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).
Torque test report for an E.A.C. G2 motor armature at crawling speed.

Identifier  ExFiles\Box 64\1\  scan0228
Date  9th July 1926
  
MOTOR FORM 3.
TORQUE TEST OF MOTOR
armature
(at given speeds)
Date:- 9-7-26
Motor under test :- E.A.C. G 2.
Armature Speed:- Crawling (Main)
No:- Epicyclic
Reduction gear ratio:- 96 to 31.
Dia. of brake wheel:- 24"
Weight of pan and portion of rope:- 5 lbs. 0 ozs.
Load in pan (lbs) (W) | Spring balance reading (S) lbs. ozs. | Amperes. | Field volts. | Arm. volts. | Total volts. | Field Ohms. | Arm. Ohms. | Total Ohms. | W-S (lbs) | T-t (lbs) | Brake Torque (lb-inches)
28 | 12 0 | 204.0 | 3.30 | 1.80 | 5.10 | 0.0162 | - | - | 16.00 | 21.00 | 252.0
26 | 11 10 | 196.0 | 3.15 | 1.80 | 4.95 | 0.0161 | - | - | 14.375 | 19.375 | 232.5
24 | 10 10 | 176.0 | 3.10 | 1.60 | 4.70 | 0.0176 | - | - | 13.375 | 18.375 | 220.5
22 | 10 2 | 164.0 | 2.73 | 1.50 | 4.23 | 0.0166 | - | - | 11.875 | 16.875 | 202.5
20 | 9 6 | 156.0 | 2.65 | 1.50 | 4.15 | 0.0170 | - | - | 10.625 | 15.625 | 187.5
18 | 8 8 | 148.0 | 2.50 | 1.50 | 4.00 | 0.0169 | - | - | 9.500 | 14.50 | 174.0
16 | 7 11 | 136.0 | 2.20 | 1.40 | 3.60 | 0.0162 | - | - | 8.310 | 13.31 | 159.7
14 | 6 6 | 129.0 | 2.10 | 1.25 | 3.35 | 0.0163 | - | - | 7.625 | 12.625 | 151.5
20.8.25.
  
  


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