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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).
Technical discussion on proposed modifications for the radiator, central lubrication, and shock absorbers.

Identifier  ExFiles\Box 27\1\  Scan294
Date  15th October 1929 guessed
  
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We consider the present scheme of luggage grid and wheel
at the rear should be simplified.

(11) Radiator Filter.
As regards the trouble we are having with radiators
being stopped up, we are not certain yet that the modifications
which have been made and are contemplated, will completely
overcome this trouble.

We suggest therefore, it would be better to have a
filter which could be cleaned instead of allowing the radiator
matrix to act as a filter.

(12) Central lubrication.
We consider that we should still be endeavouring to
lubricate the whole car from the central tank. We have no
reason to believe that there is any very great difficulty in
doing this. We ran 10,000 miles on 12-EX with such a scheme.
Numerous American cars including R.R. Springfield, are using
this without any trouble.

(13) Modified shape of radiator and filter.
This modification will entail considerable body modifications.
We should like Da{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork} to say whether it is possible to alter
one of our existing bodies or whether it will be necessary to
have a new body built to suit this modification. As regards
18-EX car, we shall fit automatic shutters to the existing type
of radiator.

(14) Shock absorbers.
We are still receiving a number of complaints from
customers as regards noisy shock absorbers. It has been proved
that a small amount of slack in the joints of the shock absorber
  
  


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