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).
Production test report for a Lucas Dynamo marked 85Z.
| Identifier | ExFiles\Box 36\4\ scan 257 | |
| Date | 12th February 1924 | |
| EFC. WA.{Mr Wallis}9. C O P Y. 12. 2. 24. PRODUCTION TEST OF LUCAS DYNAMO (marked 85Z). (1) Control brushes were found to be rather tight in their respective holders but were subsequently made O.K. Spring pressure O.K. except on one of the control brushes which requires the spring to be retarded to the 2nd. and 3rd. notches to acquire the necessary pressure. (2) Open circuit voltage 12.9 at 615 r.p.m. Cold. (3) Amperes after 20 mins. run 11.8. Volts " " " 14.4. Control brush required setting to arrive at the specification figures. (4) Open circuit volts at 715 r.p.m. = 15.0. Hot. (5) Electrical noise reasonable. Mechanical " almost nil. (6) Sparking occurs at one of the control brushes. N.B. This brush has the bad spring adjustment (See 1.) Brush appears to be bedding O.K. Other brushes O.K. H.E.W. | ||