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).
Recommendation and calculation for testing a stiffened brake yoke and associated components.
| Identifier | ExFiles\Box 127\1\ scan0368 | |
| Date | 27th May 1938 | |
| -2- Rm{William Robotham - Chief Engineer}/AFR.6/MH.{M. Huckerby}27.5.38. Our recommendation is that we only try the stiffened yoke for the time being, and that we continue to use our present proportion of front braking. We can introduce a thrust washer into the upper bearing if absolutely necessary, or use a spherical bearing. We will repeat these tests with the stiffened yoke and we are building a brake torque endurance rig. [Diagram of a beam with forces applied] Labels on diagram: M 1,000 lbs 400 lbs 1,400 lbs 14,500 lbs-ins a 10 Calculations below diagram: M = 14,500 - 4,000 - 1,000 a lbs-ins. = 10,500 - 1,000 a If a = 7.15", M = 3,350 lbs-ins. If a = 3.6", M = 6,900 lbs-ins. | ||