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).
Experimental modifications to the Goshawk II foot brake leverage.
| Identifier | WestWitteringFiles\M\October1924-December1924\ Scan24 | |
| Date | 25th October 1924 | |
| TO EY. FROM DA.{Bernard Day - Chassis Design} ORIGINAL DAL/M25.10.24. Copy to HS.{Lord Ernest Hives - Chair} GOSHAWK 11. FOOT BRAKE. X4258 X4259 Mr. Royce wishes to experiment with increasing the leverage on the above brake 50%. This would make it about 50 to 1 between the pedal and the cam links. Experimentally no doubt it might be done by merely increasing the length of the sheet metal lever on the differential, but this puts up the torque on the differential shafts, and might cause a feeling of sponginess which would give a bad impression. We think the best way would be as indicated on N.scheme 1861., herewith, to shorten the length of the lever A.{Mr Adams} to 3", which seems as short as possible, and then increase the sheet metal lever B.. only just enough. We have proposed that clearance between the cable jaw and the bracket carrying the brake gear should be obtained by either pushing the lever A.{Mr Adams} out about .1", or by pushing the bracket and hand brake lever in by a similar amount. Would you please choose the one that is most convenient. The ropes will not be quite in line, but this is not important. DA.{Bernard Day - Chassis Design} [STAMP: RECEIVED 28 OCT 1924] | ||