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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).
Solutions for overheating interiors in Phantom cars, focusing on insulation and collaboration with coachbuilders.

Identifier  ExFiles\Box 74\3\  scan0176
Date  7th September 1926
  
PN{Mr Northey}1/DN7.9.26.

TO B.J. c. to Sg.{Arthur F. Sidgreaves - MD}

FROM P.N.

Re Over-Heating in interior of Phantom cars.

We would like R.{Sir Henry Royce} to realise fully the considerable amount of trouble we have at times in satisfying people with our cars because of the car's tendency to become too hot. I am quite aware of the various methods which have been proposed to lighten this situation and undoubtedly we, as chassis manufacturers, appear to rely mostly upon any preventive measures which may be taken by the coachbuilders to avoid successfully an undue rise of temperature in all closed cars.

It is, of course, a matter for argument as to whose onus it may be to provide a successful remedy, either the chassis builders or coachbuilders, but undoubtedly I think we should each contribute as much as we are able to bring about the desired result.

We are expecting and instructing the coach-builders to line the underneath of the floorboards with asbestos, to make these parts a specially good fit (which in any case is only a temporary condition), to provide sundry mats of lin-rubber or other material of carpet, all with a view to preventing the conduction of heat through the boards and the conveyance of heat into the car by providing a reasonable seal, which, of course, is more effective.

I feel we ought to go a step further; it would have been nice if we had been in a position to insulate thoroughly our exhaust fittings where they come in juxtaposition to the coachwork, by means of wrapping with asbestos in some form or other, but it has been explained by Hs.{Lord Ernest Hives - Chair} that they do not wish to reduce the cooling of these parts any more than at present in view of the difficulty existing in respect of silencing the exhaust.

The line which I feel the Experimental Dept. might consider is the provision of a suitable fender or baffle which could be fixed between the heated exhaust parts and the

P.T.O.
  
  


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