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).
Directive to prevent the sale of cars fitted with experimental helical engine gears.
| Identifier | ExFiles\Box 3\1\ 01-page136 | |
| Date | 11th March 1913 | |
| X182 COMPLETED. Experimental Engine Gears. Mr.Haldenby. Mr.Hives. Mr.Matthews. 11/3/13. AW CB/19/711313. Please note, no experimental car should be sold out of the firm fitted with experimental helical gears. Such gears should be put by and replaced by an entirely new set of engine gears from stock. per A.{Mr Adams} Wormald. | ||