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).
Recommendation to build a new testing rig for clutches with a modification to the stud pitch circle diameter.
| Identifier | ExFiles\Box 129\4\ scan0143 | |
| Date | 16th February 1938 | |
| -2- We recommend that another rig be made for the use of K.{Mr Kilner} and N. which could be kept at N., and Bentley clutches which require testing owing to slip or fierceness could quickly be taken to N. for testing, the existing rig being retained at Derby. The new rig would be the same as the present one. except that the pitch circle diameter of the eight holding down studs should be increased by .300, so that the 11" clutch can be put on without removing the clamps. Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} | ||