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).
Modifications to the cylinder head and induction pipe arrangement for the 'INDIA 3' project.
| Identifier | WestWitteringFiles\S\2April1928-June1928\ Scan001 | |
| Date | 2nd April 1928 | |
| R.{Sir Henry Royce} FROM E.{Mr Elliott - Chief Engineer} C. to HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} ORIGINAL E1/M2.4.28. x5050 x5070 INDIA 3. ARRANGEMENT OF CYL. HEAD AND INDUCTION PIPE. We quite agree that if the valves can be moved out of centre, then all the cyl. nuts can be made accessible to a box spanner with the induction pipe not in place. This is shewn schemed on the attached blueprint LeC. 2541., and we think it makes a light and simple job of the head. Moving the nuts does not produce the same result as they have to be moved a long way if the port facings are to be brought in as we desire. LeC. 2541. conforms to the standard crankchamber with but slight modifications to the central line of bolts only, which modifications need not affect the interchange-ability of the casting. The uptake of the induction pipe has been inclined with the double object of keeping the carburetter as low as possible, and the uptake as long as possible. The uptake and weir pipe castings can be made in one piece if desired by cutting away the jacket to clear the induction pipe when assembling. The valve rockers are shortened from 2.750 to 2.500, but are still longer pro rata than we are using on Phantom E.{Mr Elliott - Chief Engineer} | ||