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).
Design position report detailing the status of modifications for Merlin C.1, C.II, and D engines.
| Identifier | ExFiles\Box 30\3\ Scan161 | |
| Date | 17th April 1935 guessed | |
| ITEM (8) DESIGN POSITION. MERLIN "C.1" ENGINE - CONTINUED. Oil supply to supercharger drive. Completed. Mod. to oil pump casing. Completed. Mod. to supercharger rear bearing breather. Completed. Modified supercharger gearing and tooth forms. Completed. Modified lower bearing for upper vertical drive. In hand. Strengthened idler gear bracket - oil pump drive. In hand. Improved lubrication of rocker gear. In hand. Investigation of cam and rocker action. In hand. Air intakes to suit various aircraft installations. In hand. MERLIN C.II ENGINE. Cylinder head:- modified coolant oassages and valve centres. In hand. Two stage water pump for evaporative cooling. In hand. Supercharger drive - roller bearing for rear layshaft bearing. In hand. MERLIN "D" ENGINE. Alternative crankcase construction. In hand. | ||