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).
10,000-mile test of a standard distributor and platinum points, including effects of ventilation on corrosion.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan305 | |
| Date | 4th September 1925 | |
| EFC. WB.{Mr Brazier/Mr Bell}40. 4.9.25. 10,000 MILE TEST OF STANDARD DISTRIBUTOR AND PLATINUM POINTS WITH COIL GP1 (REDUCED GAUGE OF PRIMARY). The condition of the platinum points after this run was considered to be good. The usual pip which forms on the lever point was much smaller and the points did not require any attention throughout the test. Apart from the raised pip on the lever point and the corresponding cavity on the screw, the wear has been negligible. The points are handed to you herewith for inspection. Effect of ventilation of dist.head on the condition of metal parts. This was determined by running 1/3 of the 10,000 miles unventilated, 1/3 ventilated, and the remainder unventilated again. By this means a comparison could be obtained. Unventilated, corrosion of the exposed metal parts, particularly the cam and contact screw was noticeable, but with the head ventilated there was observed a marked decrease in the rate and amount of this corrosion. Initially vaselining the exposed metal parts considerably protected them from extensive corrosion. HEW. | ||