Rolls-Royce Archives
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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 Goshawk starter motor.

Identifier  ExFiles\Box 35\4\  scan 114
Date  11th March 1922
  
MOTOR FORM 5.
X.3009 - BRAKE TEST OF STARTER MOTOR.
6
Date:- 11.3.22.
Motor under test:- R.R. Goshawk
Dia. of brake wheel:- 10"
No:- 6
Weight of pan and portion of rope 4 lbs. 14 ozs.
Reduction gear ratio:- —

Table of test results:
Headers: [Condition], Load in pan.(W), Spring balance reading.(S) (lbs. ozs.), Speed R.P.M., Amps., Volts., W-S (lbs), t (lbs), Torque (lb-ins), B.H.P., E.H.P., Efficiency.
Row 1: 7° Advanced | 7 | 1 : 6 | 925 | 130.0 | 9.40 | 5 : 10 | 10.5 | 52.5 | [empty] | [empty] | 4° advanced from std
Row 2: 5° advanced | 7 | 1 : 9 | 958 | 124.0 | 9.52 | 5 : 7 | 10.31 | 51.6 | [empty] | [empty] | 2° advanced from std
Row 3: 3° advanced | 7 | 1 : 2 | 933 | 128.0 | 9.44 | 5 : 14 | 10.75 | 53.85 | [empty] | [empty] | Now standard position

22.2.22.
  
  


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