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).
Radiator obstruction, comparing aluminium to cast iron, and detailing a cleaning procedure.
| Identifier | ExFiles\Box 27a\3\ Scan041 | |
| Date | 13th August 1939 guessed | |
| -2- that a similar obstruction of the top tubes takes place in a longer period of time; so that these can also be treated with advantage to reduce over-heating. If clearing the radiators in of aluminium head cars in this manner is made a routine job when they come into depots, complaints ought not to occur. Aluminium, however, is definately more susceptible to corrosion with the various types of tap water than Cast Iron, and this might be explained to customers who appear to have repeated trouble with their radiators. We have no evidence that F.2.B series radiators can become choked in under 20,000 miles running provided that they are filled and topped up with clean soft water. In order to ensure that when a radiator is re-fitd to a customers car it is 100%, a simple test rig can be employed. We attach a sketch shewing a standard petrol tank arranged as a reservior. As the water runs out of the tank it should be replaced by the main supply. Summarising the radiators that we have treated here. The majority of them can be freed from obstruction by the "Kleenwell" solution, provided the mixture is inserted in the bottom of the radiator and the radiator allowed to stand over night in an inverted position, afterwards being flushed out still inverted. The great point,is to prevent the obstruction in the top row of tubes being washed into the interior of the matrix | ||