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).
Chassis lowering modifications for 20-HP and Phantom models by reducing packings.
| Identifier | ExFiles\Box 80\3\ scan0057 | |
| Date | 17th November 1927 | |
| V387 X1388 BY/HEB{H. Biraben}2/M.17.11.27. [Text crossed out] c. to Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} [Text crossed out] G.W. Y5420 [crossed out] X5410 X7410 X7420 20-HP. PHANTOM. E.A.C.14. LOWERING CHASSIS BY REDUCING PACKINGS. Kindly note the following:- EAC.14.- This chassis has been lowered at the front as follows:- (a) The front spring in the full load position has 1.000 camber (neg:) which lowers the car .500. (b) We have fitted Packings .125 thick instead of .750 as standard. This lowers the car a further .625 making a total of 1.125. (c) There is a possibility that 900 lbs. Front Springs will be required instead of 1000 lbs. as ordered, in which case the Chassis will be lowered a further .135. PHANTOM.- For "F2" Series onwards we have fitted a minimum thickness of Packing .125 thick to all chassis which lowers the car various amounts according to the poundage of springs fitted. The maximum amount any chassis can be lowered is .750, (when 900 lbs springs are fitted). 20-HP.- For "M" Series we have deleted the Packing under the springs which lowers the chassis .250 Maximum (when 600 lbs spring is fitted). We are sending this information to enable you to check your clearances. Will you kindly add a note to your drawing of the 20-HP Axle as follows,- "Sharp corners to be removed for "M" Series", referring to edges of spring pad. BY/HEB.{H. Biraben} [handwritten signature] | ||