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 chassis parts concerning turbulent flow radiator tubes.
| Identifier | ExFiles\Box 16\2\ Scan001 | |
| Date | 18th October 1930 | |
| RR 785 (10M) (3-7-30) BM. 6/2571. COMPLETED 11.2.31. X7250. STANDARDISATION of CHASSIS PARTS. Description of Parts. TURBULENT FLOW RADIATOR TUBES. Date 18.10.30. X No. 7250 Drawing No. 5250 Part List Origin. To improve 20 HP. and 40/50 HP. Radiator efficiency. Experimental Test Report. This modification consists of putting four small bulges in the radiator tubes. Road Test Report. A gain of 5 °C has been measured at high speeds and 1 - 3°C at low speed full throttle. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part? £ Cost of New Part? £ Difference per Car. £ Signature from Cost Dept. that cost is correct. Sheet No. Ho 7500/7250/7250 GLH 28/1/31 & 29/1/31 Actions: 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. Cost of Parts in Works which will be scrapped if commenced on :- Series.........£......... Series.........£......... Series.........£......... INITIAL | DATE | REMARKS SG{Arthur F. Sidgreaves - MD} | 20.10.30 | Agreed sg{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 20.10.30 | Agreed FHR. WOR.{Arthur Wormald - General Works Manager} | 20.10.30 | Agreed Wor.{Arthur Wormald - General Works Manager} C. | | Agreed C. RG.{Mr Rowledge} | 20.10.30 | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 21.10.30 | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 20.10.30 | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 21.10.30 | Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 21.10.30 | Agreed AE. PN.{Mr Northey} | | -------- HS.{Lord Ernest Hives - Chair} | | STAMPS: PHANTOM II, 30 JAN XIX.. | ||