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).
Letter to H.R. Ricardo requesting information on ignition advance curves for cylinder heads.
| Identifier | ExFiles\Box 27\2\ Scan126 | |
| Date | 29th November 1933 | |
| XTTTK Experimental Dept. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}7/KT. November 29th 1933. H.R.Ricardo Esq., Messrs Ricardo & Co (1927) Ltd., Bridge Works, Old Shoreham, Sussex. Dear Mr.Ricardo, You will remember that when Mr.Elliott and myself were at Shoreham discussing cylinder heads, you showed us some curves giving the optimum ignition advance for your side valve exhaust, overhead inlet, head. I believe that you also had some curves showing the ignition advance of heads which you consider over-turbulent and under-turbulent. I should be very much indebted to you for any information you could let me have on this subject particularly with reference to engines of about 3.000" bore. Yours sincerely, | ||