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).
Fault discovered in the Phantom III front brake mechanism which limits its effectiveness.
| Identifier | ExFiles\Box 92\4\ scan0196 | |
| Date | 14th September 1936 | |
| To E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to Nx. c. to JLE.{J. Lee Evans - Chassis Test Manager} c. to By.{R.W. Bailey - Chief Engineer} X306 Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}5/KW.14.9.36. Phantom III Brakes. As we told Da.{Bernard Day - Chassis Design} on Saturday morning, we have discovered a foul in the Ph.III front brake mechanism which prevents the brake shoes moving more than about two-thirds their maximum travel when the servo is on its stop. On the road this means when the brakes are fully adjusted that during a stop from high speeds one has quite good brakes for about half the stop, and then no further front braking is obtained. The foul occurs between the nut of the pinch bolt holding the small vertical rod inside the brake drum to the bell crank lever, on the yoke, and one of the three nuts on the top pivot cap. Temporarily on 33-EX we have turned the bolt round, filed away part of its head, and fixed it with a lock nut riveted over. As soon as the Design Dept. issue a proper scheme for overcoming the trouble, this will have to be fitted on all cars, including those which have already been delivered to customers. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||