Alternative wings and options for reducing the weight of running boards for car model 2.B.IV.
| Identifier | ExFiles\Box 84\1\ scan0140 | |
| Date | 7th June 1933 | |
| TO HS {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} FROM EV. {Ivan Evernden - coachwork} X4702. EV {Ivan Evernden - coachwork} 5/7.6.33. COPY WGT. C'ttee. RE ALTERNATIVE WINGS FOR 2.B.IV. We thank you for your Hs {Lord Ernest Hives - Chair} /Rm {William Robotham - Chief Engineer} 5/KT.2.6.33. re the above and note your remarks. We have ordered a set of wings for this car which will be like those of the first black saloon, I.B.III. with the exception that the wing will be carried right over the front of the wheel as shewn on N.Sch.3739. Herewith is a copy of our letter to Messrs Park Ward & Co. We have also ordered a set of running boards to suit and these we are trying to make lighter in various ways. We have calculated the weight of the step board to be made up in the following way in the case of the cars which you now have. Board---------I5.750 lbs. Aluminium- 5.050 lbs. Steel Channels- 6.750 lbs. Rubber Strips.- 2.460 lbs. ----------- 30.010 lbs. From this consideration it is apparent that the board constitutes 50% of the total weight. Using a solid board in spruce would reduce the weight of this item to II.250 lbs. and by framing the same the weight can be reduced to approx. 7 lbs. The aluminium cannot be reduced in weight, neither can the rubber, but by the use of aluminium channels in the place of Stainless Steel this item could be reduced to 2.500 lbs. The total weight of the board would then be I7.000 lbs. or 57% of the present weight. We are arranging with Park Ward & Co. to do some or all of these things. | ||
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).