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).
Unsatisfactory vibrations and the results of trials with torque reaction dampers.
| Identifier | WestWitteringFiles\V\March1931-September1931\ Scan248 | |
| Date | 8th June 1931 | |
| HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} C. to BY.{R.W. Bailey - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} ORIGINAL P. 2. - 2nd. L. H.{Arthur M. Hanbury - Head Complaints} CONVERSION SCHEME. RECEIVED 1931 JUN 9 HCS This car, as sent to WW. on Sat. the 7th. June, is satisfactory for booms and other vibrations, but: (1) The bonnet knocked. (2) The frame jellied (at slow road speed.) (3) Steering lacked selectivity at all speeds, and was therefore a disappointment. After several trials and comparisons with 18-EX., the torque reaction dampers were made much tighter as a forlorn hope, and the impression I got was very definitely better than with anything we have tried. It seems to have improved all the three points mentioned above, and it should be tried further with still softer rubber and still tighter dampers. Evidently the dampers were not nearly tight enough to do their work, just as a damper flywheel without friction but with driving springs would not be effective. During a conversation E.{Mr Elliott - Chief Engineer} suggested we try, for education, (not expecting improvement,) to control the engine only by the gearbox (rear) - i.e. delete all 4 feet and dampers, using fore and aft trunnion feet (preferably soft rubbers) at gearbox. The result expected is very bad radiator vibrations. Then add front torque reaction dampers to see the efficiency of these. R.{Sir Henry Royce} Handwritten notes: x7770. x7005. Filed. | ||