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).
Numbered list of engineering questions and action points regarding vehicle components and testing.
| Identifier | ExFiles\Box 174\3\ img154 | |
| Date | 13th August 1937 | |
| P.III. -2- HWS/H.13.8.37. (9) Why is 32-ZX suspension so much harder than anything that is being turned out on production? We presume there is no danger of standardising this ? (10) What prevents us standardising P.II road springs on P.III, and what do we save thereby in weight and cost ? (11) Hardy Spicer Prop. shaft for the P.III. What about it? (12) How soon can we have the raised front engine mounting on the Continental P.III ? (13) Les.{Ivan A. Leslie} to let me try a Gerdes Armstrong damper on the back of a P.III with definite slack in the bushes to see if it is silent. KEEP ON (14) Can we get one of the new by-pass filters on the next 15,000 miles' test ? Also run on test bed ? (15) What are the spring rates and shock damper setting on the Continental P.III ? Can Les.{Ivan A. Leslie} tell us anywhere in England where we can get spring inter-leaving ? KEEP ON (16) Hyman. From the condition of 34-ZX cylinder bores, do you think that our air cleaners are effective ? (17) Steadman. The sooner we can replace the existing P.III oil cooler by the new type from Marstons the better. KEEP ON (18) We must run threaded shackles on the back of 34-ZX for the next 15,000 miles' test. KEEP ON (19) What piston have we got in 32-ZX unit ? Are we yet ready to run tin plated pistons 15,000 miles ? (20) We ought to see how the polar load diagram (Ll.Smith) of the P.III big end compares with that of the Bentley. Also, how our big end section compares with the latest aero practice. Also, how the babbit thickness compares with American practice. We must run a set of cadmium nickel on the P.III. We feel that with an oil cooler we ought not to be having big end trouble. | ||