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).
Design modifications for connecting rods on a 40/50 chassis.
| Identifier | ExFiles\Box 35\2\ scan 058 | |
| Date | 6th March 1918 | |
| To By.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c. to EFC. X 3429 E 2/G6.3.18. X.3400-RE CONNECTING RODS - 40/50 CHASSIS. In reply to your memo By16/T28219, would you kindly note the following points in connection with scheme No.357:- (1) The lightening hole in the connecting rod bolt should have a nice cigar shaped finish at the bottom, instead of the sharp shouldered drill hole shown - [Sketch of a trapezoidal shape with a curved top and hatched lines inside] (2) Three oil pipe clips should be used, one about 1.80" from the centre of the small end for steadying the joint made by the big oil pipe, and the middle one about 5.9 from the back end, and the remaining one about 3.2" from the big end. (3) It is considered that the oil pipe joint at the big end does not merit so much attention, as there is a fair thickness of metal for securing the pipe. The function of the two lower clips is therefore to carry the inertia load due to the weight of the pipe itself moving about. Would you please incorporate these two points in the rod and proceed. It will be unnecessary to send a further blueprint. E.{Mr Elliott - Chief Engineer} | ||