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).
20/25 HP axle failure during a 15,000-mile test on car 22-G-V.
| Identifier | ExFiles\Box 101\1\ scan0280 | |
| Date | 20th May 1936 | |
| x500a To Sg.{Arthur F. Sidgreaves - MD} from Rm.{William Robotham - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} c. to E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}21/KW.20.5.36. 20/25 HP. Axle Failure. 15,000 miles Test - 22-G-V.{VIENNA} After a series of hill climbs during cooling tests the differential housing failed on this car. On examining the parts we find that they are not like those which have previously completed 15,000 miles on the Ph.III, nor are they like those which are at present being fitted as standard on Ph.III's and 20/25's. The failure is due to the parts not being made correctly to drawing. The parts are being replaced with the correct pieces and the test will be continued. In the meantime in view of the failure we are asking Hancock to put the Ph.III, 32-EX, through intensive hill climbing tests to ensure that the failure will not recur on parts which are correctly made. There is no doubt that the pieces fitted to 22-G-V were weaker than they would have been if they had been correctly machined. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||