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 firing order and bonnet temperature.
| Identifier | ExFiles\Box 173\1\ img029 | |
| Date | 5th January 1934 guessed | |
| at 30 M.P.H. and I believe everyone else finds the same thing. ③ Order of Firing: The suggestion has been made by several people that on a 3cyl pipe, the reversal of flow should take place after the outer cylinder has fired when the pipe is relatively full and not when the inner cylinder has fired and the pipe is more or less empty. I.E. existing firing order 142635 with C. & P. carbs better for 2 carbs. 153624. This requires a new camshaft but I think we ought to try it. Both the smaller Carbs and altered firing may make air silencing easier, thereby allowing a smaller balance hole in pipe. ④ Bonnet Temperature. It may be, that for winter conditions, the louvred bonnet may just be the last straw. If it were not for these, the radiator shutters being nearly closed, the air round the intake should be | ||