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).
Specification sheet detailing clearances for Bentley connecting rods made of Duralumin.
| Identifier | ExFiles\Box 85\3\ scan0091 | |
| Date | 15th May 1934 | |
| X214 C O P Y. 15.5.34. Clearances of Bentley Con: Rods (Dural). Big End Bore .00075". Big End Side Clearance (on shaft) .040 to .050". Small End Bore .0005". Small End Side Clearance (in piston) .008" to .020". | ||