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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).
Weight implications of the body subframe on a Barker patent cabriolet and the correct fitting of floorboards.

Identifier  ExFiles\Box 4\9\  09-page185
Date  20th March 1926
  
To Hs.{Lord Ernest Hives - Chair} from DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork}
c. to R+ CJ.

X5840a

DA{Bernard Day - Chassis Design}/EVL/M20.3.26.

10-G-111 - NOW IN FRANCE.

X.5840a. X5830
X.5380 X5500

Referring to Hs{Lord Ernest Hives - Chair}4/LG17.3.26., item 7. Regarding the body subframe, the Barker patent cabriolet de ville is the heaviest type of 20 HP. body we sell, but is at the same time one of the most popular cabriolets.

We do not agree with your remark that because the subframe weighs approx. 100 lbs. that this means necessarily increase in the weight of the coachwork by that amount, because it enables us to save weight in the body. We suggest that before we are able to state that the subframe materially increases the weight of the car, we should weigh 10-G-111, and also a similar car without the subframe.

Regarding the floorboards, as far as the design goes there should be no difficulty in dealing with the front floor-boards. On previous subframe cars this complaint has been made and it has been found to be due to incorrect fitting. It should be realised that in no place must the boards fixed on the chassis contact with those on the body. This feature is often over-looked and the horizontal board is made to rest on both the chassis dash brackets and the subframe cross tube.

DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork}
  
  


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