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).
Record of modifications and testing procedures for engine components B-12 and B-14.
| Identifier | ExFiles\Box 140\1\ scan0145 | |
| Date | 8th March 1935 | |
| -2- Hs{Lord Ernest Hives - Chair}/Smth.28/KW.8.3.35. B-12 (1) Built up to EX.17268 according to memo. Hs{Lord Ernest Hives - Chair}/Smth.18/KW28.2.35. 3.63/1 D.B.S. Gears. New supercharger casing modified for this arrgt. R.R. dural rotor and rotor casing top half as in previous tests. EB.2258 camshaft. This will be used on bed for slow running tests and for power tests with new camshaft. (3) Built up to EX.17268 mod. to hs.{Lord Ernest Hives - Chair}1800. Diffuser supercharger Hs.{Lord Ernest Hives - Chair}1717. 4.84/1 American gears. EB.2258 camshaft. This scheme will use the new main supercharger casting and an R.R. rotor and rotor casing top half. This will be used on bed for slow running tests and for efficiency and noise tests with diffuser. (4) Supercharger fitted in dynamo position to Hs.{Lord Ernest Hives - Chair}1650. Other details to be decided later. B-14 (2) Built up to specification in Hs{Lord Ernest Hives - Chair}/Smth.3/KW.4.3.35. Old rotor casing used as removed from B-12 prior to (1). R.R. dural rotor and Graham rotor casing top half. 4.3/1 gears (D.B.S.). E.59699 camshaft adapted, ex B-12. After running in and checking for performance on bed, this will be put in a chassis. | ||