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).
Low-speed wobble on the 30 HP car, comparing it to the 20 HP model, and proposing a 10,000-mile test.
| Identifier | ExFiles\Box 5a\2\ 02-page084 | |
| Date | 1st April 1929 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} SY. c. to SG.{Arthur F. Sidgreaves - MD} WOP. c. to E.{Mr Elliott - Chief Engineer} FN. c. to EP.{G. Eric Platford - Chief Quality Engineer} K5840 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}/LGL1.4.29. K459 G.3. - PROPOSED 10,000 MILES TEST CAR. With reference to HL/M5.4.29. reporting on low speed wobbles on the 30 HP. car. We do not think that this should be regarded as a frequent trouble with the 20 HP. car. Experimentally, since we fitted the spring loaded cross steering tube we have had no cases of low speed wobble on 20 HP. cars. We also learn from the Test Dept. that they have never experienced a case since they fitted the spring loaded cross steering tube. It is conceivable, with the centrepoint lubrication, that we have lost an appreciable percentage of our friction at this point. It will be remembered that on the S.S. we have increased the diameter of the balls. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||