Design of the Goshawk Spring Drive & Damping Flywheel, specifically the flywheel stud locking mechanism and the starting dog washer material.
| Identifier | ExFiles\Box 79\3\ scan0125 | |
| Date | 15th March 1921 | |
| R.R. 235a (100 T) (S.H. 798. 10-12-20) Ch.2948 MAR 15 1921 RECEIVED Hs. {Lord Ernest Hives - Chair} from BY X.3575 X.3525 X.3575 BY7-P15.3.21. GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)). SPRING DRIVE & DAMPING FLYWHEEL. Referring to the Flywheel Stud E.50018, and the proposal to lock same by expanding the end of the Stud with a Mandril driven in to a .080" hole, I would like you to watch this particular point, as it does not appear to me that the proposition as it stands is likely to be of any real value. It is difficult to imagine the end of the stud being expanded, as shown on the drawing, in the manner indicated. We notice by reference to the Lec, and to our details, that the Starting Dog screws up against a red fibre washer, or what we assume to be red fibre owing to the dimensions of same. I think this is wrong, as if the fibre is moist when it is erected it is likely to shrink in service, owing to the warmth, and allowing the Starting Dog Nut to get loose. I therefore propose trying a soft aluminium washer of smaller dimensions, which could be produced from an aluminium tube. BY. {R.W. Bailey - Chief Engineer} | ||
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).