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).
Tests concerning tyre roll, wheel balance, and the effects of unequal tyre pressures.
| Identifier | ExFiles\Box 71\4\ scan0294 | |
| Date | 10th July 1925 guessed | |
| - 2 - tyres roll over and are more or less trying to tear them- selves away from the wheel. It is a very unsafe feeling. The lean of the pivots, as far as we can check them, is : N.S. ............ 1/16" (.062") O.S. ............ 3/16" (.187") We are, to-day, trying with the wheels unbalanced 1/2 lb. approximately. We are at present engaged on these tests. We have not tried the effects of unequal tyre pressures, but will do so. We take it that you mean say 60 lbs. N.S.R., and 30 lbs. O.S.R., and vice versa. Please note that during these tests the engine is constantly tightening up, but we are endeavouring to nurse it as much as possible. G.W.Hancock. | ||