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).
Experimental dynamo list detailing modifications and test statuses for various models.
| Identifier | ExFiles\Box 51\1\ Scan293 | |
| Date | 1st November 1923 | |
| X. 4383 1.11.23. X.4383 - EXPERIMENTAL DYNAMO LIST. Dynamo. Remarks. Chassis etc. Com done A. {Mr Adams} Old machine with unrevised main brush position. Now fitted with standard brushes bevelled. Commutator not specially undercut. 2GII. No B. Fitted with unbevelled brushes with heavier brush spring pressure. Commutator not specially undercut. Lab. No C. Set to 12 ampere production test. Unbevelled brushes and commutator not specially undercut. 6EX. No D. {John DeLooze - Company Secretary} Represent present standard with bevelled brushes and specially undercut commutator. 4-GII No E. {Mr Elliott - Chief Engineer} Bench experimental. -- No F. {Mr Friese} Revised to new standard, as D. {John DeLooze - Company Secretary} 49-GB. G. {Mr Griffiths - Chief Accountant / Mr Gnapp} Given to Test Dept. in place of No.625. H. {Arthur M. Hanbury - Head Complaints} Adapted to B.L.I.C. voltage regulator. No R3. Fitted with bevelled brushes of EG2 Morganite; commutator not specially undercut. 7-GII No X. Fitted with bevelled brushes of ECO material. GI. No 161. Fitted with armature with 2 coils per slot and standard bevelled brushes. 5-GII 278. Fitted with experimental brush tests. 438. 79-AO machine for examination. Lab. 470. Fitted with bevelled brushes of ECO material. 6-GII 562. Trailing edges of poles eased off. 3-GII. No 604. Up to date standard but rejected by EP. {G. Eric Platford - Chief Quality Engineer} as noisy. Lab. 625. Fitted with cast iron bracket. Std. bevelled brushes. Commutator not specially undercut. Lab. No | ||