Data table showing Packard yoke movement and deflection measurements under varying loads due to braking torque.
| Identifier | ExFiles\Box 100\1\ scan0162 | |
| Date | 27th May 1938 guessed | |
| Packard Yoke Movement due to Braking Torque. Load. | Yoke movement rel. to frame. | Yoke bending A | Distortion of pivot pin etc. B | Needle bearing clearance C | Twist in Neck. D | Backward movement of torque arm E 0 lbs. | 0 .001" | 0 .0005" | 0 | 0 .002 | 0 | 0 .001 400 lbs. | .013" .015" | .013" .0135" | .008" | .008 .014 | 0 | .008 .010 800 lbs. | .040" .042" | .031" .031" | .015" | .016 .016 | .001 | .017 .019 1000 lbs. | .053" .055" | .038" .038" | .018" | .016 .016 | .002 | .021 .022 (Vertically in column B) NO HYSTERESIS (Vertically between columns D and E) NO HYSTERESIS Analysis of Deflections measured from the top of the Yoke. | ||
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).