Brake drums and shoes for the first 100 Wraith cars.
| Identifier | ExFiles\Box 7\7\ X 606 Brakes-page103 | |
| Date | 28th January 1938 | |
| To Sy. from Rm {William Robotham - Chief Engineer} /AFM. {Anthony F. Martindale} c. Ds. c. HHC. 8 606 Rm {William Robotham - Chief Engineer} /AFM. {Anthony F. Martindale} 4/MH. {M. Huckerby} 28.1.38. WRAITH BRAKES - 1st. 100 CARS. As the brakes on 26.G.VI are satisfactory, we think that iron drums should be instructed for the 1st. 100 Wraith cars. The question of shoes is more complicated. The cast steel rear shoes are fitted with tipping shoes, which, however, we have lacked solid. No squeaks have occured. Previous shoes have not had tipping shoes, and with Thermoid linings, no squeaks occur on the rear brakes. Subject to the 10,000 miles test not showing otherwise, we see no reason why the rear brakes should be fitted with tipping shoes. No steel shoes without tipping shoes are drawn. We, therefore, say that cast steel shoes with tipping shoes should be fitted to the 1st. 100 cars, but on no account should any expensive dies be put in hand. Works would greatly appreciate not having to use tipping shoes. The front shoes on 26.G.VI have no tipping shoes, we have got good results by panelling the shoes instead. Here again, we say that for the first 100 cars shoes with tipping shoes (exactly the same as for the first six chassis) should be fitted, but that sand castings should be used. These shoes are aluminium. If the instructions for Works could be delayed a little, then we might be able to recommend that on the rear shoes at least, no tipping shoes should be fitted; but at the present juncture we think it would be most unwise to do so. Rm {William Robotham - Chief Engineer} /AFM. {Anthony F. Martindale} | ||
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).