instructed was criticised because the right angle joint was difficult to make. Also herewith LeC.5772 showing the mechanical A.C. petrol pump, type A.J. fitted to the engine in conjunction with a single high pressure S.U. pump carried on the offside engine arm. E/JNR.{Charles L. Jenner} | ||