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).
Standardisation of chassis parts to introduce flexibility in servo operation to overcome servo jaggers.
| Identifier | ExFiles\Box 67\1\ scan0033 | |
| Date | 30th April 1926 | |
| RR 755 (10H) (DB{Donald Bastow - Suspensions}130 12-9-24) MS 301225 48370 Completed 3/6/26 STANDARDISATION of CHASSIS PARTS. Date 30.4.26 Description of Parts FLEXIBILITY IN SERVO OPERATION. Origin. To overcome servo jaggers. Experimental Test Report. We receive a number of complaints of jaggers from the servo. We have proved that if we introduce flexibility in the form of a rubber ring in the mechanism, the fault is overcome. Road Test Report. Run 6000 miles on 8-EX. Run 4000 miles on 98-NK. Fitted to 7-EX car. Tried on several other cars for effectiveness. Drawing No. No.8370 Part List A Scrap and replace at all costs, including Chassis already delivered to customers. B Scrap and replace on Chassis in works. C Scrap present stock and replace on all Chassis not yet handed to test. D Use existing stock Alteration effective on future Chassis. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ . 5s. 1d. Cost of New Part. £ . 5s. 11d. Difference per Car. £ . . 10d. increase. Cost of Parts in Works which will be scrapped if commenced on:- Series............£............ Series............£............ Series............£............ Signature of Mr. De LOOZE that above is correct. My/Rb.{R. Bowen} 21.5.26. SIGNATURES | DATE | REMARKS MR. JOHNSON | | MR. B. JOHNSON | 3.6.26 | agreed MR. ROYCE | 3.5.26 | Agreed. FHR. MR. WORMALD | 30.4.26 | Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE | 30.4.26 | Agreed. Rg.{Mr Rowledge} MR. DAY | 4.5.26 | Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY | 3.5.26 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 4.5.26 | Agreed, recommend put on cars at once. Also prepare supply to deal with faulty ones on test and complained of. MR. ELLIOTT | 4.5.26 | Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY | 14.5.26 | Agreed. PN.{Mr Northey} MR. HIVES | 30.4.26 | Agreed. E.Hives. | ||