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).
Design and specifications of Goshawk 11 steering levers, comparing specimens and modifications.
Identifier | ExFiles\Box 49\4\ Scan134 | |
Date | 6th April 1922 | |
To BY.{R.W. Bailey - Chief Engineer} from Da.{Bernard Day - Chassis Design} c. to CJ. c. to Wor.{Arthur Wormald - General Works Manager} c. to Hs.{Lord Ernest Hives - Chair} c. to EP.{G. Eric Platford - Chief Quality Engineer} X4263 Da{Bernard Day - Chassis Design}2/M6.4.22. GOSHAWK 11. STEERING LEVERS. X.4263 X.4219. We thank you for your BY6/F3.4.22. You are quite right in supposing the specimen of F.50862 which we have here is considerably undersized. The specimen of F.50863 which you have just sent us, is very much better in that respect, and except for the exaggerated bend, looks to us to be quite a reasonable lever. We do not agree however that there is no difference in the torsional effect produced by the bend being set further along the stem. In effect we find that the torsional moment is increased on your lever from 1.8 to 2.3, as compared with ours. With reference to the required position of the bend we still cannot see why it should be any more than that shewn on N.sch 999 with the modification indicated on N.sch.1226. We have examined the 40/50 lever and find that the clearance for the stocking is no more than on Goshawk 11., and if anything slightly less. We send N.sch.1247 to illustrate this. We agree of course that there is less clearance from the spokes of the wheel but we do not think this can be helped since the 40/50 clearance is principally obtained by setting the wheel over. Finally, we think that your modifications indicated on the little blue print you sent us should make the lever amply strong enough, and if anything rather too much so. We accordingly send contd:- | ||