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 into the phenomenon of radiator 'jellying', comparing it to 'high speed wobbles' and referencing the Phantom II.
| Identifier | ExFiles\Box 28\5\ Scan039 | |
| Date | 29th April 1930 | |
| CPX457 To R.{Sir Henry Royce} (Held up). From He/sn.{Mr Sanderson} He/sn.{Mr Sanderson}2/MJ.29.4.30. 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 Ds. Hy.{Tom Haldenby - Plant Engineer} RADIATOR 'JELLYING'. As a result of a number of tests both on the road and on the Bumper we can now say that this problem is similar to that of 'high speed wobbles' in its complexity, and it is improbable that any one simple move will be found that eliminates it fundamentally. Fortunately, by partially isolating the radiator from the oscillating system, the main cause of complaint i.e. the optical effect of the mascot movement, can be considerably reduced. The rest of our results indicate why we have run into the trouble on Phantom II, and have been most useful to us in teaching us a great deal about steering. Unfortunately, some of the results that give good steering and reduce 'jellying' such as carrying the spare wheels at the side, are diametrically opposed to good low speed riding. A.{Mr Adams} RADIATOR MOUNTING. At the suggestion of HS.{Lord Ernest Hives - Chair} we mounted the radiator on a single central support, restraining its movement to about .125" displacement of the mascot either side of the central position. This reduced the amplitude of the radiator cap, and to a certain extent, cut out the periodicity of the oscillation which is the feature that catches the eye. | ||