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).
Preliminary runs for camshaft and valve comparisons on a Falcon X low compression engine, noting issues with high oil consumption and bearing leaks.
| Identifier | ExFiles\Box 43\3\ Scan073 | |
| Date | 5th October 1926 | |
| X4003 EXPERIMENTAL REPORT. 5.10.26. COPIES TO: R.Ed.{J. L. Edwards} BJ WOR{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} EP.{G. Eric Platford - Chief Quality Engineer} PN.{Mr Northey} OY. RG{Mr Rowledge} Expl. No. 4003 T417a REF. Hs{Lord Ernest Hives - Chair}/FCW1/T6.10.26. OBJECT OF TEST. Preparation and preliminary runs for camshaft and valve comparisons on Falcon X low compression engine. TESTER. F.C. Wenger. CONDITIONS. 3-Falcon X, as per report 1/10/26. Fuel 50% benzol, 50% aviation. 2 C.H. Duplex carburetters. SUMMARY OF TEST. After running light for 2 1/4 hours the engine was opened up to full throttle at 2250 r.p.m. and at this speed the engine developed 434 B.H.P. This engine has the shallow lower half and sump which is always accompanied by a high oil consumption. The over-oiling on this engine was too bad to run. After the lower half had been removed, the bearings were put under an oil pressure test by means of a hand pressure pump and it was found that excess oil leaked from the main bearings at 45 lbs/in.2. The engine has now been returned to the Expl. Shop for overhaul of the bearings. We are putting 4-F.X. on test which is now fitted with Y alloy pistons (E.28480). Hs{Lord Ernest Hives - Chair}/F.C. Wenger. | ||