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).
Scuttle isolation methods for the 20 HP model, comparing schemes from various coachbuilders.
| Identifier | ExFiles\Box 53\4\ Scan153 | |
| Date | 6th October 1926 | |
| to HS{Lord Ernest Hives - Chair} & EF from EV.{Ivan Evernden - coachwork} Hs.{Lord Ernest Hives - Chair} 4463 Hs{Lord Ernest Hives - Chair} EV{Ivan Evernden - coachwork}1/6.10.26. copy to H.{Arthur M. Hanbury - Head Complaints} BJ. SG.{Arthur F. Sidgreaves - MD} EHS. [STAMP: RECEIVED OCT 7 1926] SCUTTLE ISOLATION 20 HP The subject of your BY/Cgh{W Clough}/10/H.21.9.26. was discussed at the C.S.C. on Oct.1st. The present position is at follows:- Barkers, Hoopers, Windovers, and Maythorn all use, at variance with our instructions, a type of total isolation of the scuttle. They would use the scheme now standard on the Phantom were it not for the fact that our raked column needs to be held up by the coachwork. In no case is the R-R recommendation of flexible bolting between the scuttle and the dash and the column supported by the instrument board, to be found. BARKER SCHEME. Two flexible bolts between dash and scuttle, Inst. board on scuttle and off-side inst. board bracket only used as a steady for column of raked steering. HOOPER SCHEME. Total isolation of dash and scuttle. Instrument board carried on brackets and free from the scuttle. On raked columns the steering column is attached to the off-side bracket. The Barker scheme is good except that the inst. board bracket does not steady the column side-ways. They would like to have total isolation of the scuttle and the dash but they have been left to believe that should they do this the dash alone would not hold up the radiator. The Hooper scheme is bad in that the large relative movement between the inst. board and the scuttle is augmented by the mass of instruments suspended at the ends of the long cantilever brackets. We have therefore perfected the Barker scheme by providing a triangular stay to the raked column to replace the offside bracket which they have been using. In view of the trouble we have met with due to our recommendations being inadequate we wish to see this stay fitted as soon as possible. In view of this we have designed stays for the old and revised type of raked column. We do not agree with HS.{Lord Ernest Hives - Chair} that with the proposed scheme we shall be less rigid than we are at present. By at present we presume is meant the original R-R instruction which the coach-builders have found it is impossible to use. It is our suggestion that, in order to be agreed that the proposed scheme is better than either the Barker or the Hooper one, Derby should send a set of stays to "Sales" and arrange for them | ||