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).
Flexible engine mounting movement measurements taken during hard braking conditions.
| Identifier | ExFiles\Box 104\1\ scan0228 | |
| Date | 11th October 1934 | |
| x5001- To E.{Mr Elliott - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager} c. to Wor.{Arthur Wormald - General Works Manager} c. to Ry. Hs{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager}20/KW.11.10.34. Flexible Engine Mounting. In continuation of our report Hs{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager}2/KW.10.10.34, we have now taken measurements of the engine movement that takes place under hard braking conditions. The method employed was to "chock" the front wheels, jack up the rear wheels and apply the footbrake as violently as possibly when the car was running at 50 M.P.H. on top gear, the amount of engine movement being registered on a micrometer clock fixed to the frame and registering from the front timing case. Our results show that without the diagonal stay fitted from the pedal shaft to the frame the engine moves on the N/S .015" backwards and on the O/S .011" forwards, and with the diagonal stay fitted the engine moves on the N/S .015" backwards and on the O/S .008" forwards. This movement should not affect our braking. Hs{Lord Ernest Hives - Chair}/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Whyman. | ||