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).
Correcting previously issued weights for the Goshawk chassis and discussing performance implications.
| Identifier | ExFiles\Box 3\2\ 02-page096 | |
| Date | 20th November 1922 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to B. c. to W/Ev.{Ivan Evernden - coachwork} c. to BY.{R.W. Bailey - Chief Engineer} c. to PN.{Mr Northey} He4/LG20.11.22. GOSHAWK WEIGHTS. C.4536 X200 We regret that the Goshawk weights given in our memo. He2/L722.9.22 have proved to be incorrect. We did not care to rely on our own figures because they were out-of-date. The weights we gave you were supplied to us by another Dept. The latest weight which has a been accepted by all as being correct is :- Front 1146 lbs. Rear 1232 " Total 2378 " This is chassis complete with 4 tyres, battery, spare wheel carrier, step irons, instrument board, full of petrol, oil and water. The fact that the chassis is heavier than was anticipated when the weights given in Da{Bernard Day - Chassis Design}/Ev{Ivan Evernden - coachwork}4/WB.{Mr Brazier/Mr Bell}10.22 were got out, should not alter the guaranteed weight. When 7-G-11 was running recently in France, the complete car with passengers and all spares weighed - 4050 lbs. When running the car in the mountains we frequently had to come down to 1st. speed and on some of the steep hair-pin bends, there was no excess reserve of power. The proposed guaranteed weight of 39 cwts. is approximately 350 lbs. heavier than the weight we were carrying on 7-G-11. Below is a comparison between the guaranteed weight of the 40/50 and the guaranteed weight of the Goshawk. contd:- | ||