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 weaker springs in the side steering tube to reduce road shocks.
| Identifier | ExFiles\Box 171\1\ img041 | |
| Date | 14th August 1926 | |
| RR 755 (10M) (DB{Donald Bastow - Suspensions}130 12-9-24) MS 301225 ORIGINAL STANDARDISATION of CHASSIS PARTS. Description of Parts: WEAKER SPRINGS IN SIDE STEERING TUBE. Origin: To reduce road shocks. Experimental Test Report: It is proposed, in cases of complaint with the original Phantom steering with 1.1/8" lead, that the springs in the side steering tube should be changed from 3500 lbs. to 1800 lbs. If found necessary, the .940 worm will also be fitted. Road Test Report: Several customers cars have satisfactorily been dealt with in this way by Paris. It has been agreed that approximately 50% reduction in road shocks can be obtained by alteration to the springs. Drawing No. 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. Cost of Old Part. £ Weight of New Part. Cost of New Part. £ Difference per Car. Difference per Car. £ Cost of Parts in Works which will be scrapped if commenced on:- Series........£........ Series........£........ Series........£........ Signature of Mr. De LOOZE that above is correct. SIGNATURES, DATE, REMARKS MR. B. JOHNSON MR. ROYCE MR. WORMALD MR. ROWLEDGE MR. DAY MR. BAILEY MR. PLATFORD MR. ELLIOTT MR. NORTHEY, 21.9.26, Appd P.N. MR. HIVES | ||