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 Griffon and Buzzard engines regarding weight, power-to-weight ratio, and supercharger installation.
| Identifier | ExFiles\Box 179b\2\ img047 | |
| Date | 28th October 1932 | |
| -4- He/Yms.10/CT.28.10.32 be necessary between the rear of the supercharger and the aircraft bulkhead. The weight of the Griffon engine is 1693 lbs. which is 233 lbs. heavier than the Buzzard, and 43 lbs above the estimated contract weight, but the increase in power gives the Griffon a slightly better power/weight ratio - 1.593 lbs/BHP. compared with 1.77 lbs/BHP. Although the Griffon has a better power weight ratio than the Buzzard it is considered that the improvement is not enough and that the question of reducing the weight is investigated. Sketch No.746 and photographs A & B show views of the Griffon engine compared with the Buzzard. The photographs show that the small diameter entry blower has the appearance of being an 'after-thought' due to the distance of the blower from the engine - necessitated by the front entry. In order to accommodate a single entry blower, the external dimensions of this would probably stand out beyond the general line of the engine but it is suggested that the relative merits of a shorter engine may outweight this from an installation standpoint. Sg{Arthur F. Sidgreaves - MD}/H.R. YOUNG. | ||