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 a reinforcing plate for fan blades.
| Identifier | ExFiles\Box 75\3\ scan0109 | |
| Date | 2nd November 1921 | |
| R R 765 (5 H) (S H 268, 29-9-20) G 2354 V3438 COMPLETED 8.2.22 STANDARDISATION of CHASSIS PARTS. Description of Parts. Reinforcing Plate to Fan Blade. Origin. To avoid fan blades breaking. Experimental Test Report. There have been a number of failures of fan blades on customers cars. The fractures show fatigue. The new scheme is a reinforcing plate of aluminium. This can be applied quickly. We consider this alteration essential when smaller fan pulley is used. Road Test Report. Fitted to 4.EX Car - run 300 miles. Box X No. 3438 Drawing No. E.20814/5. 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. Cost of Parts in Works which will be scrapped if commenced on :- Series......... £......... Series......... £......... Series......... £......... Signature of Exp. Dept. that above is correct. E.Hives. Weight of Old Part. Cost of Old Part. £ Nil. Weight of New Part. Cost of New Part. £ 0. 5. 9¼ Difference per Car. Difference per Car. £ 0. 5. 9¼ Signature of Mr. De LOOZE that above is correct. D/Rd. 30.11.21. SIGNATURES | DATE | REMARKS Mr. JOHNSON | 10.1.21 | Agreed. C.Johnson. Mr. JOHNSON | 10.1.21 | Agreed. BJ. No stock to be scrapped. Mr. ROYCE | 6.2.22 | Agreed. FHR. Do not know much of this cannot agree to continued increase Mr. WORMALD | 2.12.21 | Agreed. Wor.{Arthur Wormald - General Works Manager} possibly thicker blades or steel blades would have been less expensive and better improvement. Mr. BARRINGTON (struck through) Mr. Rowledge. | 16.11.21 | Agreed. Rg.{Mr Rowledge} Mr. DAY | 4.11.21 | Agreed. Da.{Bernard Day - Chassis Design} Mr. BAILEY | 3.11.21 | Agreed. BY.{R.W. Bailey - Chief Engineer} Mr. PLATFORD | 2.11.21 | Agreed. EP{G. Eric Platford - Chief Quality Engineer} Mr. NORTHEY EWT for R.R. Inc. | 22.12.21 | Agreed. PN.{Mr Northey} | ||