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).
Technical memo regarding the standardisation of Dunlop twin-spoke wire wheels on 20/25 HP chassis.
| Identifier | ExFiles\Box 159\1\ scan0193 | |
| Date | 26th October 1931 | |
| X372-S W/S. to Hn.{F. C. Honeyman - Retail orders} from Hs{Lord Ernest Hives - Chair}/Ltd. Hs{Lord Ernest Hives - Chair}/Ltd.6/KT.26.10.31. DUNLOP WIRE WHEELS. x 5810. Hn{F. C. Honeyman - Retail orders}8/I/23.10.31. Twin spoke wire wheels become standard on 20/25 HP. chassis on the second half of 'T' series; there is at present no immediate prospect of their adoption on P.II, they have not yet been tried experimentally. From the point of view of wheel discs there is a considerable difference as compared with the present three spoke type. 20.G.IV. will be fitted with twin spoke wheels of 18" diam. (1" smaller than on the second half of 'T' series.) These wheels have only been recently ordered, if you are arranging to have discs made it would be advisable for the disc manufacturers to get in touch with Dunlops who will no doubt furnish them with the particulars they require. The piece number of the 18" twin spoke wheel is G.54976 and for the 19" wheel (2nd. half of 'T') - G.54354. Hs{Lord Ernest Hives - Chair}/Ltd. | ||