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).
Strength and deflection test results comparing a die-cast steering hand wheel with a standard sand-cast version.
| Identifier | ExFiles\Box 3\1\ 01-page005 | |
| Date | 19th November 1912 | |
| ROLLS-ROYCE Ltd. EXPERIMENTAL CARD. No. X172 Issued: 19-11-12 Subject Heading: Steering Gear. Work to be Carried Out: Test Die cast steering hand wheel for strength & compare with standard. Mount wheel on tube in ordinary way & load for torque. Measure deflection & find breaking load. Material Required: Die cast hand wheel (Mr Nadin) 01859. Also standard hand wheel (D.O. instructed to order). Origin of Experiment: O.O. R.M.&O.{Mr Oldham}/29.11.12 D.O. Instructed: TR{Capt. F. W. Turner - Finance}34/19.11.12 Works Instructed: - REPORT. Deflection measured on the outside rim. lbs at 13.62" Deflection Sand cast. | Die cast. 250 | .04" | .04" 500 | .08" | .18" 750 | .20" | Arm broke at corner of Keyway 1000 | .46" 1250 | .74" 1500 | Broke at corner of Keyway The sand cast wheel was .030" thicker than the die cast. P.T.O. | ||