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).
Acceleration test results for the Continental 40/50 HP Phantom II carburetter.
| Identifier | ExFiles\Box 92\2\ scan0171 | |
| Date | 3rd November 1933 | |
| S/W. Hs.{Lord Ernest Hives - Chair} from PN.{Mr Northey} Copy to Sg.{Arthur F. Sidgreaves - MD} C. Wor.{Arthur Wormald - General Works Manager} EP.{G. Eric Platford - Chief Quality Engineer} Cx.{Major Len W. Cox - Advertising Manager} Enquiries are frequently made to our Salesmen in respect of the acceleration on top gear of our latest type Continental 40/50 H.P. Phantom II with semi-expanding carburetter, compared with the acceleration of the previous Continental models with the old type of carburetter. With a view to obtaining some figures about this, JLE.{J. Lee Evans - Chassis Test Manager} and I made some tests at Brooklands on Monday last, and they are as follow :- [STAMP: RECEIVED NOV 3 1933] Two passengers carried. Cut out closed - 10 - 20 5 seconds. 10 - 30 9.4 " 10 - 40 14.8 " 10 - 50 19.8 " 10 - 60 27.8 " 10 - 70 36 " 10 - 80 49 " With cut out open, other conditions similar - 10 - 40 14.4 seconds. 10 - 60 25.4 " Acceleration - starting on 2nd gear - 0 - 60 20 seconds. 0 - 80 45.2 " I am enclosing reprints from articles obtained showing two acceleration curves, one in the "Motor" on Sept. 24th 1929 in respect of the performance of 26-EX, and the other on April 7th 1932 in "Motor Sport" concerning the performance of 31-GX. You will observe that there appears to be a discouraging falling off in performance since these two cars were made, my pencil curve on these charts indicating the difference. The weights of the cars complete are as follows :- | ||