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).
Comparison of the weights for the B.60 and B.80 engines.
| Identifier | ExFiles\Box 124\1\ scan0033 | |
| Date | 8th March 1939 | |
| 1044. COPY FOR FILES. To Rm.{William Robotham - Chief Engineer} Typed. 8.3.39. COMPARATIVE WEIGHTS B.60 & B.80 ENGINES. B.60. Engine complete with Dynamo, Fan and belts, Self Starter, Clutch, Clutch case, A.C. oil filter, Coils, Inlet and Exhaust Manifolds and carburetter, but with no oil or water, weighs 562 lbs. 8 ozs. B.80. Engine complete with Dynamo, Fan and belt, Self Starter, Clutch, Clutch case, General oil filter, coils, Inlet and Exhaust Manifolds and carburetter, but with no oil or water, weighs 690 lbs. Rm{William Robotham - Chief Engineer}/Cr.{Mr Cra???ster / Mr Chichester} | ||