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 detailing specifications for 40/50HP Chassis Crankshafts.
| Identifier | ExFiles\Box 14\2\ Scan031 | |
| Date | 2nd February 1929 guessed | |
| 40/50HP Chassis Crankshafts. Drawing No. | Shape of Web. | Dia: of Journal. | Dia: of Crankpin. | Front End Spring Drive. | Rear End Thrust. | Remarks. ---|---|---|---|---|---|--- E.75216. | Parallel. | 2.6245 | 2.1235 | Std:Prod: | Std:Prod: | Std:Prod:to end of E-2 Series. E.75413. | Parallel. | 2.6245 | 2.1235 | Std:Prod: | New design | EAC.7. E.76546. | 3.300 Oval. | 2.6245 | 1.8735 | New design. | New design No.5. | Tubular Rods-10-EX EAC.14. CANCELLED. E.76866. | Parallel. | 2.6245 | 2.1235 | New design. | Std:Prod: | EAC.8. CANCELLED. E.76878. | 4.000 Oval. | 2.6245 | 2.1235 | New design. | New design No.5. | EAC.8. E.76990. | 3.500 Oval. | 2.6245 | 2.1235 | Std:Prod: | New design No.5. | EAC.14. Continental E.76999. | 3.500 Oval. | 2.6245 | 2.1235 | Std:Prod: | Std:Prod: | Std:Prod:Ch:1-50 on F-2 Series. E.77245. | 4.000 Oval. | 2.6245 | 2.1235 | Std:Prod: | Std:Prod: | Std:Prod:Ch:51 on F-2 Series onwards. Handwritten text on the right side: X7010 | ||