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).
Potential modification to the bell crank and lever for the Phantom III brake mechanism.
| Identifier | ExFiles\Box 92\4\ scan0138 | |
| Date | 28th January 1936 | |
| Martindale +306 BY.{R.W. Bailey - Chief Engineer} c. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. RHC{R. H. Coverley - Production Engineer}/H.Smith. E.2/HP.28.1.36. Phantom III - Brake Mechanism. With reference to the bell crank lever G.84260 used on the brake mechanism, and also lever G.84297, both of which are fitted with spring ring retainers preventing the brake mechanism dropping the push rod, these details at the moment only specify .062" diameter locking wire buried to .025" of this depth. Although the wires on these levers as tried up seem quite safe on the model I think we ought to decrease the bore of the opening from .550" to .525" to make sure that the wire is buried just over half its depth, namely .0375". Would RHC{R. H. Coverley - Production Engineer}/H.Smith kindly confirm that the wire can be squeezed through this diameter on the lever without taking a permanent set. E.{Mr Elliott - Chief Engineer} | ||