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).
New spring plate for the 24-EX model and a proposition for improving the cooling system.
| Identifier | ExFiles\Box 11\3\ 03-page237 | |
| Date | 20th July 1930 | |
| To: Hs.{Lord Ernest Hives - Chair} From G.W.H. Hôtel de France, Châteauroux, Indre. 20/7/30. We are sending you a drawing of the spring plate as fitted to the low inertia spring drive on 24-EX. It was cut away to get over the trouble of this plate taking charge of the spring load instead of the springs and causing stickiness of the load. We were rather of the opinion that it might not stand up to the job, therefore we ran it on this car to ascertain any weaknesses. We have examined it closely at 6,000 miles after being under excessive speeds, etc., and there is no sign of any failure. We therefore propose that it is brought into standard practice at once to overcome bus knock complaints, combined with pressure springs E.80241. These springs give the same poundage working load as the present standard, but are not stressed so much and are much better for maintaining an even slipping load due to wear of the fabrics. They were got out for me by the Drawing Office and ordered by "BY", therefore no trouble should be met in using them. The slipping poundage is 22 lbs. 17.5 rad. Re cooling system. I have been trying to get out a scheme whereby more cool air can be got under the bonnet, to do two things: first help the cooling system by getting the heat away from under the bonnet, secondly to cool down the scuttle. I herewith send you a sketch of a proposition which I believe would do a lot to improve the two conditions, that is to lessen the width of the radiator matrix by 1.500" at either side, leaving a slot whereby air can enter with no obstruction. I am of the opinion that the cooler air entering | ||