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).
Conclusions of tests aimed at resolving frame and radiator vibrations, or 'jellying'.
| Identifier | ExFiles\Box 28\5\ Scan019 | |
| Date | 12th March 1930 | |
| To R.{Sir Henry Royce} From Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} (Held up). c. to Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} c. to Rg.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} Da.{Bernard Day - Chassis Design} c. to Oy. Ep.{G. Eric Platford - Chief Quality Engineer} c. to Hn.{F. C. Honeyman - Retail orders} MX.{John H Maddocks - Chief Proving Officer} c. to PN.{Mr Northey} Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} S/MJ.12.3.30. X.457 X.7250 X.7380 FRAME AND RADIATOR JELLYING. We have now concluded a series of tests stiffening the front end of the frame and mounting the hydraulic dampers on the front of the engine. Whilst we have not been able to try out these modifications on 1-WJ., our model car for this fault, the results we have obtained on other cars shew that neither of these alterations is likely to prove a complete cure for the trouble if the spare wheels are carried at the rear, and we are not satisfied with any cure that will not deal with these conditions. Therefore, whilst the improvements obtained will be applied to the car about to run 10,000 miles, we are continuing our investigations on body and engine mounting and also on the frame behind tha dashboard. We have conducted a large number of experiments on the bumper rig and the attached sheet shews some of the results obtained, though we have not yet completed confirmatory tests on all of them on the road. We have measured on this rig the frequency and amplitud of the axle movement and our results confirm that the frequency is exactly the same as that of the radiator. Nothing we have | ||