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).
Issues with Hartford shock absorbers, including sheared locking pins and incorrect supplied parts.
| Identifier | ExFiles\Box 51\4\ Scan097 | |
| Date | 14th June 1924 | |
| 44426 W.C. (Strikethrough) c. EP. {G. Eric Platford - Chief Quality Engineer} c. Hs. {Lord Ernest Hives - Chair} c. Mr. ----- BY {R.W. Bailey - Chief Engineer} /C11/H. 14.6.24. --------------------- HARTFORD SHOCK ABSORBERS. --------------------- Several cases have been reported to us in regard to the locking pin which prevents the Adjustment Bolt turning round, having sheared, thus making it impossible to make any further adjustment without completely dismantling the shock absorber and fitting a new bolt. In addition to this, we have had cases where drivers have desired to make adjustment to the Shock Absorbers, and due to the fact that the bolt turned round as explained above, they were not aware that the friction had not been increased. We hand you herewith a few washers which are supplied with the Trunnion Pins of these shock absorbers, and would draw your attention to the several differences, namely, the thickness of the washers varies considerably, the hole which is supposed to be in the centre of the washers has been punched in any position, and materials of various qualities and finish have been used. We also hand you herewith two types of spring plates which are being fitted to shock absorbers we are receiving, namely, some with a black finish which are made of thick material, and others which are made of two plates. When this matter was taken up with the makers some time ago, we believe they informed us that the correct type are the double spring plates, but from the sample we are submitting it would appear that they are not made of the proper material, as they take a permanent set. We are disappointed to find that we are still having these difficulties, as we thought that the matter had been made perfectly clear to the makers some time ago, and we are of the opinion that the matter should be taken up Contd. | ||