Change of axle ratios on the Goshawk-11 car for demonstration purposes.
| Identifier | WestWitteringFiles\I\October1922\ Scan53 | |
| Date | 10th October 1922 | |
| ORIGINAL. To R. {Sir Henry Royce} from Hs. {Lord Ernest Hives - Chair} c.c. to CJ. c.c. to R. {Sir Henry Royce} c.c. to Da. {Bernard Day - Chassis Design} c.c. to EY. - c.c. to PH. - c.c. to EP. {G. Eric Platford - Chief Quality Engineer} Hs {Lord Ernest Hives - Chair} 1/LG10.10.22. GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine))-11 AXLE RATIOS: X4256 At Sales request we have changed the axle ratio on 4-Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine))-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(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 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(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 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 gear 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} | ||
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).