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).
Graph showing the results of torsional vibration tests on a B.80 No. 2 engine with a Buick laminated damper.
| Identifier | ExFiles\Box 124\1\ scan0227 | |
| Date | 10th July 1939 | |
| TORSIONAL VIBRATION TESTS ON B.80 NO. 2 BUICK DAMPER (LAMINATED) MOMENT OF INERTIA .00603 SLUG FT^2 105 LBS. FT. DEGREE -1 129 LBS. FT. DEGREE -1 159 LBS. FT. DEGREE -1 FIG. 8 VIBRATION AMPLITUDE DEGREES ENGINE R.P.M. | ||