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).
Turning circles of a chassis, with comparisons of lock angles to other manufacturers like Delauney, Daimler, and Napier.
| Identifier | ExFiles\Box 20\5\ Scan018 | |
| Date | 18th November 1918 | |
| R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. To R.{Sir Henry Royce} from EH. c. to CJ. X426 EH4/LC.181118. 18th Nov. 1918. X.3404 RE - TURNING CIRCLES OF CHASSIS In reply to your telegram requesting turning circles on various cars, we have already replied by wire stating that our present car fitted with standard 895 wheels and tyres, turns 47ft. circle on right hand lock and 44ft. circle on the left hand lock. We hvae looked up our records of particulars of other carsand although we have not got the turning circle we have a record of the angle of the pivots. When on full lock the present R.R. car actually measured is 31° right hand lock 37° left hand lock. The drawing gives 31° and 38°. The Delauney Belleville is 29° and 33°. The Daimler 30° and 32°. The Napier 27° and 29°. The turning circle would then depend on the wheel base of the car. The only complete car we have available is the Packard. We can tell by the appearance that the lock of this is very small. If Mr. Royce wishes any furhter particulars we will sbtain them. EH. | ||