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 of Bentley & Rationalised Axle Ratios with corresponding pinion and wheel part numbers.
| Identifier | ExFiles\Box 98\1\ scan0178 | |
| Date | 7th November 1940 guessed | |
| BENTLEY & RATIONALISED AXLE RATIOS. RATIO PINION WHEEL RATIO PINION WHEEL 10/41. GB.609 GB.186 11/43. GB. 798 GB.405 10/41. GB.2166 GB.186 11/43. GB.2167 GB.405 10/41. GB.2078 GB.186 11/43. GB.2163 GB.405 10/41. GB.2351 GB.186 11/43. GB.2353 GB.405 10/41. GB.3430 GB.186 11/43. GB.4592 GB.4593. 10/41. GB.4297 GB.186 10/41. GB.4901 GB.4902 10/41. GB.5014 GB.5015 12/41 GB.2227 GB.2226 12/41 GB.4994 GB.4995 12/41 GB.4767 GB.2226 10/43 GB 1501 GB.1502 11/41 GB.5340 GB.5339 10/43 GB 2148 GB.1502 11/41 GB.4591 GB.4510 10/43 GB 2352 GB.1502 11/41 GB.4958 GB.4957 10/43 GB 3439 GB.1502 10/43 GB 3559 GB.1502 10/43 GB.3867 GB.1502 8/37 GB 3378 GB. 3377 10/43 GB.4302 GB.4925 10/43 GB.4646 GB.4647 9/37 GB 3487 GB. 3488 10/43 GB.3439 GB.4925 10/43 RG{Mr Rowledge} 700 GB.4647 12/43. RG{Mr Rowledge} 130 RG.{Mr Rowledge} 131. 13/43 GB.5354 GB 5355 | ||