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).
Requirements for damper noise testing, links, suspension, and glands.
| Identifier | ExFiles\Box 152\1\ scan0335 | |
| Date | 27th May 1937 | |
| -2- DAMPER RIGS. E.{Mr Elliott - Chief Engineer} We need a rig for noise tests of rear dampers. The noise which is causing most complaint is audible on our dampers when there is practically no amplitude of movement. We, therefore, need to oscillate a damper lever at approx. 500 per min. for .250" stroke. DAMPER LINKS. As far as possible testing on rigs should be done with production types of connecting links. At the moment we are very interested in the ball spring loaded from the side LeC.5607. Although the Munro type of rubber link has been unsatisfactory, we must try other types of rubber links. It appears that we shall finally use rubber links for all our dampers. DAMPER SUSPENSION. In order to reduce damper noise to a minimum we want to try the effect of the damper mounted to the frame on rubber. If this is really useful we shall have to develop a satisfactory type of rubber mounting. GLANDS. Sg.{Arthur F. Sidgreaves - MD} has asked that we should try a rubber gland. Parts are being made to Rm.{William Robotham - Chief Engineer}379. The rubbers are being produced with three different interference fits on the shaft. We want to choose the greatest interference fit which is practical for assembly. ----- | ||