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).
Discussions with Cornercroft Ltd. regarding the fitment and dithering issues of Bentley V wheel covers and discs.
| Identifier | ExFiles\Box 160\1\ scan0138 | |
| Date | 24th August 1939 | |
| To BY/Mtn... from Da{Bernard Day - Chassis Design}/Ev.{Ivan Evernden - coachwork} 1346 c. LA{L. A. Archer} c. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Da{Bernard Day - Chassis Design}/Ev.{Ivan Evernden - coachwork}1/N.24.8.39. Bentley V.{VIENNA} Wheel Covers & Wheel Discs. Mr.H.F.Hope of Messrs. Cornercroft Ltd., called on us yesterday morning, bringing with him a Bentley V.{VIENNA} wheel, with wheel cover and inner wheel disc fitted. We discussed the request of JLE.{J. Lee Evans - Chassis Test Manager} that the wheel cover should be imprisoned between the conical washer of the fixing bolt and the cone on the wire wheel hub. It appears that JLE.{J. Lee Evans - Chassis Test Manager} thought that this would stop the wheel dithering, and we learned from LA.{L. A. Archer} that all JLE{J. Lee Evans - Chassis Test Manager}'s conjectures are based on Bentley II. 'M' series chassis, which is an entirely different proposition to B.V. and therefore does not amount to much. It is impossible to do as JLE.{J. Lee Evans - Chassis Test Manager} requires, but the wheel cover is arranged so as to see the small amount of set-up due to the wheel carrier fixing bolt. One can see that a wheel in a Cornercroft cover will dither more than the plain wheel when mounted on a side spare wheel carrier, because in the former case the tyre is not supported in the wheel cover, and may not rest firmly on the bottom of the wheel well. If the wheel cover does not succeed in gripping the tyre sideways, the wheel may cantilever off its centre fixing, this being the only support. One of the reasons for desiring the wheel to be absolutely steady is that Sales wished to mount a driving mirror on top of it. We explained to Mr. Hope that the design which he showed us would have to be used on production as neither he nor ourselves knew of anything better. The real trouble of the B.II. was the frame and this will be overcome on B.V. With respect to the wheel discs, LA.{L. A. Archer} very kindly tried a wheel on the B.V. chassis and reported that the clearance of the inner disc with respect to both front and rear brake drums was satisfactory. The wheel and tyre loaned to Messrs. Cornercroft by the Exp. Dept. has been returned to them, and a production wheel and tyre as instructed, was signed for by Cornercroft's representative. Ev.{Ivan Evernden - coachwork} | ||