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).
3/16 inch cotton fabric clutch test.
| Identifier | ExFiles\Box 74\2\ scan0135 | |
| Date | 3rd May 1912 | |
| R.{Sir Henry Royce} R.{Sir Henry Royce} 148 (20 H) (W953 13.10.11) G 2051. X 356 3/5/12 Report on 3/16" cotton fabric clutch. One of these cones has been put thro the same test on dyno: as the 1/4" material that is picking up full load on 1st gear & slipped until a temperature of 150°C, the condition of the fabric after this test was excellent. On the road it has run 40 miles & up to now is quite as good as the 1/4". It should be used on old cars to replace the leather. The material frays at the edges & the rivets are not enough countersunk. enough, the material should have woven edges. More miles will be put on this clutch. | ||