Modifications for the Ignition Governor on a 40/50HP Chassis.
| Identifier | ExFiles\Box 65\1\ scan0148 | |
| Date | 26th April 1926 | |
| COPY 48685 c. to Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} BY {R.W. Bailey - Chief Engineer} /SS {S. Smith} 8/DB. {Donald Bastow - Suspensions} 26.4.26. Re 40/50HP Chassis - Ignition Governor. Sec:5120. In reply to your BY10/H.20.4.26, the modifications required by the Exptl:Dept: in connection with the Ignition Governor are as follows:- together with the position of the standard parts in the Works:- | Alteration. | New Drg: No. | Standard Drg:No. | Position in Works. Series A-2-A, A-2-B. | |---|---|---|---| | 1. Relay cylinder made .100 deeper. | E.74837. | E.72376. | 50 finished. 150 part machined. | | 2. Relay valve in aluminium. | E.74886. | E.72503. | All finished. | | 3. Governor Weights in aluminium. | E.74887/8. | E.72476/7. | All finished. | | 4. Crosshead lengthened .100 at each end to suit deeper cylinder, and also to reduce the travel of piston. | E.74836. | E.72506. | 160 finished. 40 part machined. | | 5. Sliding collar oil Seal to Lec.2121. | | | Already instructed for B-2 Series. | | 6. No oil seal in Gov. Casing, i.e. present standard. | | | Already instructed for B-2 Series. | | 7. Lighter loading on return spring. | E.74838. | E.72497. | All finished. | | 8. Light spring ring to be fitted inside the chrome leather. | E.74907. | | No ring is fitted on present standard. | Works cards have not been issued for B-2 Series, so it would appear possible to bring the modification on production at that Series. BY {R.W. Bailey - Chief Engineer} /SS. {S. Smith} | ||
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).