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 Goshawk and 40/50 car models regarding power, performance and hill climbing.
| Identifier | WestWitteringFiles\I\May1922\ Scan125 | |
| Date | 17th May 1922 | |
| R.R. 199 (500 H) (SD. 296. 15.3.17) M.P. 176549. E.{Mr Elliott - Chief Engineer} from Hs.{Lord Ernest Hives - Chair} ORIGINAL. Hsl/LG17.5.22. COMPARISON OF GOSHAWK. X2565 X4134 We are always getting criticisms as regards power at low speeds on Goshawk-11. No matter how we try to avoid it, the Goshawk car is always compared with the 40/50. We have been asked by CJ. whether any tests have been made to prove that the relative performance of the Goshawk is equal to the 40/50. The first proof of this, of course, is the dynamometer figures of HP. taken on the road wheels, but this is not convincing to them. We have considered that we might compare a Goshawk and 40/50 on the basis of displacement per mile per ton. We are certain, when the cars get in the hands of customers, to get these criticisms and it would be useful if we had some basis of comparison. We have compared roughly some results we have taken on the basis of displacement per mile per ton being equal on both cars, and find that the Goshawk has the advantage. This, of course, is only what one would expect owing to the better brake mean pressure. I should like to hear from you whether you consider this basis of comparison reasonable. We should only expect it to apply to hill climbing tests, not to maximum speeds - it is as regards hill climbing that we get criticisms. Hs.{Lord Ernest Hives - Chair} | ||