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).
Letter to Mr. Dever Waters comparing the design and safety of the Stanwell split side ring with the Goodyear ring.
| Identifier | ExFiles\Box 42\4\ Scan142 | |
| Date | 16th June 1920 | |
| Mr. Dever Waters, p.2 6-16-20 The Stanwell split side ring is locked in place, the Goodyear ring is not locked in place and depends entirely upon the tire inflation to hold the split side ring in place, and is much more liable to be thrown from its seat on the rim than our locking ring. As long as there is any air in the tire mounted on our type "C" rim, the side ring is positively seated over the top of the locking ring and it cannot come out. I am fully aware that in a test made in England on our rim by the Rolls-Royce Company, that they threw a locking ring which we admit is possible to do, but under the most unusual conditions and the car operating at an unusually high speed with punctured tire. Yours very truly, (Signed) J.{Mr Johnson W.M.} C. Swain, Vice President. JCS:LW COPY | ||