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).
Brake test report for a Standard Goshawk starter motor.

Identifier  ExFiles\Box 35\4\  scan 138
Date  26th April 1923
  
MOTOR FORM 5.
X 4354

X.3009 - BRAKE TEST OF STARTER MOTOR. X.4384

Date:- 26.4.23. Motor under test:- Std. Goshawk. Dia. of brake wheel:- 10"
No.:- Weight of pan and portion of Rope - lbs. ozs. Reduction gear ratio:- 1

Load in pan (T)
Spring balance reading (S) lbs. ozs.
Speed R.P.M.
Amps.
Volts.
W-S (lbs).
T - t (lbs).
Torque (lb-inches)
B.H.P.
E.H.P.
Efficiency

1840 | 61.7 | 10.76 | 20.0 | .58 | .89 | .652
1466 | 79.6 | 10.41 | 30.0 | .70 | 1.11 | .630
1206 | 96.5 | 10.07 | 40.0 | .77 | 1.30 | .592
995 | 113.2| 9.73 | 50.0 | .79 | 1.48 | .534
820 | 130.8| 9.39 | 60.0 | .78 | 1.65 | .473
676 | 147.7| 9.05 | 70.0 | .75 | 1.79 | .419
555 | 165.0| 8.70 | 80.0 | .70 | 1.92 | .365
456 | 180.0| 8.40 | 89.0 | .64 | 2.03 | .315

22. 2.22.
  
  


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