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).
Concerns with Coachbuilder modifications to Phantom II subframes for brake drum clearance.
| Identifier | ExFiles\Box 14\8\ Scan175 | |
| Date | 5th December 1929 | |
| BY.{R.W. Bailey - Chief Engineer} c. HS{Lord Ernest Hives - Chair} c. DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork} c. J.E.S.Little Hall. +7380. EP{G. Eric Platford - Chief Quality Engineer}/Thn6/H5.12.29. SH re. PHANTOM II. SUBFRAMES. We are being continually worried by Coachbuilders, and shall be faced with a certain amount of expenditure from them in connection with the cutting away of the earlier subframes to clear the brake drums. The Coachbuilders inform us that in regard to the later subframes which they are receiving, and which have been cut away by us to give this clearance, that they are afraid the cut away will not be sufficient, as they have found it necessary to cut away considerably more on the earlier frames before the necessary clearance can be obtained. Up to the present we have not carried out the final test of a complete car fitted with the latest cut away subframe, so that we are unable to say definitely that the cut away is insufficient, but we are bringing this matter forward so that it can have further attention and the present cut away confirmed as being sufficient or increased before too many subframes are despatched. We shall be interested to have Mr. Evans' views of this in regard to cars in London. Some action should also be taken to specify the limits in regard to the vertical distance between the brake drum face and the side of the subframe. These seem to vary considerably, and the amount which is now cut away from the subframe may easily be lost by the subframe not being central with the chassis or the axle itself not being central with the chassis. As these limits must necessarily be fairly wide when they come to be figured out, some clearance will have to be given to allow for this. EP{G. Eric Platford - Chief Quality Engineer}/Thn | ||