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).
Continued technical discussion on engine mounting systems and chassis steadiness.
| Identifier | ExFiles\Box 125\2\ scan0028 | |
| Date | 2nd February 1929 guessed | |
| contd :- -2- With this mounting in front only and fabric disc mounting on solid feet behind, the chassis was quite steady but the engine too rough. Rn.{Mr Robinson} is now rigging up the chassis with rubber liner feet as in sketch, both front and rear, in anticipation that somewhere about the correct compromise of engine smoothness and frame steadiness will be obtained. SEE ORIGINAL FOR SKETCHES. In the scheme as being tested the bracket and rubber liner are made a tight fit inside the chassis frame, and just bolted together through the web of the frame, the bolts being allowed a certain amount of xxx clearance for movement and crankcase expansion. A permanent scheme on these lines might be considered leaving the longitudinal flexibility of the foot attachment to take care of crankcase expansion. The frame opposite the rear feet is taper in plan but the feet can be built to suit, or the frame be rendered parallel by a special housing bolted thereto. E.{Mr Elliott - Chief Engineer} | ||