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).
The methods for steadying the side wheel carrier with a diamond engine mounting.
| Identifier | WestWitteringFiles\V\March1931-September1931\ Scan283 | |
| Date | 26th June 1931 | |
| AJL TO HS.{Lord Ernest Hives - Chair} FROM EV.{Ivan Evernden - coachwork} COPY TO R.{Sir Henry Royce} ORIGINAL RECEIVED EV{Ivan Evernden - coachwork}2/26.6.31. x5600 x7600. STEADYING THE SIDE WHEEL CARRIER. We note that with diamond engine mounting the side wheel carrier needs to be steadied either from the dash, or by a crossmember between the step-irons and passing under the engine. There appears to be two ways of doing the former. One is to so attach the frame to the dash that the latter holds it torsionally. We sent you a sketch suggesting that you tried this on P.2, and a design for this on Japan III. (N.Sch 3256) EV.{Ivan Evernden - coachwork}3/10.3.31. The other method is by a stay from the dash to the top of the rearmost wheel carrier tube. A design for this was got out in Derby when Da.{Bernard Day - Chassis Design} was there for use on P.2. and this design would be equally applicable to the 20/25.HP. We are wondering whether you have found some difficulty in opening the bonnet with this stay, now that the bonnet passes over the dash. We shall ask you to tell us this on the phone on Monday. The detachable crossmember under the engine is good but has the disadvantage that it has to be removed to drop the bottom half of the crankcase, and also it is not easy to get in past the starter motor and the brake ropes. We are going to suggest that stay as an immediate way out but we realise that it will be of no use if we wish to carry the bonnet say 3.000ins. over the dash as we believe Sales may ask us to do in the case of the 20/25.HP. car. We shall welcome your remarks on these points on Monday. | ||