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).
Comparison of yoke movement data between a Packard and a Bentley III due to braking loads.
| Identifier | ExFiles\Box 127\1\ scan0372 | |
| Date | 27th May 1938 | |
| Rm{William Robotham - Chief Engineer}/FWK.16/JH.27.5.38. Packard and Bentley III Yoke Movements Due to Braking Loads. The above phenomenon was investigated and the following data obtained. The endwise movement of the top bearing of the yoke relative to the frame amounted to .053" for the Packard. .106" for the Bentley III. This deflection was produced by pulling the car with a force of 1,000 lbs. The O.S. front brake alone was applied and this provided the resisting couple The following items show where the movement comes from. Bentley III. Packard. A.{Mr Adams} Yoke Bending. .068 .038". B. Distortion of lower pivot pin, housing etc. .043" .019". C. Needle bearing end plat and diametrical clearance. .017" .015". D.{John DeLooze - Company Secretary} Twist in neck .001" .002". ----- ----- .129" .074". E.{Mr Elliott - Chief Engineer} Backward movement of T.A. .022" .022" ----- ----- TOTAL = .107" .052". All deflections are measured at the top of the Yoke. | ||