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).
Communication regarding the use of split pins on Rudge-Whitworth detachable wire wheels at the Indianapolis Speedway Race.
| Identifier | ExFiles\Box 159\7\ scan0057 | |
| Date | 24th July 1920 | |
| Hs.{Lord Ernest Hives - Chair} from Wd.{Mr Wood/Mr Whitehead} c. to BY.{R.W. Bailey - Chief Engineer} Clis. X 421 Wd{Mr Wood/Mr Whitehead}3/NJ24.7.20. RE RUDGE-WHITWORTH DETACHABLE WIRE WHEELS. In reply to yours Hs{Lord Ernest Hives - Chair}3/LG22.7.20., Mr. John Pugh, of Rudge-Whitworth Ltd., has written us as follows:- "I have not full information of all the tyres and "all rims used in the 500 miles Speedway Race at "Indianapolis, but we believe that in most cases the "straight-sided wired on tyres were employed with the "usual split pins at the ends and at intervals round "the rim, the split pins passing through the channel "and through the detachable flange itself. Except "for the pressure of the walls of the tyre the flange "without these split pins will centrifugal off at "something like 80 M.P.H. Wd.{Mr Wood/Mr Whitehead} 1 tr.{Capt. F. W. Turner - Finance} abt. | ||