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).
Tests completed on a speedometer drive, specifically concerning slots in the faces of bushes.
| Identifier | ExFiles\Box 15\5\ Scan214 | |
| Date | 31th August 1931 | |
| X 310. To Da.{Bernard Day - Chassis Design} From Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} c. to By.{R.W. Bailey - Chief Engineer} Wor.{Arthur Wormald - General Works Manager} Hs{Lord Ernest Hives - Chair}/Les.12/MJ.31.8.31. SPEEDOMETER DRIVE. With reference to your Dal/M17.8.31. we have now completed tests on one of our cars using four slots .100 wide and .025 deep in the faces of the bushes G.76751 and G.77492. The bushes were built up dry and after 30 miles on the road oil had reached the extreme end of the bushes. Care was taken to see that the clearance between the bush and the spindle was to drawing. The same result was obtained three times. This scheme is being adopted on production at once. Hs{Lord Ernest Hives - Chair}/I.A.Leslie. | ||