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).
Changing the axle ratio on the Goshawk-11 car for demonstration purposes.
| Identifier | ExFiles\Box 49\2\ Scan135 | |
| Date | 10th October 1922 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} c. to PN.{Mr Northey} c. to EP.{G. Eric Platford - Chief Quality Engineer} V4256 Hs{Lord Ernest Hives - Chair}1/LG10.10.22. GOSHAWK-11 AXLE RATIOS. X4256(crossed out) X4545 At Sales request we have changed the axle ratio on 4-Goshawk-11 car from 14/60 to 13/60. This has been done in order to make the car more suitable for demonstration runs. We suggest that axle ratios on the Goshawk should be treated in the same way as it has been decided to do in the case of the 40/50 H.P. All Goshawk demonstration cars whether open or closed, should be fitted as soon as possible with the low geared axle (13/60). There is no doubt that a much better demonstration performance can be made with a low geared car than can ever be done with the car fitted with the higher geared axle. The disadvantages with the lower geared axle which are - increased fussiness, increased wear and tear, and increased consumption, are not apparent on the short runs usually given on trials cars. We do not consider the difference in maximum speed between the 13/60 and 14/60 axles would be noticeable. Hs.{Lord Ernest Hives - Chair} | ||