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).
Secret memo discussing the fitting of radius rods to an EAC 3 chassis for parallel control as an experiment.
| Identifier | WestWitteringFiles\L\July1924-September1924\ Scan109 | |
| Date | 14th July 1924 | |
| TO HS.{Lord Ernest Hives - Chair} FROM DA.{Bernard Day - Chassis Design} S E C R E T. DA{Bernard Day - Chassis Design}3/M14.7.24. E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. 3. X9770 X9420 X9240 X9421 Referring to the question of fitting radius rods to the EAC. 3. chassis, to provide parallel control, as explained to you verbally yesterday, I am not sure how far Mr. Royce has instructed you, but what he had in mind for the experiment was a ball end fitted into the same boss/was used for the original rod on EAC. 3., but of course with the ball turned upside down and made to such a length as to give you about 6" between the centre of the top plate of the spring and the ball centre, the object of this being to provide a job that could be quickly rigged up. The radius rod ends would be the same as originally instructed. The back end is much lower than the original radius rod, and a big plate would have to be bolted to the side of the frame with the ball end cantilevering off it to provide the back anchorage. As explained to you yesterday we think this back anchorage would be about on the present back spring eye/centre. What we should like you to determine is whether when one side is bumped fully up and the other fully down, there is very objectionable twisting in the part of the front axle between the two spring pads. DA.{Bernard Day - Chassis Design} | ||