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).
Letter from Rolls-Royce of America concerning the evaluation of an internal geared transmission from Automotive Research Corp.
| Identifier | WestWitteringFiles\U\August1930-November1930\ Scan071 | |
| Date | 6th September 1930 | |
| COPY OF LETTER REC'D FROM :- Rolls-Royce of America Inc. Springfield, MASS. OY.1. Sept.6th.1930. Rolls-Royce, Ltd., Derby, England. Attention of : Mr. A.W. Hives. INTERNAL GEARED TRANSMISSIONS. Have spent the day with Neracher and J.W. Pearson (Automotive Research Corp., Warren, Ohio) on the internal geared box. Am satisfied that this is what you ought to consider, on the score of - (1) Actual achieved silence. Two high gears indistinguishable in silence. (2) Ease of shift. (3) Cost of production. With increased volume and experience, this is now down (on Chrysler) to about £6 per complete gearbox (4 speed). Neracher, or rather the Automotive Research Corp. (which is he and Pearson) are going to do as follows :- (1) Send you a 4 speed box complete which you may or may not want to actually try in a 25. Anyway, you will want to pull it apart and examine it thoroughly. You will find I imagine, that considering the not very fussy workmanship, the silence achieved is phenomenal. (2) Send you drawings of the internals used in this box with full details as to materials, etc. (3) Send you drawings of a larger internal gear assembly suitable for 350 lbs. feet torque with their suggestions (which may not interest you) for the use of improved materials as compared with their present practice on the 'Imperial Eight' which has only about 300 lbs. feet. All this will be sent on consignment; i.e. if the box doesn't interest you, or you get finished with it send it back - | ||