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).
Gear box ratios for the Goshawk II (3 speed) and Goshawk III (4 speed) models.
| Identifier | ExFiles\Box 75\1\ scan0301 | |
| Date | 9th December 1924 | |
| 4247 To. Mr. Hives. c. RHC.{R. H. Coverley - Production Engineer} BY/TWD{T. W. D???Aeith}1/GK. 9/12/24. "GOSHAWK II". (3 SPEED). "GOSHAWK III".(4 SPEED). GEAR BOX. SECTION 6030. As requested we send you herewith both the "Goshawk III" 4 Speed Gear Box Ratios, and the "Goshawk II" 3 Speed Gear Box Ratios :- "Goshawk III" (4 Speed). :- ------------------------- First Speed. - 3.73. Second Speed. - 2.33. Third Speed. - 1.51. Fourth. - Direct Drive. Reverse. - 3.20. "Goshawk II".(3 Speed):- ----------------------- First Speed. - 3.17 to 1. Second Speed. - 1.63 to 1. Third Speed. - Direct Drive. Reverse. - 4.30 to 1. BY/TWD.{T. W. D???Aeith} [Signature] | ||