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).
On demountable rims and straight-sided tyres, comparing American versions with proposed Dunlop-manufactured ones.
| Identifier | ExFiles\Box 159\1\ scan0088 | |
| Date | 20th July 1921 | |
| X3725 BJ. from Hs.{Lord Ernest Hives - Chair} X4058 X3725 Hs{Lord Ernest Hives - Chair}2/LG20.7.21. DEMOUNTABLE RIMS FOR STRAIGHT-SIDED TYRES. The demountable rims we have recommended for standard are identical in design to those which have been running on R-R Cars in America and R-R Cars in England successfully. The only difference at all is the fact that the wheels used in America are manufactured in America, whereas, the ones we propose to adopt will be manufactured by Messrs. Dunlop, Birmingham. We have had, however, sets of wheels made by the Dunlop Company and consider that in some respects they are better than the American wheels. As regards straight-sided tyres. The tyres we have recommended for standard are identical to those which have been tested. There is a risk, of course, with the tyres, of getting a bad batch, but this applies equally to the beaded edge as it does to the straight-sided. Hs.{Lord Ernest Hives - Chair} | ||