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\ img033 | |
| Date | 4th June 1926 | |
| RR 755 (10H) (DB{Donald Bastow - Suspensions}130 12-9-24) M5 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" lead worm found to be an improvement. 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 done at Works: £ . 5. 5d. 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.W.B. JOHNSON | 15.6.26 | 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. B. JOHNSON | 15.6.26 | Agreed. BJ. MR. ROYCE | 9/6/26 | Agreed FHR. Recommends this as the best compromise. & for the 940 large dia. MR. WORMALD | 4.6.26 | Agreed. Wor.{Arthur Wormald - General Works Manager} when one of 2000 lbs/per in for the same reason. WR MR. ROWLEDGE | 8.6.26 | Agreed. Rz. MR. DAY | 7.6.26 | Agreed. Da.{Bernard Day - Chassis Design} 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 OE. MR. NORTHEY | 7.6.26 | Agreed. PN.{Mr Northey} MR. HIVES | 4.6.26 | Agreed. E.{Mr Elliott - Chief Engineer} Hives. [Green stamp across the document: PHANTOM] | ||