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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).
Suggesting a cheaper method for making chassis floorboards using metal-faced wood called 'Plymax'.

Identifier  ExFiles\Box 14\4\  Scan091
Date  20th April 1931
  
HS.{Lord Ernest Hives - Chair} FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork}
DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork}1/M20.4.31.
X7500

C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} X.7500
C. to E.{Mr Elliott - Chief Engineer} HY.{Tom Haldenby - Plant Engineer} RHC.{R. H. Coverley - Production Engineer} X.3500
re. FLOORBOARDS.

In a previous memo, we have suggested to you that we might find a cheaper way of making the chassis floorboards than by framing.

We have one suggestion we would like you to make a preliminary trial of on any experimental car. It is the use of a simple board approx. .750 thick of metal faced wood, such as 'Plymax'. We might try both single and double aluminium covered birchwood. The weight will be about the same as a teak board.

For single faced boards the edges are cut thus:
cut out.
and the metal bent over aluminium.

For the double faced boards one can either screw on an angle or preferably cut thus:
and bend in thus:

We suggest that single covered board would be sufficient. The ends will still be left long for the coachbuilder to cut to suit the body contour.

The pedal gap plates and possibly the heel, could be dispensed with.

We would be glad if you would make up a set of boards on these lines for a car you are using.

'Plymax' is made by Venestra Ltd.

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


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