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).
Modifications to the 'Goshawk 11' front spring and front dumb iron, including an alternative attachment method proposed by Mr. Royce.
| Identifier | ExFiles\Box 49\3\ Scan026 | |
| Date | 5th February 1921 | |
| To Da.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} c. to CJ. c. to Wor.{Arthur Wormald - General Works Manager} c. to Hs.{Lord Ernest Hives - Chair} c. to By.{R.W. Bailey - Chief Engineer} c. to EFC. X4261 E2/G5.2.21. X.4264. RE "GOSHAWK 11" FRONT SPRING AND FRONT DUMB IRON. LEC. 1339. On referring to the above drawing, would you kindly arrange, in accordance with Mr. Royce's wishes, to make this spring with a rolled eye on the rear end. This has the effect of dropping the top leaf at the rear end about .437", and leaves the spring with about .280 camber. So that the front spring cannot be erected the wrong way round, the front spring bolt should be increased from .5" to .562" diameter. This we think can be done without any alteration to the dumb iron stamping. The angular slope on the front spring will now be about 2 1/3 degrees, which it is hoped will be a suitable inclination for the steering pivots. E.{Mr Elliott - Chief Engineer} Mr. Royce proposes as an alternative to revetting, that the front dumb irons should be brased to the side channels by up-ending the side channel in a pot of molten brazing metal. He would prefer this to the rivetting if it is found practicable. | ||