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).
Investigation of a knock from the rear shock absorbers on chassis 3.AZ-112, suggesting an upgrade to the bolt size.
| Identifier | ExFiles\Box 95\4\ scan0073 | |
| Date | 3rd December 1936 | |
| Rm.{William Robotham - Chief Engineer} c to E.{Mr Elliott - Chief Engineer} c to BY.{R.W. Bailey - Chief Engineer} 342 Hd{Mr Hayward/Mr Huddy}/SB{Mr Bull/Mr Bannister}16/HR.3.12.36. re CHASSIS NO. 3.AZ-112. We recently investigated a complaint of a knock from the rear shock absorbers on the above Phantom III. Nothing could be found wrong with the shock absorbers except that the pinch bolts at the ends of the main levers appeared to have stretched, thus allowing the ball to become loose in the arm. These bolts were tightened up again and the noise cannot be reproduced. We would also like to point out that our experience on the 20/25 and Phantom II and Bentley shock absorbers shows that the 2BA. bolts securing the top cap to the connecting tube, were too weak and we had quite a few fail on the road. These were subsequently increased to 1BA. and then to 1/4". It is observed that these bolts on the Phantom III are still only 2BA. Do you not think that this point should be brought into line with the 25/30 HP. and Bentley? Hd{Mr Hayward/Mr Huddy}/SB.{Mr Bull/Mr Bannister} | ||