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).
'flat spot' in Bentley low-speed acceleration and the solution of fitting a smaller diameter induction pipe.
| Identifier | ExFiles\Box 85\4\ scan0088 | |
| Date | 12th October 1934 | |
| To E.{Mr Elliott - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} c. to Wor.{Arthur Wormald - General Works Manager} c. to By.{R.W. Bailey - Chief Engineer} c. to Bn.{W.O. Bentley / Mr Barrington} c. to MX{John H Maddocks - Chief Proving Officer} X 208 Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} 21/KW.12.10.34. Bentley Low Speed Acceleration. ----------------------------- We have noticed a tendency for a flat spot in the Bentley carburation at about 30 M.P.H. As will be seen from the attached report, the small diameter induction pipe greatly improves the trouble. Bench tests show that with the present engine giving 120 H.P. this small induction pipe does not cause loss of power. We are therefore fitting it to the next 10,000 miles car. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||