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).
Simplification of the front shock absorber connecting rod design for the 40/50 chassis.
| Identifier | WestWitteringFiles\F\March1921\ Scan4 | |
| Date | 3rd March 1921 | |
| By.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c. Da.{Bernard Day - Chassis Design} c. CJ. ORIGINAL E7/3.3.21. X.4396. X.3461. 40/50 CHASSIS -FRONT SHOCK ABSORBER CON ROD X.3429. In reply to your query concerning the difficulty of making part No.7470 and your suggestion to build this part up from three pieces, Mr. Royce thinks the design of the complete connecting rod should be simplified. This rod was originally designed for the rear shock damper where the conditions render the top joint inaccessible and restricted in size, necessitating the use of a combined scheme of adjustment and lubrication for top and bottom joint. No such restrictions apply to the front shock damper rods and hence Mr. Royce wishes to use a simple piece of drawn tubing with an independent ball joint pin and brazed on each end rather similar to the pre-war pattern but with .750 balls and our improved pattern joint as in sketch below. N.Sch.844. This piece thicker than shown on your sketch. E.{Mr Elliott - Chief Engineer} | ||