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).
Cause of engine vibration on the 40/50 chassis and a proposed solution.
Identifier | ExFiles\Box 25\3\ Scan069 | |
Date | 14th March 1922 | |
X634 Hs.{Lord Ernest Hives - Chair} from EP.{G. Eric Platford - Chief Quality Engineer} a.{Mr Adams} to BY.{R.W. Bailey - Chief Engineer} c. to E.{Mr Elliott - Chief Engineer} EP{G. Eric Platford - Chief Quality Engineer}13/H14.3.22. Re. ENGINE VIBRATION. 40/50 CHASSIS. ->---------------- With reference to my discussion with you on the above, I still think the general complaint of engine vibration is due entirely to the pronounced harsh running when the car is on top gear about 20 - 25 miles per hour. It does not appear that the engine itself is bad at this stage, but that it synchronises with some other natural period of the chassis. We have only been able successfully to overcome this complaint in the past by giving special attention to the various chassis and body fittings, so that as far as possible the vibrations of these parts at this critical speed are eliminated, or as far as possible "damped". We feel that the suspension of the engine in the frame might be considered to advantage. BY.{R.W. Bailey - Chief Engineer} has suggested that as an improvement, the front feet of the engine can be fixed to the frame and the rear feet fixed in position, similarly as the front of the engine is now supported. Could this be tried? EP.{G. Eric Platford - Chief Quality Engineer} [Signature] [Stamp: TEST DEPT 14 MAR. 22] [Stamp: RECEIVED] | ||