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).
Status of an experimental Big Bore Bentley, detailing why it is unsuitable for use as a demonstration car.
| Identifier | ExFiles\Box 82\4\ scan0237 | |
| Date | 30th January 1936 | |
| W/S - Cx.{Major Len W. Cox - Advertising Manager} X200 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}11/KW.30.1.36. Big Bore Bentley. Replying to your memo. Cx.{Major Len W. Cox - Advertising Manager}3/KW.29.1.36. re the Vanvooren, this car is fitted with a mock-up experimental big bore engine of the bored out type. It is fitted with bearings which have been condemned. We could not take any responsibility for it being used as a demonstration car. In addition to this, it has experimental cross members fitted with Terraplane type engine mountings, and cantilever pedals. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||