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).
Report detailing test methods and results for radiator and bonnet movement.
| Identifier | ExFiles\Box 119\2\ scan0344 | |
| Date | 6th June 1930 guessed | |
| II This method has distinct advantages over a car on the road. Namely:- 1. It dispenses with the difficulties to maintain a similar degree of frame flexing, by hitting evenly spaced pot-holes of similar depth. 2. Balancing on the front wings of a car at speeds between 60 mph and 70 mph. is not the most efficient way to examine the parts that it is possible to examine in this position. 3. On the bumper it is easy to ascertain the effect of an increase or decrease in bonnet clearances. An increase is effected by unfastening the bonnet at the point in question, and lifting the bonnet clear from its limit. a decrease by inserting an aluminium packing at the point in question. Test I. The standard radiator control used on N.2 series (Fig I). The diabolo rubbers needing 365 lbs to compress .150" give practically similar results as a solid radiator. The bonnet and radiator movement was very great and in consequence very bad bonnet knocks. Test II No radiator control. That is the cups and rubbers removed as fig II. The vertical radiator movement is very good, in fact through all our tests we have had nothing to equal it. The horizontal or sideway movement relative | ||