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).
Query regarding the top speed of a Silver Ghost (Armoured Car) and the formula for calculating road speeds.
| Identifier | ExFiles\Box 143\2\ scan0050 | |
| Date | 1st July 1940 guessed | |
| [Handwritten annotations at top] Pm Dn what do you think about putting this in miscellaneous? W. Blackpool yours I think this mis... 120A Guy [Address and Date] 21, Station Road Poulton Le Fylde Nr. Blackpool Lancashire hovember 6th [Main text] Dear Sirs, I would appreciate very much if you could assist me to settle an argument which I have recently had with a colleague. I may say that I had the pleasure of driving a Silver Ghost model (Armoured Car) in 1929 in Palestine & I was very interested in the car throughout especially its capabilities. I would esteem it a favour if you would tell me what the highest speed would be in third gear on that particular model 40-50 H.P Silver Ghost with 30x6 tyres which to the very best of my knowledge were fitted in those days, only on one particular occasion I did 65 m.p.h. in third on a mud flat with my car & of course this is disbelieved by my friend, naturally I can only state what the speedometer read & I really believe it was registering correctly. I would also be pleased if you could tell me the formula for working out road speeds when maximum engine revs and gear ratios are considered with | ||