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).
The accuracy and error measurements for Delco Remy Cams.
| Identifier | ExFiles\Box 168\3\ img234 | |
| Date | 24th April 1928 guessed | |
| R.M. Accuracy of Delco Remy Cams 6 Cylinder Type 15/16" between consecutive lobes. average of 4 1 9/16 all round error. 8 Cylinder Type 1 1/2 between consecutive lobes. average of 3 1 1/6 all round error. There was an all round error of 2 1/2° on one of the 6 cylinder type and an error of 1 1/2° between consecutive lobes on one of the 8 cylinder type. In fixing these limits the accuracy of the spindle must be taken into account as .001 inch error here will throw the timing out ~3°. The specification limits cover the Spindle and Cam, that is to say, the cam is tested in position. The Delco-Remy distributors supplied for production were to specification. Auto Lite (Buick) 0, 1/4, 2/4, 2 1/2L 1 1/2L 1/2E 1E. RM{William Robotham - Chief Engineer}/p | ||