Adjustments to rear leaf springs and shackles to accommodate new front coil springs.
| Identifier | ExFiles\Box 100\1\ scan0184 | |
| Date | 2nd June 1938 | |
| 44b also 84b and 66b. Ds. from Rm {William Robotham - Chief Engineer} /AFM. {Anthony F. Martindale} c. Ry. c. Da {Bernard Day - Chassis Design} /EV. {Ivan Evernden - coachwork} c. Ry/RHB. c. Ry/HS. {Lord Ernest Hives - Chair} Rm {William Robotham - Chief Engineer} /AFM {Anthony F. Martindale} 3/2.6.9.38. Rear Leaf Springs - B.III. B.50. W.60. W.80. We are using 5" deflection coil front springs on all the above cars and to match these we need 7" static deflection rear springs. This in turn necessitates 1.175" more bump clearance. With the present shackles, etc., this means the springs should be flat under the full load, i.e., 4 passengers of 150 lbs; the deflection is then 7". With the 50" spring especially, shackles 2" long are too short, and will have to be lengthened to 3" or more. We understand this is being done by raising the top end of the shackle link which will not affect the spring, but should the bottom end be lowered, the spring camber is altered. 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).