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).
Engine design, including silent tappets and valve configurations, with comparisons to Cadillac.
| Identifier | ExFiles\Box 173\2\ img095 | |
| Date | 15th February 1934 guessed | |
| silence is better. The price is good & less 30%. If you want to get it into England on a Triptyque or get Cadillacs to run it some miles & then pay duty on it second hand please let me have full particulars of method to employ to avoid trouble with the Customs. Silent Tappets. Cadillacs have our trouble if valve springs surge. Their cure is to change the valve springs. For close They use a toe of .011 with their silent tappets of duration approx 40 crankshaft degrees but I will fit opening curve. Sixes or Eights. Cadillacs, with low taxation restrictions, no penalisation for increasing number of cylinders, are thinking only straight eights and sixteens at the moment. I think they are designing a sixteen of about 350 cu ins with side valves to sell for less than 4000 £. At the moment they seem to favour side valves as making a lighter & much cheaper engine with little loss of efficiency over the O.H.V. I think that this is a direct reflection on the present | ||