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 the spring for closing the main throttle when a starter carburetter is fitted for the 40/50 model.
| Identifier | ExFiles\Box 171\3\ img144 | |
| Date | 6th December 1922 | |
| R.R. 735 (5 H) (S.J. '20). 15-10-21 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 3087. ORIGINAL Completed 2.1.23 STANDARDISATION of CHASSIS PARTS. Date 6.12.22. X No. 4390 Drawing No. Part List Description of Parts. SPRING FOR CLOSING MAIN THROTTLE WHEN STARTER CARBURETTER IS FITTED. Handwritten: for 40/50. Origin. Improved design. Experimental Test Report. The present design consists of a torsional spring. There is difficulty in producing consistent results. It is necessary that the variation in spring load on throttle shall not be very great. Handwritten: The improved part we wish to standardise has an extension spring. Road Test Report. Run 1000 miles on 49-GB Car. Fitted to 4.EX - run 500 miles. Signature of Exp. Dept. that above is correct. E.Hives. Weight of Old Part. Cost of Old Part. £ --- Weight of New Part. Cost of New Part. £ 4/6d. Difference per Car. Difference per Car. £ 4/6d. increase. Signature of Mr. De LOOSE that above is correct. IN/JW 15.12.22 [Decision Box] A Scrap and replace at all costs, including Chassis already delivered to customers. B Scrap and replace on Chassis in works. C [X] Scrap present stock and replace on all Chassis not yet handed to test. D Use existing stock Alteration effective on future Chassis. Cost of Parts in Works which will be scrapped if commenced on :- Series......... £......... Series......... £......... Series......... £......... Storekeeper advised re above: Storekeeper's Signature SIGNATURES | DATE | REMARKS Mr. JOHNSON (M.{Mr Moon / Mr Moore} B. JOHNSON.) | 2.1.23 | Agreed. BJ. Mr. ROYCE | 12/12/22 | As long as it is only an order understood a tension spring was to be fitted instead of Torsion one substituted on 4EX but perhaps this only requires to get adjusted. Mr. WORMALD | 15.12.22 | Agreed. Wor.{Arthur Wormald - General Works Manager} I now understand Mr. ROWLEDGE | 8.12.22 | Agreed. Rg.{Mr Rowledge} Torsion Spring is the one intended for standardisation Mr. DAY | 12.12.22 | Agreed Da{Bernard Day - Chassis Design} Makers Mr. BAILEY | 11.12.22 | Agreed. BY.{R.W. Bailey - Chief Engineer} Mr. PLATFORD | 9.12.22 | Agreed on behalf of EP{G. Eric Platford - Chief Quality Engineer}(away in U.S.A.) J.A. Maddocks. Mr. NORTHEY | 9.12.22 | Agreed. PN.{Mr Northey} [Blue Stamp Overlay] 40/50. H.P. CHASSIS 4HR | ||