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 plotting the results of torsional vibration tests on a B.80 No 2 Buick damper.
| Identifier | ExFiles\Box 124\1\ scan0225 | |
| Date | 20th July 1939 | |
| TORSIONAL VIBRATION TESTS ON B.80 NO 2, BUICK DAMPER, LAMINATED SET AT 125 LBS FT DEGREE, SOLID SET AT 125 LBS FT DEGREE, VIBRATION AMPLITUDE DEGREES, ENGINE R.P.M, FIG 10, RM{William Robotham - Chief Engineer}/J.R.S. 20.7.39 | ||