The resistance values for a new motor's windings and overall circuit.
| Identifier | ExFiles\Box 64\2\ scan0150 | |
| Date | 12th April 1928 guessed | |
| ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. Customer's No. of the new motor The total circuit resistance, however is much less and this would probably account for a proportion of the increased current, [strikethrough]light[/strikethrough]. The resistances of the R.R. motor K are as follows:- Teazer winding .36 ohms at 18°C Main winding .0038 " " Armature " (taken between 90° segments) .0135 ohms " " We have not done any brake tests yet on this motor. Signed H.E.W. This Sheet must be filed on completion of the work. Top Left Corner Text: RR 238 (180 BKS.) (DB {Donald Bastow - Suspensions} 461-8-12 24) MP 306975 | ||
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).