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 front suspension bump buffers, spring clearance, and oil leaks from shock dampers.
| Identifier | ExFiles\Box 91\4\ scan0193 | |
| Date | 5th August 1935 | |
| -3- (9) Front Suspension Bump Buffers. The area of the steel pad which comes into contact with the buffers is too small. The sharp edge cut the original buffers. The area of the steel pad is larger of the latest scheme. The original rubber buffers were faulty, having been produced from rolled up strip material. (10) Spring clearance in front suspension pots. The outer spring has been rubbing badly, both inside the frame and inside the spring pots. These springs will be measured when the car returns to England. (11) Oil leaks from the front shock dampers. The worst of these is the joint between the spring pot and the frame. At 12 places the joint is only .075" wide. By deleting the chamfer on the flange F.87237 which goes through the frame, the width of the packing can be increased to .125". N.Sch.4573 shows all 24 bolts going through the spring pot flange. This means that the internal spring box to frame joint may be disturbed whenever springs are changed. We suggest therefore that 20 of the bolts should go through the spring pot flange, the other 4 bolts lying along the horizontal centre line should be used to secure the spring box to the frame when the spring pot is removed. We had asked for the studs to be sweated into the spring boxes to prevent oil escaping along the threads. However, we now find that the first spring boxes will be still alum-bronze and not steel as called for on the drawing. -cont'd- | ||