Comparison of lubrication specifications between the Phantom II car engine and the Kestrel aero engine.
| Identifier | ExFiles\Box 11\1\ 01-page12 | |
| Date | 15th May 1933 | |
| Files x4770 15.5.33 ------ COMPARISON OF PARTICULARS PERTAINING x TO LUBRICATION OF PHANTOM II CAR ENGINE (EXP.No.25) & KESTREL(Aero Engine) AERO ENGINE. | | P.II. Large Crank | Kestrel(Aero Engine) |---|---|--- | Normal Max. Speed. | 3250 | 2250 | Journal (main) dia. | 2.8" | 3.0" | Clearances diametral | | | Whitemetal. | .00175 | .002 | Lead bronze. | .00375 | .0035 | Clearances in thou's/inch | | | Whitemetal. | .625 | .668 | Lead bronze. | 1.34 | 1.17 | Clearance area of bearings :- (total) sq.in. | 0.462 | 0.462 | Lead bronze bearings (grooved) - oil to bearings (approx). | 4 galls/min. | 4 galls/min. | Oil press. with above flow (oil hot). | approx. 17 lbs/sq.in. | approx. 60 lbs/sq.in. | Oil pump delivery. | 4.3 galls/min | 5.4 galls/min. Hs {Lord Ernest Hives - Chair} /Std. | ||
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).