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).
Graph of road speed against engine RPM for Goshawk II & III gear ratios.
| Identifier | ExFiles\Box 75\1\ scan0304 | |
| Date | 15th December 1924 | |
| GOSHAWK II & III. GEAR RATIOS ROAD SPEED FOR ENGINE R.P.M. --- GOSHAWK III. 4 SPEED BOX. -- -- GOSHAWK II. 3 SPEED BOX. THESE CURVES ARE FOR 11/50 AXLE RATIO AND THE FOLLOWING GEAR BOX RATIOS:- G III. 1. ST.{Capt. P. R. Strong} 3.73 2. ND. 2.33 3. RD. 1.51 TOP 1.00 REVERSE 3.20 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} II. 1ST 3.17 2 ND 1.63 TOP 1.00 REVERSE 4.30 EFFECTIVE WHEEL DIA IS 31.4" AXIS LABELS: MILES PER HOUR M.P.H. ON REVERSE ENG. R.P.M LINE LABELS: TOP GEAR BOTH BOXES 3RD SPEED G.III. 2ND SPEED G.II. 2ND SPEED G.III. 1ST SPEED G.II. 1ST SPEED G.III. REVERSE G.II. REVERSE G.III. STAMP: ROLLS-ROYCE LIMITED. PRINT ROOM 15 DEC. 1924 DERBY. | ||