Rolls-Royce Archives
         « Prev  Box Series  Next »        

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 plotting road speed against engine RPM for the Goshawk II & III gearboxes.

Identifier  ExFiles\Box 6\4\  04-page021
Date  26th November 1932
  
GOSHAWK II & III GEAR RATIOS
ROAD SPEED FOR ENGINE R.P.M.
LEGEND:
SOLID LINE: GOSHAWK III 4 SPEED BOX
DOTTED LINE: GOSHAWK II 3 SPEED BOX

THESE CURVES ARE FOR 11/50 AXLE RATIO
AND THE FOLLOWING GEAR BOX RATIOS:-

G III
1ST 3.73
2ND 2.33
3RD 1.51
TOP 1.00
REVERSE 3.20

G II
1ST 3.77
2ND 1.68
TOP 1.00
REVERSE 4.30

EFFECTIVE WHEEL DIA 18.314"

AXIS LABELS:
MILES PER HOUR
M.P.H. ON REVERSE
ENG. R.P.M.

GRAPH LABELS:
TOP GEAR BOTH BOXES
2ND SPEED G II
3RD SPEED G III
2ND SPEED G III
1ST SPEED G II
1ST SPEED G III
REVERSE G II
REVERSE G III

STAMP:
EXPERIMENTAL DRAWING
No. GH / 304
DATE 26.11.32
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙