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).
Table of calculations for dynamo tension and induction values.
| Identifier | ExFiles\Box 35\1\ scan 183 | |
| Date | 14th October 1921 | |
| M.R. 325A 100 T(S.H. 768, 10-12-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2947 X2713 EFS1/T14.10.21. To R.{Sir Henry Royce} from EFC. c to CJ. X.294 - DYNAMOS. X2713 Answering your note R3/G11.10.21, the tension along the lines of force for various values of the induction between the limits 5,000 and 7,500 is, for uniform distribution of field, according to the following table :- B. F lbs/sq.cm. lbs/sq." 5,000 2.235 14.42 5,500 2.705 17.45 6,000 3.218 20.75 6,500 3.775 24.35 7,000 4,375 28.22 7,500 5.025 32.40 EFC. [Watermark: DICKINSON BOND 1804 MADE AT CROXLEY MILL] | ||