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).
Proposed semi-isolation scheme for a Phantom scuttle and outlining objections to it.
| Identifier | ExFiles\Box 53\4\ Scan183 | |
| Date | 13th June 1928 | |
| to EV.{Ivan Evernden - coachwork} HS.{Lord Ernest Hives - Chair} from EV.{Ivan Evernden - coachwork} copy to W.D. ORIGINAL X4613 EV{Ivan Evernden - coachwork}2/13.6.28. SEMI-ISOLATION OF SCUTTLE. PHANTOM. We understand that the semi-isolation scheme which it is proposed to use consists of four rubber washered bolts placed, two close to the top of the dash and one each side just below the dash corners. The intervening space is filled in with rubber strip. This was shewn in BY/Cgh{W Clough}9/G.17.4.28, BY4/G.9.6.28 and L.F.1082. In our Da{Bernard Day - Chassis Design}/Ev{Ivan Evernden - coachwork}2/M20.4.28. to Hs.{Lord Ernest Hives - Chair} we asked for more information and made certain objections to the scheme, based on our experience of a similar scheme on the early Twenties. To this memo we have received no reply. The writer agreed to the standardisation on the assumption that the only bolts used would be those two near the top of the dash, and that the continuous strip of rubber would be Sorbo. The objections to the scheme as proposed are:- (1) If the continuous rubber strip be not very soft rubber such as sponge rubber, because it has an area of about 80 sq.ins. it would not allow of any fore and aft movement between the scuttle and dash, causing bonnet knocks at the shoulders and fracture of the dash at the base in the case of the cast dash. The bolts cause a local depression of the rubber and the straight edge of the dash is distorted. (2) The maximum fore and aft movement occurs at the shoulders. We do not wish to have anything but sponge rubber here. The proposed bolt in this position, even though it is rubber washered, would cause bonnet knocks and would fracture the cast dash. Derby urged the use of these bolts because the very raked column of the Sports Car pulled the corner of the dash about. 14.EX. is perfectly satisfactory without these bolts. | ||