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 data for flywheel vibrations on a 25 HP engine, showing crank deflection under load.
| Identifier | ExFiles\Box 137\4\ scan0111 | |
| Date | 6th November 1930 | |
| To R.{Sir Henry Royce} From Hs{Lord Ernest Hives - Chair}/An. c. to Sg.{Arthur F. Sidgreaves - MD} Mor. c. to E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} c. to Ey. J634 Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}2/AJ.6.11.30. x634 x5300 FLYWHEEL VIBRATIONS. 25 HP. With reference to Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}3/AJ.31.10.30. Herewith figures taken with the crank at right angles to and parallel to the direction of load application. - NO.6 CRANK AT 90° PAST B.D.C. LOAD ON LEVER - LB. DEFLECTION INS. Clock A.{Mr Adams} Clock B. Clock C. Clock D.{John DeLooze - Company Secretary} Zero. Zero. Zero. Zero. Zero. 20 .003 .004 .0035 .002 40 .005 .0085 .008 .005 60 .0075 .0125 .011 .007 80 .010 .016 .015 .009 100 .012 .020 .0195 .0115 SET 0 0 0 0 | ||