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 68\1\ scan0137 | |
| Date | 4th June 1926 | |
| RR 755 (10H) (DB{Donald Bastow - Suspensions}130 12-9-24) MS 301225 COMPLETED 15.6.26 STANDARDISATION of CHASSIS PARTS. Date 4.6.26 X No. 8450 Drawing No. Part List Description of Parts: WEAKER SPRINGS IN SIDE STEERING TUBE. Origin: To reduce road shocks. Experimental Test Report: Several different strengths of spring have been tested from 1000 to 3500 lbs. per inch. The strength recommended is 1500 lbs. per inch. To be used in conjunction with .940" worm on existing cars. Road Test Report: Tested in France by PN{Mr Northey}, CWB, and Hs.{Lord Ernest Hives - Chair} When used in conjunction with .940" worm, found to be an improvement. [Stamp: RECEIVED 15 JUN 1926] 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. If changeover 5.5d. done at Works. 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} 9.6.26. SIGNATURES | DATE | REMARKS MR. C. JOHNSON C.W.B. | 9.6.26 | Agreed, CWB. This is a very good combination for general French conditions. More experience on a broader basis is required before it can be selected as the very best. MR. E.{Mr Elliott - Chief Engineer} JOHNSON | 15.6.26 | agreed B MR. ROYCE | 9.6.26 | Agreed, FHR. I recommend this as the best compromise, and for the .720 large dia. worm one of 2000 lbs. per in. for the same reason. MR. WORMALD | 4.6.26 | Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE | 8.6.26 | Agreed. Rs.{Sir Henry Royce's Secretary} MR. DAY | 7.6.26 | Agreed. Da.{Bernard Day - Chassis Design}, subject to result of 10,000 miles test. MR. BAILEY | 7.6.26 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 8.6.26 | Agreed, as I understand from those who have tested the above that there is no trouble of low speed wobbles. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT | 9.6.26 | Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY | 7.6.26 | Agreed. PN.{Mr Northey} MR. HIVES | 4.6.26 | Agreed. E.Hives. | ||