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).
Issues and solutions for radiator mounting on the Phantom II with diamond engine mounting.
| Identifier | ExFiles\Box 16\2\ Scan049 | |
| Date | 22th October 1931 | |
| To Ey. from Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} 67250. Hs{Lord Ernest Hives - Chair}/Les.4/KT.22.10.31. x7250 x7005 RADIATOR MOUNTING P.II. FOR USE WITH DIAMOND ENGINE MOUNTING. From the increased frame deflection with diamond mounting, we find it necessary to give the radiator considerably more movement than previously at its central mounting. We find the use of soft rubbers for E.80612. to be satisfactory. Dunlops recently supplied us with 12 of these rubbers under order No.18835. We consider it important that the radiator clearance to the radiator crossmember should allow at least .187" movement of the radiator control plunger F.82210 in each direction. With the present hard rubbers for the radiator control, every radiator crossmember has to be chipped. This will now become considerably worse with soft rubbers. On the bumper chassis we have had one radiator crossmember crack, this was due to the radiator continually hitting the crossmember. During tests on the bumper chassis using Sch.1529, where the radiator is located sideways from the crossmember, we have had three failures of radiator control studs E.80165. Although we consider the radiator control that we are adopting, less likely to break these studs, we think they could be easily improved upon. Even if the diameter is not increased, additional radii, where the stud fixes in the bottom tank, are advised. In order to prevent the large diameter of the control plunger F.82210 from rubbing against the cups, it is important that the radiator control stud should be exactly central with the cups F.82207. At the present we think these are fairly carefully fitted on production, as whilst the radiator is in position, the buffer flanges F.82204, having previously been temporarily nipped up, are tapped in position. We do suggest that a bust should be supplied to fit over the stud and inside the buffer flange to ensure centralisation. At the present the plunger F.82210 has two distance pieces E.80616/20 sweated to the plunger. We presume these are intended for adjustment, in which case we suggest the plunger and distance pieces being made in one. The top can be made sufficiently long to be cut to a suitable length for each car, a facing tool supplied to cut a radius and ensure a proper face for the top of the radiator stud. Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} | ||