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).
Braking test data for a Phantom, used as a defence against a dangerous driving charge.
| Identifier | ExFiles\Box 29\3\ Scan154 | |
| Date | 12th May 1925 | |
| To Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} X788 DA{Bernard Day - Chassis Design}4/M5.12.25. X.788 X.718 Y.S.+Co Mr. Minchin has obtained some figures timed by one of the Brooklands timekeepers - Mr.McKonnel - for pulling up distance on his Phantom. They took various tests. From 35 m.p.h. the car stopped in 36 ft. and from 25 m.p.h. it stopped in 19 ft. These figures agree very closely with a braking curve of the three litre Bentley which was published in 'The Motor' on Nov. 24. We have pointed out to Mr. Minchin that the co-efficient of friction is more than 1. He is using these pulling up figures in his defence against a charge of dangerous driving on Monday next. I am sending this information in case it may be of interest. DA.{Bernard Day - Chassis Design} | ||