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).
Alteration note for an aero engine piston with a floating gudgeon pin.
| Identifier | ExFiles\Box 53\4\ Scan089 | |
| Date | 19th May 1924 | |
| RR 285A (OH) (SL 72 18-7-23) MP 274954A ALTERATIONS TO R.R. AERO ENGINE PARTS. COMPLETED 11.6.24 DATE 19.5.24 STAMP: CONDOR III Description of Parts: PISTON WITH FLOATING GUDGEON PIN Origin: To overcome trouble of lock plate coming adrift due to split pin working out of lock plate securing nut. Experimental Test Report: Engines fitted with this type of piston have now run 110 hours, including complete type test, without trouble Signature of Expl. Dept. that above is correct: RK. Weight of Old Part: 3 lbs. 14 ozs. Weight of New Part: 3 lbs. 12 ozs. Difference per Engine: 1.5 lbs. Cost of Old Part: £ Cost of New Part: £ Difference per Engine: £ Signature of Mr. De LOOZE that above is correct X No. 4603 Drawing No. E.24222 Part List E.24222 Air Ministry consent obtained: Yes "A"-Scrap and replace at all costs. "B"-Scrap and replace on those engines in Works. "C"-Scrap present stock and replace on all engines not yet handed to test. "D"-Use up existing stock. Alteration effective on future engines. Cost of Parts in Works and Stores which will be scrapped if commenced on:- SIGNATURES | DATE | REMARKS MR. JOHNSON | 5.6.24 | Agreed C. Johnson. MR. B. JOHNSON | 5.6.24 | Agreed BJ. MR. ROYCE | 6.6.24 | Agreed FHR. | I think we ought not to consider this satisfactory for long service & many overhauls. We have a car scheme which we think preferable. R.{Sir Henry Royce} MR. WORMALD | 3.6.24 | Agreed Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE | 20.5.24 | Agreed Rg.{Mr Rowledge} MR. DAY | 25.5.24 | Agreed Da.{Bernard Day - Chassis Design} MR. BAILEY | 20.5.24 | Agreed By.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 20/5/24 | Agreed EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT | 23.5.24 | Agreed E.{Mr Elliott - Chief Engineer} MR. HIVES | 21.5.24 | Agreed E.Hives. | ||