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).
Instructions for fitting and troubleshooting an oil relay assembly and governor, including potential ignition issues.
| Identifier | ExFiles\Box 65\1\ scan0075 | |
| Date | 28th January 1925 guessed | |
| contd :- -4- admitted to the relay. This should move lever E.72518 through 1.5º ± .5º. The subsequent movement of this lever under increasing r.p.m. of the governor should conform with the attached curve. The full movement of this lever should be restricted to 24º - 1º. This can be effected by varying the thickness of the washer under cap E.72495. The actual movement of the lever from the oil relay should correspond with the curve given to within ± 2º. There should be practically no variation between the movement of the lever when the governor is slowing down or when it is speeding up. CUP LEATHER FITTING. The leather ring E.72502 should be a very easy fit in the bore of chamber E.72376. When assembled the piston E.72509 should slide down the bore under its own weight; very thin oil being used as a lubricant. OIL RELAY ASSEMBLY. Particular attention should be paid to the cleanliness of pistons E.72509, E.72503, and chamber E.72376 as any suspicion of grit on these parts is sufficient to interfere seriously with the working of the realy. POSSIBLE SOURCES OF TROUBLE. (1) The commencement of ignition advance is delayed. This may be due to :- (a) Too great initial tension of governor springs. (b) Any internal friction in governor. contd :- | ||