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).
Letter from Rudge-Whitworth discussing main bearings, standardising Aerolite pistons, and asking for information on chromium plating and water cooling.
| Identifier | ExFiles\Box 133\1\ scan0066 | |
| Date | 1st November 1926 | |
| 8447C. 11/26. Rudge-Whitworth, Ltd. Continued Letter to Messrs.Rolls-Royce Ltd. Sheet No. 3. outer elements of the main bearings will have commenced to work outwards from their housings. Turning to your final question we are standardising Aerolite pistons on our 500 c.c. Touring Engine for the reason that we can run with considerable decreased clearances. The Slipper type piston is still in use on our Sports model, and we have not, as yet, made any comparisons between the power obtainable on these two designs. I should like to ask you two questions :- (a). Can you give me any further information on the chromium plating of cylinder bores which you kindly offered to do if I gave you a reminder? (b). Do you find that water cooling assists you to obtain or maintain a higher output than air cooling on our engine? Yours faithfully, For RUDGE-WHITWORTH LIMITED. g.L.Hack Chief of Tech. Dept. [Handwritten Note] Understand 50,000 miles without wear. We have no figures ourselves | ||