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).
Test report from an Upton Lewis machine on Royal Aircraft Factory Piston Alloy B4, showing test parameters and resulting diagrams.
| Identifier | ExFiles\Box 37\4\ scan 098 | |
| Date | 1st July 1917 | |
| UPTON LEWIS MACHINE TEST No 11 MARK AF DATE 7/17 MATERIAL RAF ALLOY B4 STATE SECTION 1" x 1/2" DIST. BETWEEN JAWS 1/4" THROW OF CRANK 3/4" SPEED R.P.M. 106 SPRINGS 4 1/2 32 PER INCH TOTAL No OF REVS. OF DIAGRAM ROYAL AIRCRAFT FACTORY PISTON ALLOY B4 AL 91% CU 7.0% ZN 1% SN{Mr Sanderson} 1% [Faint Stamp Text] ROLLS-ROYCE AERO ENGINE DEPT DERBY | ||