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 friction dampers for engine mounting to reduce vibrations.
| Identifier | ExFiles\Box 74\4\ scan0098 | |
| Date | 3rd October 1923 | |
| R.R. 755 (10H) (SL 72 18-7-23) MP 274954B. Y 4604 COMPLETED 7.11.23. STANDARDISATION of CHASSIS PARTS. Description of Parts. FRICTION DAMPERS TO ENGINE MOUNTING. Origin: To reduce vibrations. Experimental Test Report: Tests have proved that by adding friction dampers & fixtures to the front end of the present engine mounting, we reduce the amount of vibration. Road Test Report: Tested experimentally on 3 cars. This device can cause no harm. The friction is not sufficient to hold the engine against frame distortions. Box [X No. 4604]: 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. £ 0. 3. 4 Weight of New Part. Cost of New Part. £ 1. 14. 6 Difference per Car. Difference per Car. £ 1. 11. 2 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/JW 15.10.23. SIGNATURES | DATE | REMARKS MR. JOHNSON | | MR. B. JOHNSON | 7.11.23 | agreed MR. ROYCE | 9.10.23 | Agreed. FHR. MR. WORMALD | 3.10.23 | Agreed. Wor.{Arthur Wormald - General Works Manager} Urgent. MR. ROWLEDGE | 3.10.23 | Agreed. Rg.{Mr Rowledge} MR. DAY | 5.10.23 | Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY | 3.10.23 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 3.10.23 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} Of vital importance to adopt immediately and be able to apply retrospectively if designed. MR. ELLIOTT | 8.10.23 | Agreed. E.{Mr Elliott - Chief Engineer} It is presumed that the sheet refers to temporary scheme Lec.1768. It is suggested (and R.{Sir Henry Royce} says "put the suggestion to Derby") that the friction discs & frame pads etc. of permanent sch.Lec.1774 could be embodied in this scheme for immediate std., with obvious advantages. MR. NORTHEY | 4.10.23 | (Agreed. PN.{Mr Northey}) MR. HIVES | 6.11.23 | (Agreed. Hs.{Lord Ernest Hives - Chair}) | ||